Update: Data Security Incident FAQ 2024 July 3: English | Español 
Notice of Data Security Incident: English | Español  

Measles Vaccine Information: 
If your child has received all of the recommended vaccines, you do not need to worry. The measles vaccine is a two dose series. The first dose is given at 12-15 months of age, and the second dose is given between 4 to 6 years of age. 

If you are uncertain whether your child is current with their measles vaccinations, please check your child’s immunization records for the entry labeled MMR (Measles, Mumps, and Rubella).

Click here for measles FAQs: English | Español 

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Executive Leadership

Presenting our Executive Leaders

Ernesto Gómez, PhD. President & CEO

Ernesto Gómez, PhD.
President & CEO

Graciela Alarcon

Graciela Alarcon-Cigarroa, JD, LLM
General Counsel

Norma G. Parra, MD Senior Vice President & Chief Medical Officer

Norma G. Parra, MD
Senior Vice President & Chief Medical Officer

Don Macaulay

Don Macaulay, MBA
Senior Vice President & Chief Operations Officer

Lawrence Charles “Chuck” Walzel, CPA Senior Vice President & Chief Financial Officer

Lawrence Charles “Chuck” Walzel, CPA
Senior Vice President & Chief Financial Officer

Anna Serrano

Anna Serrano, DrPH, MBA
Senior Vice President & Chief Population Health Officer

Ana Maria Garza Cortez, MA Senior Vice President & Chief Development Officer

Ana Maria Garza Cortez, MA Senior Vice President & Chief Development Officer

Carlos D. Gómez, MHA Vice President - Regional Operations

Carlos D. Gómez, MHA
Vice President – Regional Operations

Margarita Seaman, MHA, DDS Vice President – Strategic Operations

Margarita Seaman, MHA, DDS Vice President – Strategic Operations

Raymond Wei

Raymond Wei, MS, FACHE Vice President & Chief Information Officer

David K. Amason, Associate Vice President - Assistant Chief Information Officer

David K. Amason, Associate Vice President – Assistant Chief Information Officer

Angelica Padilla, PHR, SHRM-CP Associate Vice President - Human Resources

Angelica Padilla, PHR, SHRM-CP Associate Vice President – Human Resources

Aysun Alagoz, MD Associate Chief Medical Officer

Aysun Alagoz, MD
Associate Chief Medical Officer

Veronica Betancur, MD Associate Chief Medical Officer

Veronica Betancur, MD
Associate Chief Medical Officer

Yuly Carreras, MD Associate Chief Medical Officer

Yuly Carreras, MD Associate Chief Medical Officer

Clevert Tseng, MD Associate Chief Medical Officer

Clevert Tseng, MD
Associate Chief Medical Officer

Johana Miranda Rangel, R.Ph

Johana Miranda Rangel, R.Ph

Position:  Pharmacist
Practice: Pharmacist
Native: Monterrey, Nuevo Leon, Mexico
Education: UIW FEIK School of Pharmacy, San Antonio, Texas
Certification: Texas State Board of Pharmacy
Language: English & Spanish
Emily Jetter, R.Ph.

Emily Jetter, R.Ph.

Position:  Pharmacist
Practice: Pharmacist
Native: San Antonio, Texas
Education: University of Texas, Austin, Texas
Language: English & Spanish
Alvino Arredondo, Jr, R.Ph.

Alvino Arredondo, Jr, R.Ph.

Position:  Pharmacist
Practice: Pharmacist
Native: San Antonio, Texas
Education: University of Houston College of Pharmacy, Houston, Texas Our Lady of the Lake University, San Antonio, Texas Support
Language: English & Spanish
M. Margot Cevallos, R.Ph.

M. Margot Cevallos, R.Ph.

Title:  Behavioral Health Provider
Position:  Behavioral Health Provider
Practice: Counselor
Native: Laredo, Texas
Education: University of Texas at San Antonio, San Antonio, Texas
Language: English & Spanish
Jennifer Velasquez, LCSW

Jennifer Velasquez, LCSW

Position:  Behavioral Health Provider
Practice: Counselor
Native: Laredo, Texas
Location: CentroMed South Park Medical
Education: University of Texas at San Antonio, San Antonio, Texas
Certification: Licensed Clinical Social Worker
Language: English & Spanish
Cynthia Mazuca, LCSW

Cynthia Mazuca, LCSW

Position:  Behavioral Health Provider
Practice: Counselor
Native: San Antonio, Texas
Location: CentroMed Palo Alto Clinic
Education: Our Lady of the Lake University, San Antonio, Texas
Certification: Licensed Clinical Social Worker
Language: English & Spanish
Lisa Huizar

Lisa Huizar, LCSW

Position:  Behavioral Health Provider
Practice: Counselor
Native: El Paso, Texas
Location: CentroMed City Center
Education: University of Michigan at Ann Arbor, Michigan
Internship: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Licensed Clinical Social Worker
Language: English & Spanish
Paulina Garza, LCSW

Paulina Garza, LCSW

Position:  Behavioral Health Provider
Practice: Counselor
Native: Laredo, Texas
Location: CentroMed Berto Guerra Jr. Clinic
Education: The University of Texas Rio Grande Valley, Edinburg, Texas
Certification: Texas Behavioral Health Executive Council
Language: English & Spanish
Vanessa Delgado-Ramirez, LCSW

Vanessa Delgado-Ramirez, LCSW

Position:  Behavioral Health Provider
Practice: Social Worker
Native: San Antonio, Texas
Location: CentroMed Berto Guerra Jr. Clinic
Education: Our Lady of the Lake University, San Antonio, Texas
Certification: Licensed Clinical Social Worker
Language: English & Spanish
Rosa Luinda Combs, LCSW

Rosa Luinda Combs, LCSW

Position:  Behavioral Health Provider
Practice: Counselor
Native: Brownsville, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: Our Lady of the Lake University, San Antonio, Texas
Certification: Licensed Clinical Social Worker
Language: English & Spanish
Adriana Uribe, DPM

Adriana Uribe, DPM

Position:  Physician
Practice: Podiatry
Native: Chicago, Illinois
Location: CentroMed South Park Medical
Education: William M. School College of Podiatric Medicine, Chicago, Illinois University of Illinois at Chicago, Chicago, Illinois
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Language: English & Spanish
Michael D. Stevens, OD, FAAO

Michael D. Stevens, OD, FAAO

Position:  Optometrist
Practice: Optometry
Native: Millsboro, Delaware
Location: CentroMed Palo Alto Clinic
Education: Pennsylvania College of Optomerty, Elkins Park, Pennsylvania
Language: English
Asael Rodriguez, RDH

Asael Rodriguez, RDH

Position:  Dental Hygienist
Practice: Dental Hygienist
Native: San Antonio, Texas
Location: CentroMed Southside Medical
CentroMed South Park Dental Clinic
Education: UT Health of San Antonio, San Antonio, Texas
Certification: Registered Dental Hygienist
Language: English & Spanish
Anita Pesina DH

Anita Parra Pesina, RDH

Position:  Dental Hygienist
Practice: Dental Hygienist
Native: Hondo, Texas
Location: CentroMed South Park Dental Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Registered Dental Hygienist
Language: English & Spanish
Matthew Ortiz, RDH

Matthew Ortiz, RDH

Position:  Dental Hygienist
Practice: Dental Hygienist
Native: Eagle Pass, Texas
Location: CentroMed Southside Medical
CentroMed Palo Alto Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Registered Dental Hygienist
Language: English & Spanish
Leticia Montanez, RDH

Leticia Montanez, RDH

Position:  Dental Hygienist
Practice: Dental Hygienist
Native: Brownsville, Texas
Location: CentroMed Southside Medical
CentroMed Berto Guerra Jr. Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Registered Dental Hygienist
Language: English & Spanish
Halya Burns, RDH

Halya Burns, RDH

Position:  Dental Hygienist
Practice: Dental Hygienist
Native: San Antonio, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Registered Dental Hygienist
Language: English & Spanish
Mansour Zarei, DDS

Mansour Zarei, DDS

Position:  Dental Provider
Practice: General Dentist
Native: San Antonio, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: University of Texas Health Science Center San Antonio, San Antonio, Texas
Language: English & Farsi
Maria E. Villarreal, DDS

Maria E. Villarreal, DDS

Position:  Dental Provider
Practice: General Dentist
Native: San Angelo, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: Southern Illinois University, Carbondale, Illinois University of Detroit Mercy, Detroit, Michigan
Certification: Northeast Regional Board Certified Texas State Board Certified
Language: English
Starr Mayen, DDSDelia Silvas, FNP-BC

Starr Mayen, DDS

Position:  Dental Provider
Practice: General Dentist
Native: Brownsville, Texas
Location: CentroMed Southside Medical
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Nitrous Oxide, Level 1 Conscious Sedation
Language: English & Spanish
Angeline Luna, DDS

Angeline Luna, DDS

Position:  Dental Provider
Practice: General Dentist
Native: San Angelo, TX
Location: CentroMed South Park Dental Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, TX
Certification: Nitrous Oxide, Level 1 Sedation
Language: English & Spanish
Anwar Khan, DDS

Anwar Khan, DDS

Position:  Dental Provider
Practice: General Dentist
Native: Vero Beach, Florida
Location: CentroMed Palo Alto Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Nitrous Oxide
Language: English, Pashto
Gabriel Garza, DDS

Gabriel Garza, DDS

Position:  Dental Provider
Practice: General Dentist
Native: Roma, Texas
Location: CentroMed Southside Medical
CentroMed Maria Castro Flores Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: General Dentist
Language: English & Spanish
Lourdes Comas, DMD

Lourdes Comas, DMD

Position:  Dental Provider
Practice: General Dentist
Native: Ponce, Puerto Rico
Location: CentroMed South Park Dental Clinic
Education: University of Puerto Rico Dental School, San Juan Puerto Rico
Language: English & Spanish
Heather Blackmond, DDS

Heather Blackmond, DDS

Position:  Dental Provider
Practice: General Dentist
Native: El Paso, Texas
Location: CentroMed Berto Guerra Jr. Clinic
Education: Arizona School of Dentistry & Oral Health, Mesa, Arizona
Certification: Nitrous Oxide-Pending
Language: English
Pabitra Banskota, DDS

Pabitra Banskota, DDS

Position:  Dental Provider
Practice: General Dentist
Native: Kathmandu, Nepal
Location: CentroMed Berto Guerra Jr. Clinic
Education: University of Texas Health Science Center at San Antonio Dental School, San Antonio, Texas
Certification: Nitrous Oxide; Minimal Sedation
Language: English, Nepali, and Hindi
Eduardo Acosta, DDS

Eduardo Acosta

Position:  Dental Provider
Practice: General Dentist
Native: Dodge City, Kansas
Location: CentroMed South Park Dental Clinic
Education: University of Colorado School of Dental Medicine, Aurora, Colorado
Internship: Medical College
Language: English & Spanish
Vicente Canales, DDS Chief Dental Officers

Vicente Canales, DDS

Title:  Chief Dental Officers
Position:  Dental Provider
Practice: General Dentist
Native: San Antonio, Texas
Location: CentroMed Southside Medical
Education: University of Texas at San Antonio, San Antonio, Texas
Residency: University of Texas at San Antonio, San Antonio, Texas University of Texas Health Science Center at San Antonio Dental School, San Antonio, Texas
Language: English & Spanish
Monika Thornton, MSN, APRN, FNP-C

Monika Thornton, MSN, APRN, FNP-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: San Antonio, Texas
Location: CentroMed Thousand Oaks Clinic
Education: University of Texas Medical Branch, Galveston, Texas
Certification: American Academy of Nurse Practitioners
Language: English
Delia Silvas, FNP-BC

Delia Silvas, FNP-BC

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Crystal City, Texas
Location: CentroMed Palo Alto Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Family Nurse Practitioner
Language: English & Spanish
Amanda Rodriguez

Amanda Rodriguez, PA-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: New Braunfels, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: National Commission on Certification of Physician Assistants
Language: English & Spanish
Amanda Miller, MPH, MPAS, PA-C, AAHIVS

Amanda Miller, MPH, MPAS, PA-C, AAHIVS

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Rochester Hills, Michigan
Location: CentroMed City Center
Education: Western Michigan University, Kalamazoo, Michigan University of Texas Houston, Houston , Texas, University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Physician Assistant from National Commission on Certification of Physician Assistants
Language: English
Robert Meyer, MSN, APRN, FNPC

Robert Meyer, MSN, APRN, FNPC

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Gorr, Michigan
Location: CentroMed Family First Clinic
Certification: American Academy of Nurse Practitioners
Language: English
Angelica Lopez

Angelica Lopez, FNP-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Dumas, Texas
Location: CentroMed Palo Alto Clinic
Education: Walden University, Minneapolis, Minnesota
Certification: American Academy of Nurse Practitioners
Language: English & Spanish
Gencie L. Leonard, MSN, APRN, FNP-C

Gencie L. Leonard, MSN, APRN, FNP-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: San Antonio, Texas
Location: CentroMed Sarah E. Davidson Clinic
Education: Western Governors University, Salt Lake City, Utah
Certification: American Association of Nurse Practitioners (AANP)
Language: English
Holly Lacy, FNP-C

Holly Lacy, FNP-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Minonk, Illinois
Location: CentroMed Noemi Galvan Eling Clinic
Education: Texas Tech Health Science Center, Lubbock, Texas
Certification: American Academy of Nurse Practitioners
Language: English, Pashto
Maggie R. Hoover, PA-C

Maggie R. Hoover, PA-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Helena, Arkansas
Location: CentroMed Sarah E. Davidson Clinic
Education: Mountain State University, Beckley, West Virginia American Academy of Nurse Practitioner
Certification: National Commission on Certification of Physician Assistant
Language: English
Luis F. Hernandez, PA

Luis F. Hernandez, PA

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Eagle Pass, Texas
Location: CentroMed Palo Alto Clinic
Education: UT Health San Antonio, San Antonio, Texas
Certification: Physical Assistant
Language: English & Spanish
Victoria Gutierrez PA

Victoria Gutierrez, MPH, MPAS, PA-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: San Antonio, Texas
Location: CentroMed Sarah E. Davidson Clinic
Education: Texas A&M University School of Public Health, College Station, Texas University of North Texas Health Science Center at Fort Worth, Fort Worth, Texas
Certification: National Committee on Certification of Physician Assistants; Master Physician Assistant Studies
Language: English
Martha G. Garza, FNP-BC

Martha G. Garza, FNP-BC

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Eagle Pass, Texas
Location: CentroMed Southside Medical
Education: University of Texas at Arlington, Arlington, Texas
Certification: Family Nurse Practitioner
Language: English & Spanish
April Gallejos, APRN, FNP-C

April Gallejos, APRN, FNP-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Laredo, Texas
Location: CentroMed Family Medicine
Education: University of Texas at Arlington, Arlington, Texas
Certification: American Academy of Nurse Practitioners
Language: English & Spanish
Krystle De La Rosa, FNP-BC

Krystle De La Rosa, FNP-BC

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Boston, Massachusetts
Location: CentroMed South Park Medical
Education: Northeastern University, Boston Massachusetts; Regis College, Boston, Massachusetts
Certification: American Academy of Nurse Practitioners
Language: English & Spanish
DaCosta Web

Adriana DaCosta, PA-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Corpus Christi, Texas
Location: CentroMed Berto Guerra Jr. Clinic
Education: Duke University, Durham, North Carolina
Certification: National Commission on Certification of Physician Assistants
Language: English & Spanish
Nicole Colunga, FNP-C

Nicole Colunga, FNP-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: San Antonio, Texas
Location: CentroMed Berto Guerra Jr. Clinic
Education: Texas A&M University, Corpus Christi, Texas
Certification: The American Academy of Nurse Practitioners
Language: English
Herman Castillo, DNP, FNP-C

Herman Castillo, DNP, FNP-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Eagle Pass, Texas
Location: CentroMed South Park Medical
Education: Rocky Mountain University of Health Professions, Provo, Utah
Certification: Texas Board of Nursing
Language: English & Spanish
Carolina P. Calvo, MPAS, PA-C

Carolina P. Calvo, MPAS, PA-C

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: Forth Worth, Texas
Location: CentroMed South Park Medical
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: National Committee on Certification of Physician Assistants; Master Physician Assistant Studies
Language: English & Spanish
Tiffany Bruce, FNP-BC

Tiffany Bruce, FNP-BC

Position:  Advanced Practice Clinician
Practice: Family Medicine
Native: San Antonio, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: Walden University, Minneapolis, Minnesota
Language: English
Sylvia Allen, FNP-C

Sylvia Allen, FNP-C

Position:  Physician
Practice: Family Medicine
Native: Del Rio, Texas
Location: CentroMed Maria Castro Flores Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Family Nurse Practitioner
Language: English & Spanish
Daniella Ramirez

Daniella Afnani, PA-C

Position:  Physician
Practice: Family Medicine
Native: Brownsville, Texas
Location: CentroMed Southside Medical
Education: University of North Health Science Center, Forth Worth, Texas
Certification: National Commission on Certification of Physician Assistant
Language: English & Spanish
Ernesto Parra

Ernesto Parra, MD, MPH

Position:  Physician
Practice: Family Medicine
Native: Los Angeles, California
Location: CentroMed Palo Alto Clinic
Education: Harvard Medical School, Boston, Massachusetts University of Southern California Los Angeles, California, University of California in Los Angeles School of Public Health, Los Angeles, California
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: American Academy of Family Practice
Language: English & Spanish
Nonyerem N. Osuji, MD

Nonyerem N. Osuji, MD

Position:  Physician
Practice: Family Medicine
Native: Houston, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: University of Texas, Austin, Texas University of Texas Medical Branch, Galveston, Texas
Residency: University of South Alabama, Mobile, Alabama Family Practice
Certification: American Board of Family Medicine
Language: English & French
Cielo Manriquez, MD, FACP

Cielo Manriquez, MD, FACP

Position:  Internist
Practice: Internal/Family Medicine
Native: El Paso, Texas
Location: CentroMed Thousand Oaks Clinic
Education: The University of Texas Medical Branch at Galveston, Galveston, Texas
Residency: University of New Mexico Health Science Center, Albuquerque, New Mexico
Language: English and Spanish
Spencer Lewis, MD

Spencer Lewis, MD

Position:  Physician
Practice: Family Medicine
Native: Bakersfield, California
Location: CentroMed Southside Medical
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: American Board of Family Medicine
Rafael Hernandez Martinez, MD

Rafael Hernandez Martinez, MD

Position:  Physician
Practice: Family Medicine
Native: Seguin, Texas
Location: CentroMed City Center
Education: University of Texas, Austin, Texas Baylor College of Medicine, Houston, Texas
Internship: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: American Board of Family Medicine
Language: English & Spanish
Hanaa Girgis, MD

Hanaa Girgis, MD

Position:  Physician
Practice: Family Medicine
Native: Egypt
Location: CentroMed Family First Clinic
Education: University of Toledo, Toledo, Ohio
Residency: Christus Santa Rosa Family Medicine, San Antonio, Texas
Certification: American Board of Family Medicine
Language: English
Veronica Betancur, MD Associate Chief Medical Officer

Veronica Betancur, MD

Title: Associate Chief Medical Officer
Position:  Physician
Practice: Family Medicine
Native: San Antonio, Texas
Location: CentroMed Southside Medical
Education: Brandeis University, Waltham, Massachusetts; RFUMS-The Chicago Medical School, Chicago, Illinois
Residency: Christus Santa Rosa Family Medicine, San Antonio, Texas
Certification: American Board of Family Medicine
Language: English and Spanish
Aysun Alagoz, MD Associate Chief Medical Officer

Aysun Alagoz, MD

Title: Associate Chief Medical Officer
Position:  Physician
Practice: Family Medicine
Native: Irvine, California
Location: CentroMed South Park Medical
Education: University of California, Irvine, California
Residency: University of California, Davis, California
Language: English and some Spanish
Norma G. Parra, MD Senior Vice President & Chief Medical Officer

Norma G. Parra, MD, MPH

Title: Senior Vice President & Chief Medical Officer
Position:  Physician
Practice: Family Medicine
Native: Corpus Christi, Texas
Location: CentroMed South Park Medical
Education: Yale University New Haven, Connecticut Texas Tech Health Science Center Lubbock, Texas
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: American Board of Family Medicine
Language: English & Spanish
Mayra G. Peña, WHNP-BC

Mayra G. Peña, WHNP-BC

Position:  Advanced Practice Clinician
Practice: Women’s Health
Native: San Antonio, Texas
Location: CentroMed Southside Medical
Education: University of Cincinnati, Cincinnati, Ohio
Certification: Women’s Health Nurse Practitioner
Language: English & Spanish
Cristine Hernandez, FNP-C

Cristine Hernandez, FNP-C

Position:  Advanced Practice Clinician
Practice: Women’s Health
Native: San Antonio, Texas
Location:

CentroMed South Park Medical
CentroMed Southside Medical
CentroMed Noemi Galvan Eling Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Residency: Tulane University, New Orleans, Louisiana
Certification: American Academy of Nurse Practitioners
Language: English & Spanish
Scheel Nayar, DO, FACOG

Scheel Nayar, DO, FACOG

Position:  Physician
Practice: Women’s Health
Native: San Antonio, Texas
Location: CentroMed Women’s Health Care
Education: Des Moines University, Des Moines, Iowa
Residency: Tulane University, New Orleans, Louisiana
Certification: American Board of Obstetrics and Gynecology
Language: English
Isamarie Lora-Alcantara, MD

Isamarie Lora-Alcantara, MD

Position:  Physician
Practice: Women’s Health
Native: Santo Domingo, Dominican Republic
Location: CentroMed Noemi Galvan Eling Clinic
Education: Instituto Tecnológico de Santo Domingo, Santo Domingo, Dominican Republic
Residency: Lincoln Medical & Mental Health Center, Bronx, New York
Certification: Board Certified in Obstetrics and Gynecology
Language: English and Spanish
Samantha Gonzalez Ramos, MD

Samantha Gonzalez Ramos, MD

Position:  Physician
Practice: Women’s Health
Native: Caracas, Venezuela
Location: CentroMed South Park Medical
Education: Universidad Central de Venezuela, Capital, Venezuela
Residency: BronxCare Health System, The Bronx, New York
Language: English and Spanish
Daniel A. Escobar-Jimenez, MD

Daniel A. Escobar-Jimenez, MD

Position:  Physician
Practice: Women’s Health
Native: Cali, Colombia
Location: CentroMed South Park Medical
Education: Universidad del Valle, Cali, Colombia
Residency: BronxCare Hospital System, Bronx, New York
Language: English, Spanish and German
Ana Maria Escobar-Botero, MD

Ana Maria Escobar-Botero, MD

Position:  Physician
Practice: Women’s Health
Native: Cali, Colombia
Location: CentroMed Southside Medical
Education: Universidad del Valle, Cali, Colombia
Residency: Northwell Health Staten Island University Hospital, Staten Island, New York
Language: English & Spanish
Ayisat Enifeni, MD

Ayisat Enifeni, MD

Position:  Physician
Practice: Women’s Health
Location: CentroMed Noemi Galvan Eling Clinic
Education: Ponce School of Medicine, Ponce, Puetro Rico University of Purerto Rico Rio Piedras Campus, San Juan Puetro Rico University of Minnesota, Minneapolis, Minnesota
Residency: University of Puerto Rico Medical Science Campus, San Juan, Puerto Rico
Language: English & Yoruba
Herbert Guzman, MD, FACOG

Herbert Guzman, MD, FACOG

Title: Director of OB
Position:  Physician
Practice: Women’s Health
Location: CentroMed Southside Medical
Education: Ponce School of Medicine, Ponce, Puetro Rico University of Purerto Rico Rio Piedras Campus, San Juan Puetro Rico University of Minnesota, Minneapolis, Minnesota
Residency: University of Puerto Rico Medical Science Campus, San Juan, Puerto Rico
Certification: Board Certified in Obstetrics and Gynecology
Language: English & Spanish
Gina Padron

Gina Padron, FNP-C

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: El Paso, Texas
Location: CentroMed SA Pediatrics Stone Oak
Education: Walden University, Minneapolis, Minnesota
Certification: The American Academy of Nurse Practitioners
Language: English & Spanish
Sheila Msengi, FNP

Sheila Msengi, FNP

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: Tanzania, East Africa
Location: CentroMed SA Pediatrics Southeast
Education: United States University, San Diego, California
Certification: The American Academy of Nurse Practitioner; Advanced Practice Registered Nurse
Language: English & Swahili
Helen K. Morrison, CPNP-PC

Helen K. Morrison, CPNP-PC

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: Cibolo, Texas
Location: CentroMed SA Pediatrics Cibolo
Education: Texas A&M University, College Station, Texas University of Alabama at Birmingham, Birmingham, Alabama
Certification: Certified Pediatric Nurse Practitioner – Primary Care
Language: English
Ashley J. Lopez, C-PNP

Ashley J. Lopez, C-PNP

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed SA Pediatrics Tri-County Crossing Phase II
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Pediatric Nurse Practitioner
Language: English & Spanish
Michelle Lewis, RN, MSN, C-PNP-PC

Michelle Lewis, RN, MSN, C-PNP-PC

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: Los Angeles, California
Location: CentroMed SA Pediatrics Tri-County Crossing Phase II
Education: Texas Tech University, Lubbock, Texas University of Texas Health Science Center at Houston, Houston, Texas
Certification: Pediatric Nurse Practitioner
Language: English & some Spanish
Brittany Lewis, FNP-BC

Brittany Lewis, FNP-BC

 

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed SA Pediatrics Stone Oak
Certification: Board Certified Family Nurse Practitioner
Jennifer B. Hessock, CPNP-PC

Jennifer B. Hessock, CPNP-PC

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: Chalmette, Louisiana
Location: CentroMed SA Pediatrics Southwest
Education: University of Florida, Gainesville, Florida
Certification: Advanced Practice Registered Nurse
Language: English
Mary Hernandez, MSN, APRN, CPNP-PC

Mary Hernandez, MSN, APRN, CPNP-PC

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed SA Pediatrics Southeast
Education: University of Texas at El Paso, El Paso, Texas
Certification: Certified Pediatric Nurse Practitioner – Primary Care
Language: English
Melissa Garcia, C-PNP

Melissa Garcia, C-PNP

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed Palo Alto Clinic
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Pediatric Nurse Practitioner
Language: English & Spanish
Phelicia Ford-Ross, MSN, ARPN, FNP-C

Phelicia Ford-Ross, MSN, ARPN, FNP-C

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed SA Pediatrics Cibolo
Education: University of Texas at Arlington, Arlington, Texas
Certification: The American Academy of Nurse Practitioner; Advanced Practice Registered Nurse
Language: English
Jennifer Y. Dimas, APRN, CPNP-PC

Jennifer Y. Dimas, APRN, CPNP-PC

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed SA Pediatrics Southwest
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: Certified Pediatric Nurse Practitioner – Primary Care; Advanced Practice Registered Nurse
Language: English & some Spanish
Stephanie Aviles, MSN, APRN, CPNP-PC

Stephanie Aviles, MSN, APRN, CPNP-PC

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed Berto Guerra Jr. Clinic
Education: University of Texas at El Paso, El Paso, Texas
Certification: Pediatric Nurse Practitioner – Primary Care
Language: English
Celia Alviso, RN, C-PNP-PC

Celia Alviso, RN, C-PNP-PC

Position:  Advanced Practice Clinician
Practice: Pediatrics
Native: Pampa, Texas
Location: CentroMed SA Pediatrics Southwest
Education: University of Texas Health Science Center, San Antonio, Texas
Certification: Pediatric Nurse Practitioner
Language: English & Spanish
Pedro Zavala, MD

Pedro Zavala, MD

Position:  Physician
Practice: Pediatrics
Native: Brownsville, Texas
Location: CentroMed Thousand Oaks Clinic
Education: University of Austin, Austin, Texas Texas Tech Paul L. Foster School of Medicine, El Paso, Texas
Certification: American Board of Pediatrics
Language: English & Spanish
Daniel “Dr. Dan” Vijjeswarapu, MD, FAAP

Daniel “Dr. Dan” Vijjeswarapu, MD, FAAP

Position:  Physician
Practice: Pediatrics
Native: Guntur, India
Location: CentroMed Southside Medical
Education: Rangaraya Medical School, Kakinada, India
Residency: McGovern Medical School at UT Health, Houston, Texas; UT Health San Antonio, San Antonio, Texas
Certification: American Board of Pediatrics
Language: English and Telugu
Denise Uchoa, MD

Denise Uchoa, MD

Position:  Physician
Practice: Pediatrics
Native: Brazil
Location: CentroMed SA Pediatrics Stone Oak
Education: UNIFESO University, Rio de Janeiro, Brazil
Certification: Texas Tech University at El Paso, El Paso, Texas
Language: English, Spanish, Portuguese, & Italian
Clevert Tseng, MD Associate Chief Medical Officer

Clevert Tseng, MD

Title: Associate Chief Medical Officer
Position:  Physician
Practice: Pediatrics
Native: Huánuco, Peru
Location: CentroMed SA Pediatrics Santa Rosa Pavilion
Education: Universidad Peruana Cayetano, Heredia, Perú
Residency: Doctors Hospital of Jackson, Jackson, City, Michigan
Certification: American Board of Pediatrics 
Language: English & Spanish
Daniel Trevino, MD

Daniel Trevino, MD

Position:  Physician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed SA Pediatrics Stone Oak
Education: Wright State University, Dayton, Ohio
Residency: Texas Tech University, Lubbock, Texas
Language: English & Spanish
Melissa Rodriguez, MD

Melissa Rodriguez, MD

Position:  Physician
Practice: Pediatrics
Native: Edinburg, Texas
Location: CentroMed Palo Alto Clinic
Education: The University of Texas at Austin, Austin, Texas
Residency: Driscoll Children’s Hospital Pediatric Residency, Corpus Christi, Texas
Certification: American Board of Pediatrics
Language: English & Spanish
Luis Rodriguez, MD

Luis Rodriguez, MD

Position:  Physician
Practice: Pediatrics
Native: Blue Island, Illinois
Location: CentroMed SA Pediatrics Promesa Building
Education: Facultad de Medicina Universidad Autónoma de Nuevo León, Monterrey, México
Residency: The University of Texas MD Anderson Cancer Center, Houston, Texas
Certification: American Board of Pediatrics
Language: English & Spanish
Juliana L. Robles, MD

Juliana L. Robles, MD

Position:  Physician
Practice: Pediatrics
Native: Eagle Pass, Texas
Location: CentroMed Berto Guerra Jr. Clinic
Education: Trinity University, San Antonio, Texas, Wake Forest School of Medicine, Winston-Salem, North Carolina
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: American Board of Pediatrics Certified
Language: English & Spanish
Hilda M. Rivera-Santiago, MD

Hilda M. Rivera-Santiago, MD

Position:  Physician
Practice: Pediatrics
Native: San Juan, Puerto Rico
Location: CentroMed Berto Guerra Jr. Clinic
Education: George Washington University, Washington, DC
Residency: University Pediatric Hospital, San Juan, Puerto Rico; University of Puerto Rico, San Juan, Puerto Rico
Certification: American Board of Pediatrics
Language: English & Spanish
Prabhjot Randev, MD

Prabhjot Randev, MD

Position:  Physician
Practice: Pediatrics
Native: Amritsar, Punjab, India
Location: CentroMed Noemi Galvan Eling Clinic
Education: Kasturba Medical College, Manipal, Karnataka, India
Residency: Icahn School of Medicine at Mount Sinai, New York, New York
Certification: Certification: American Board of Pediatrics
Language: English, Hindi, Urdu & Punjabi
Gabriel Perez, MD

Gabriel Perez, MD

Position:  Physician
Practice: Pediatrics
Native: San Antonio, Texas
Location: CentroMed SA Pediatrics Sorrento Plaza
Education: The University Medical Branch at Galveston, Galveston, Texas
Residency: Scott & White Medical Center, Temple, Texas
Language: English & Spanish
Juan Parra, MD Director of Pediatrics

Juan Parra, MD

Title: Director of Pediatrics
Position:  Physician
Practice: Pediatrics
Location: CentroMed Southside Medical
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: American Board of Pediatrics
Language: English & Spanish
Melody Muñoz , MD

Melody Muñoz , MD

Position:  Physician
Practice: Pediatrics
Native: Austin, TX
Location: CentroMed Southside Medical
Education: Rice University, Houston, TX, University of Texas Health Science Center at San Antonio, San Antonio, TX
Residency: UT Southwestern Children’s Medical Center, Dallas TX
Certification: Certification: American Board of Pediatrics
Language: English & Spanish
Ana M. Montanez-Concepcion, MD

Ana M. Montanez-Concepcion, MD

Position:  Physician
Practice: Pediatrics
Native: San Juan, Puerto Rico
Location: CentroMed SA Pediatrics Southeast
Education: University of Puerto Rico, Rio Piedras Campus, San Juan, Puerto Rico
Residency: University of Puerto Rico, Pediatric University Hospital, San Juan, Puerto Rico
Certification: American Board of Pediatrics
Language: English & Spanish
Jessica L. Molina, MD

Jessica L. Molina, MD

Position:  Physician
Practice: Pediatrics
Native: McAllen, Texas
Location: CentroMed Noemi Galvan Eling Clinic
Education: University of Texas Medical Branch, Galveston, Texas
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Certification: American Board of Pediatrics Certified
Language: English & Spanish
Leah Mercado, MD

Leah Mercado, MD

Position:  Physician
Practice: Pediatrics
Native: Manila, Philippines
Location: CentroMed SA Pediatrics Sorrento Plaza
Education: University of the East Ramon Magsaysay Medical Center, Manila, Philippines
Residency: Driscoll Children’s Hospital, Corpus Christi, Texas
Certification: American Board of Pediatrics
Language: English & Tagalog
Felix Koo, MD, Ph.D

Felix Koo, MD, Ph.D

Position: Physician
Practice: Pediatrics
Location: CentroMed SA Pediatrics New Braunfels
Education: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas
Language: English
Rosalio Jalomo, MD

Rosalio Jalomo, MD

Practice: Pediatrics
Native: Brownsville, Texas
Location: CentroMed SA Pediatrics Southwest
Education: Pan American University, Edinburg, Texas; University of Texas Health Science Center at San Antonio, San Antonio, Texas
Residency: University of Texas Health Science Center at San Antonio, San Antonio, Texas; The Bexar County Hospital District, San Antonio, Texas
Language: English & Spanish
Soheir Girgis, MD

Soheir Girgis, MD

Position:  Physician
Practice: Pediatrics
Native: Cairo, Egypt
Location: CentroMed Noemi Galvan Eling Clinic
Education: Cairo University, Cairo, Egypt
Residency: University of Illinois Medical Center, Chicago, Illinois Rush Presbyterian St. Luke Medical Center, Chicago, Illinois
Language: English & Arabic
Gerardo P. Enriquez, MD

Gerardo P. Enriquez, MD

Position:  Physician
Practice: Pediatrics
Native: Manila, Philippines
Location: CentroMed Palo Alto Clinic
Education: Faculty of Medical Science, Pinar del Rio, Cuba; Higher Institute of Medical Sciences of Havana, Havana, Cuba
Residency: San Juan City Hospital, San Juan, Puerto Rico; Texas Tech University Health Science Center, El Paso, Texas 
Language: English, Filipino & some Spanish
Yuly Carreras, MD Associate Chief Medical Officer

Yuly Carreras, MD, FAAP

Title: Associate Chief Medical Officer
Position:  Physician
Practice: Pediatrics
Native: Dominican Republic
Location: CentroMed SA Pediatrics New Braunfels
Education: Instituto Tecnológico de Santo Domingo, Santo Domingo, Dominican Republic
Residency: Lincoln Medical Center, Bronx, New York
Certification: American Board of Pediatrics; Fellow American Academy of Pediatrics
Language: English & Spanish
Juan Carballo, MD

Juan Carballo, MD

Position:  Physician
Practice: Pediatrics
Native: Fomento, Cuba
Location: CentroMed City Center
Education: Faculty of Medical Science, Pinar del Rio, Cuba; Higher Institute of Medical Sciences of Havana, Havana, Cuba
Residency: San Juan City Hospital, San Juan, Puerto Rico; Texas Tech University Health Science Center, El Paso, Texas 
Language: English & Spanish
Jennifer Bugna, MD

Jennifer Bugna, MD 

Position:  Physician
Practice: Pediatrics
Native: Bacolod City, Philippines
Location: CentroMed South Park Medical
Education: West Visayas State University, Iloilo, Philippines
Residency: NYCHHC Woodhull Hospital, Brooklyn, New York
Certification: American Board of Pediatrics
Language: English & Spanish
Joanne Bassali, MD

Joanne Bassali, MD

Position:  Physician
Practice: Pediatrics
Native: Chicago, Illinois
Location: CentroMed Noemi Galvan Eling Clinic
Education: University of Illinois, Chicago, Illinois
Residency: University of Texas in Houston, Houston, Texas
Certification: American Board of Pediatrics 
Language: English & Spanish
Arlene Williams-Brown, Board Member

Arlene Williams-Brown,
Board Member

Ms. Arlene Williams-Brown is a consumer representative on the CentroMed Board of Directors. She joined the board in 2019. Ms. William-Brown has been a patient of CentroMed since 2012 and is very familiar with the needs of the community. Ms. Williams-Brown retired from City Public Service Energy and is an active member of First Baptist Church. She is an active participant in board meetings and functions and provides insightful information on patient needs.

Diana M. Torres, Board Member

Diana M. Torres,
Board Member

Ms. Diana is a Patient Care Technician that has worked at University Dialysis for over 10 years. She is responsible for assisting patients with vital signs and their dialysis treatments. She has over 17 years of experience working with dialysis patients for multiple companies and is well versed in the array of services provided to dialysis patients.

Ms. Torres graduated from Homer Hanna High School in Brownsville Texas and completed some college hours at Southmost Community College in Brownsville Texas. Ms. Torres has been a consumer board member since June 1994. Ms. Torres is quite active with CentroMed she attends various functions and dutiful in attending board meetings.

Nicolas ‘Nick’ Rangel, CPA Board Member

Nicolas ‘Nick’ Rangel, CPA
Board Member

Mr. Nicolas Rangel is the Chief Financial Officer of the East Foundation, where he is responsible for the finance, accounting and risk management strategies of the Foundation. Mr. Rangel has over 25 years of experience leading multidisciplinary finance and accounting teams in various industries, including financial services, oil field services, hospitality and high technology. Prior to joining the Foundation, he served as Chief Accounting Officer at SWBC and Director of Accounting Operations at Rackspace. Additionally, Mr. Rangel worked for the international public accounting firms of Arthur Andersen and Ernst & Young where he an expatriate in Mexico City for two years and in Rio de Janeiro, Brazil for six years.

Mr. Rangel joined the board of directors at CentroMed in 2017 where he has generously shared his knowledge of accounting as the board considers different policies. Mr. Rangel and his wife, Lorene, have five children.

Richard Perez, MPA Board Member

Richard Perez, MPA
Board Member

Mr. Perez is an accomplished professional with remarkable achievements in public service. In his most recent appointment, Mr. Perez served as the 18th President and CEO of the 2,000-member San Antonio Chamber of Commerce. Mr. Perez attended schools in the South San Independent School District, a district located in the service area served by CentroMed. He received his Bachelor’s degree with a major in Urban and Regional Planning from Texas State University in San Marcos and a Master’s degree in Public Administration from the University of Kansas. Following graduate school, Mr. Perez served as Assistant to the City Manager for the City of Laredo. In 1998, he was appointed by the Clinton Administration as the Special Assistant to the Deputy Secretary of the U.S. Department of Housing and Urban Development, where he served until January 2001. Upon his return to San Antonio, he joined the family landscaping business and in 2004, Mr. Perez is married to Judy Lynn (Patterson) and they are the parents of three children: Clarissa, Elissa and Ricardo Antonio.

Mr. Perez was elected to the CentroMed Board of Directors in 2009. His leadership and overall participation on the Board has been outstanding. His knowledge of the San Antonio business community and civic leadership has been extremely helpful in advancing CentroMed.

Melinda Perez, Board Member

Melinda Perez,
Board Member

Mrs. Perez is a consumer representative on the CentroMed Board of Directors. After serving in a prior term, Mrs. Perez rejoined the board in December of 2020. Mrs. Perez currently works for an elementary school at Southside ISD as an attendance clerk. She is responsible for ensuring every student is registered and attends school daily. Her job entails various duties, such as communication with parents, students, staff, and administration. Mrs. Perez has been a patient of CentroMed since 2015 and is knowledgeable of the health care needs of the community. Having had the privilege of taking care of her elderly parents for over 25 years, Mrs. Perez understands the challenges that the elderly community encounters. Mrs. Perez has been an excellent board member and uniquely qualified to represent a segment of the patient population the clinic serves. Mrs. Perez is honored to serve on the board and looks forward to making a positive difference at CentroMed.

Norma L. Green Gutiérrez, MBA, RT (N) Board Member

Norma L. Green Gutiérrez, MBA, RT (N)
Board Member

Mrs. Norma L. Green Gutiérrez serves as Program Director in the Nuclear Medicine Science/Technology Division at the Ila Faye Miller School of Nursing and Health Professions, University of the Incarnate Word in San Antonio. Mrs. Green Gutiérrez received a Bachelor’s of Science in Nuclear Medicine Science from the University of Incarnate Word and a Masters of Business in Healthcare Management from Our Lady of the Lake University in San Antonio, Texas.

Ms. Green Gutiérrez has as served a consumer representative on the CentroMed Board of Directors since 1991. She and her family have been patients of CentroMed for over thirty years. During her time on the board, Ms. Green Gutiérrez has served on multiple committees serving with distinction and unmatched dedication. She provides quality input on many organizational policies and issues.

Elsa Gamboa, Board Member

Elsa Gamboa,
Board Member

Ms. Elsa Gamboa is a consumer board member that joined the Board of Directors in 2020. Ms. Gamboa is a Certified Dental Assistant and a Registered Dental Assistant in Texas. For the past 39 years she had worked as a dental assistant and has served as a member of the Dental Assistant National Board for the past 30 years. She joined the board to be involved and to contribute to something bigger than oneself. She has enjoyed seeing the growth of the organization firsthand as a patient and a board member. Mrs. Gamboa enjoys attending community events, craft shows and creating arts and crafts herself. She enjoys being involved in community events.

Juan A. Chavira, PhD., JD Board Member

Juan A. Chavira, PhD., JD
Board Member

Dr. Juan Antonio Chavira has a lengthy record of accomplishments both in educational attainment and in service to humanity. Upon earning a Bachelor of Arts Degree in Literature from the University of Houston, Dr. Chavira served in the Peace Corps followed by a one-year tour in Volunteers in Service to America (VISTA). He received his Master’s and Ph.D. degrees in Medical Sociology from the University of Texas at Austin. Dr. Chavira also earned a Juris Doctorate Law Degree at the University of Texas, School of Law in 1983. Dr. Chavira has taught at several universities, has published numerous research articles, and published a book. Dr. Chavira is officially retired but frequently provides lectures on his legal and sociological experiences to a variety of organizations and professional groups.

Dr. Chavira was appointed to the CentroMed Board of Directors in 2006 and serves as Chair of the board’s Health Services and Planning Committee where he provides leadership on the planning and delivery of health services and the development of policies. Dr. Chavira is a dedicated humanitarian lending his talents and support to advance human welfare.

Luz Cano, Board Member

Luz Cano,
Board Member

Mrs. Luz Cano is a Bilingual Elementary school teacher in the Harlandale Independent School District. She received her Bachelors in Interdisciplinary Studies from Texas A&M University – San Antonio. While at Texas A&M, she worked as a Peer Mentor with first-time college students. She also received the University Ring Award and the 2019 Outstanding Senior Award. Mrs. Cano is a graduate of Harlandale High School and is proud to teach in the school she attended.

Mrs. Cano was a teen mom while in high school but did not let her pregnancy stall or interrupt her education. She persevered and accomplished her goal in higher education. She has two children. Mrs. Cano is the first in her family to earn a college degree. She is a long-time patient of CentroMed. She began serving as a consumer board member in April of 2015. During her time with the board, she has served on the Health Services and Planning Committee providing valuable input on the type of services CentroMed provides and the experiences patients have while accessing care at CentroMed.

Lorraine Alaniz, Board Member

Lorraine Alaniz,
Board Member

Ms. Alaniz is a graduate of Harlandale Independent School District. She has worked at the school district as a school psychologist for 12 years. She works with students that have special needs and their parents. One of her primary goals is connecting parents with community resources. Every year, she helps coordinate with CentroMed to offer a symposium called “What’s Next” symposium. The goal of the program is to connect parents with resources once her special needs students have graduated from Harlandale High School. Ms. Alaniz has been a patient of CentroMed for several years. She was elected to the CentroMed Board of Directors in 2021 and has been very active in attending CentroMed-sponsored events and in all aspects of governance.

Elsa Martinez, CPA Secretary

Elsa Martinez, CPA
Secretary

Ms. Elsa Martinez is Certified Public Accountant (CPA) and local business owner with over 25 years of experience in the garment Dry Cleaning and Laundry service industry. As owner of A&M Cleaners, Ms. Martinez maintains business relationships with individual and commercial customers including the U.S. Army Medical Command. Ms. Martinez received a Bachelor of Business Administration in Accounting from the University of Texas at San Antonio in 1996 and passed the CPA Examination in the same year. Ms. Martinez and her family have been patients of CentroMed for over 20 years. She joined the CentroMed Board of Directors as a consumer representative in 2014 and now serves as Board Secretary. She is an active board member sharing her business expertise. As an active patient with first-hand experience of the services CentroMed provides, Ms. Martinez provides insight into the patient’s experience as the board considers important policies.

Rudy M. Peña, ISA, G.G. Second Vice Chair and Treasurer

Rudy M. Peña, ISA, G.G.
Second Vice Chair and Treasurer

Mr. Peña is the owner of Peña & Associates Appraisal and Jewelry Services. He received his Graduate Gemologist Certificate from the Gemological Institute of America (GIA) in Santa Monica, California. He is a Member of the International Gemological Alumni Association and former President of the International Society of Appraisers, San Antonio Chapter. He has served as expert witness and/or has provided appraisal services for governmental agencies, such as, the U.S. Marshals, Federal Bureau of Investigations (FBI), Internal Revenue Service (IRS), Homeland Security, and Drug Enforcement Agency (DEA).

Mr. Peña joined the CentroMed Board of Directors 2011 and now serves as 2nd Vice Chair and Treasurer. During his tenure, Mr. Peña has proven to be a dedicated and avid supporter of CentroMed. He actively participates in CentroMed events and freely shares his business expertise in his role as Board Treasurer.

Heriberto “Berto” Guerra, Jr., First Vice Chair

Heriberto “Berto” Guerra, Jr.,
First Vice Chair

Mr. Guerra is Chairman and CEO of Avanzar Interior Technologies GP, LLC, an automotive interior manufacturing company. Mr. Guerra earned a Bachelor of Applied Arts and Sciences Degree in Interdisciplinary Management from Texas State University (TSU) in 1984 and was recognized as its Distinguished Alumnus in 2007. He and his wife, Tammy, have four children and nine grandchildren.

Mr. Guerra was elected to the board of directors of CentroMed 1999 and continues to serve as 1st Vice President. His commitment to CentroMed’s mission is most evident by his leadership, active participation in CentroMed activities, and his generosity. In recognition of his volunteer service and his remarkable leadership and success in raising funds to build a new clinic, the Board of Directors honored Mr. Guerra by naming a newly constructed Health and Wellness Center, The Berto Guerra Jr. Clinic.

Noemi Galván Eling, Esq Board Chair

Noemi Galván Eling, Esq
Board Chair

A graduate of the University of Texas, School of Law, Ms. Galván Eling devoted her career to the practice of law as a public interest attorney for the Bexar County Legal Aid and Texas Rio Grande Legal Aid in San Antonio. Ms. Galván Eling was awarded a Fulbright Fellowship to serve as an American Lecturer in Lima, Peru. She received her License from State Bar of Texas in November 1983 and is a member of the San Antonio Bar Association.

Ms. Galván Eling was initially appointed to the Board of Directors in 1984 and served six (6) years. Upon her return from her Fullbright engagement, the CentroMed Board re-appointed Ms. Galván Eling to the board in 1992 and elected her to leadership as Board Chairperson and continues to serve in that role. As a tribute to her dedicated service, the CentroMed Board of Directors honored her by naming its clinic on Walzem Road, the Noemi Galván Eling Clinic.

Clevert Tseng, MD Associate Chief Medical Officer

Clevert Tseng, MD
Associate Chief Medical Officer

Yuly Carreras, MD Associate Chief Medical Officer

Yuly Carreras, MD
Associate Chief Medical Officer

Veronica Betancur, MD Associate Chief Medical Officer

Veronica Betancur, MD
Associate Chief Medical Officer

Aysun Alagoz, MD Associate Chief Medical Officer

Aysun Alagoz, MD
Associate Chief Medical Officer

Angelica Padilla, PHR, SHRM-CP Associate Vice President - Human Resources

Angelica Padilla, PHR, SHRM-CP
Associate Vice President – Human Resources

Angelica Padilla became a part of CentroMed’s executive team in June 2023, assuming the role of Associate Vice President of Human Resources. With a career spanning over 16 years, she has garnered extensive expertise in Human Resources across a wide spectrum of industries, including retail, healthcare, business services, logistics, metal manufacturing, and food manufacturing.

Angelica’s educational background includes a bachelor’s degree in business administration with a specialization in Accounting, as well as a Master of Business Administration, both earned from Texas A&M International University in Laredo, Texas. Her commitment to professional excellence is evident through her certification as a Professional in Human Resources by the HR Certification Institute (HRCI) since 2014 and her certification from the Society of Human Resource Management (SHRM) since 2015. She maintains active membership in SHRM, and she is currently affiliated with the San Antonio SHRM chapter.

David K. Amason, Associate Vice President - Assistant Chief Information Officer

David K. Amason,
Associate Vice President – Assistant Chief Information Officer

Raymond Wei

Raymond Wei, MS, FACHE
Vice President & Chief Information Officer

Raymond currently serves as Vice President & Chief Information Officer for El Centro del Barrio (CentroMed), a Federally Qualified Health Center located in San Antonio, Texas. He is responsible for managing the Information Technology and Health Informatics areas. Before assuming the role of CIO, he managed the Patient Navigation Center, pharmacy, and laboratory operations. Prior to joining CentroMed in 2010, Mr. Wei was Director of Strategic Planning and Physician Contracting for a major hospital system in San Antonio, Texas, with 14 years of progressive responsibility in areas including planning and business development, physician recruitment and contracting, operational and financial analysis, and social accountability and community benefits.

Mr. Wei is a Fellow of the American College of Healthcare Executives. He holds a Bachelor of Arts degree in Biochemistry from Rice University in Houston and a Master of Science degree in Health Care Administration from Trinity University in San Antonio. He currently serves on the Board of Directors for the Good Samaritan Community Services, and he previously served as Board chair of The Bexar County Community Health Collaborative and served on the Board of Directors for the San Antonio Area Chapter of the American Red Cross. On the home front, Mr. Wei enjoys spending quality time with his wife Christina and their five children.

Margarita Seaman, MHA, DDS Vice President – Strategic Operations

Margarita Seaman, MHA, DDS
Vice President – Strategic Operations

Margarita Seaman joined Centromed’s executive team in August 2016. She has over 18 years of health care management experience, including practice management, healthcare consulting and hospital administration. Prior to Centromed, she served as Chief Operations Officer at Bandera Family Healthcare, Chief Operations Officer at Allerta Corp, and Director of a division of the Nix Healthcare System. Ms. Seaman has a strong background on financial management, revenue enhancement, business development, and compliance with federal and state requirements.

Ms. Seaman holds a degree in dentistry from Universidad Javeriana Escuela de Odontologia in Bogota, Colombia and a Masters in Health Care Administration from Trinity University in San Antonio, Texas.

In 2005, Dr. Seaman was selected as “40 under 40 Rising Stars of San Antonio” by The San Antonio Business Journal.

Carlos D. Gómez, MHA Vice President - Regional Operations

Carlos D. Gómez, MHA
Vice President – Regional Operations

Ana Maria Garza Cortez, MA Senior Vice President & Chief Development Officer

Ana Maria Garza Cortez, MA
Senior Vice President & Chief Development Officer

Ana Maria Garza Cortez serves as the Senior Vice President and Chief Development Officer at CentroMed, a Federally Qualified Health Center in San Antonio. She is responsible for marketing, fundraising, public relations, customer service, event planning as well as overseeing the eligibility and outreach & enrollment departments. Ana Maria received her Bachelor of Arts in Public Administration from Our lady of the Lake University in San Antonio and her Master of Arts from Webster University – Fort Sam Houston in San Antonio. She serves as a leader on the Enroll SA/Get Bexar Covered Coalition, which is comprised of a group of local hospitals, community agencies, faith based organizations and many non-profits working to increase awareness about the Affordable Care Act and help people find healthcare options to meet their budgets. In March of 2016, Ana Maria was recognized by The White House as A Champion of Change for her leadership in promoting and assisting families to enroll in health coverage through the Affordable Care Act. She has served on several non-profit boards and currently serves on the board of directors with the Madonna Neighborhood Center and the Good Samaritan Center. Ana Maria and her husband Andres Cortez have two children.

Anna Serrano

Anna Serrano, DrPH, MBA
Senior Vice President & Chief Population Health Officer

Dr. Anna Serrano is the Senior Vice President and Chief Population Health Officer for El Centro del Barrio dba CentroMed, responsible for the agency’s Population Health Management program focused on the coordination of care delivery across populations to improve clinical and financial outcomes through disease management, case management and demand management. She also manages all aspects of the agency’s Compliance/Performance Improvement Program, grant procurement, existing service contracts to ensure compliance with performance, reporting and regulatory requirements and all activities related to organizational certifications and accreditations, including The Joint Commission and NCQA. Additionally, Dr. Serrano manages the agency’s Navigation Center, which houses the Nurse Triage Line, Medical Records Department, Referrals Department, Patient Appointment Line and Patient Care Coordination.

Inclusive of her time at CentroMed, Dr. Serrano has been working for FQHCs for over 20 years, serving in various roles along the way. She earned her Bachelors in Social Science through Florida State University, majoring in Sociology and Criminal Justice; her Master of Public Health through UTHSC-Houston School of Public Health, Master of Business Administration through Webster University, and her Doctorate of Public Health from the UTHSC-Houston School of Public Health.

Lawrence Charles “Chuck” Walzel, CPA Senior Vice President & Chief Financial Officer

Lawrence Charles “Chuck” Walzel, CPA
Senior Vice President & Chief Financial Officer

Chuck Walzel serves as Senior Vice President and Chief Financial Officer for El Centro del Barrio d/b/a CentroMed. In this capacity, he manages the financial strategy and accounting operations of a company with assets in excess of $61 million and an operating budget of more than $54 million which provides services to over 75,000 patients per year. Walzel is committed to maximizing profitability, productivity and efficiency, securing assets, assuring regulatory and GAAP compliance and developing strategies which support growth, liquidity, contingency reserves and conservative fiscal practices.

Walzel joined CentroMed in 1998 from The Center for Health Care Services where he served as the Chief Financial Officer. He joined the Center for Health Care Services in 1994 as Budget Manager and was promoted to Chief Financial Officer in 1996. Previously he spent 7 years at BancPlus Mortgage Corporation as a Senior Financial Analyst specializing in long range forecasting and portfolio acquisition modeling. Prior to that, he spent 3 years at Commerce Savings Association as an Accountant II in the Real Estate Owned / Commercial Foreclosure division and 2 years at American Mayflower Moving and Storage as a Staff Accountant.

In addition, Walzel has worked part-time evenings as an Adjunct Professor at San Antonio College from 1991-1994 in the Computer Information Systems school teaching spreadsheet design. He also worked as Adjunct Professor for the University of the Incarnate Word at the HEB School of Business from 2004-2007 teaching advanced corporate finance and governmental accounting.

Walzel holds a bachelor’s degree in accounting from Stephen F. Austin State University and a master of business administration degree from Webster University. He is also licensed as a Certificated Public Accountant with the Texas State Board of Public Accountancy.

Don Macaulay

Don Macaulay, MBA
Senior Vice President & Chief Operations Officer

Mr. Macaulay presently serves as Senior Vice President and Chief Operations Officer for CentroMed, a Federally Qualified Health Center providing medical and dental care, behavioral health services and other supportive health services through a network of 24 clinic sites that include Bexar and Comal Counties. Mr. Macaulay is responsible for the clinical operations for medical, dental, and behavioral health services throughout the organization. Other responsibilities include: optometry, WIC, adult day care, CentroMed’s Fitness Center, facilities management, and management of construction projects.

Prior to joining CentroMed, Mr. Macaulay held several management positions in hospitals with Humana and Columbia/HCA.

Mr. Macaulay presently serves as the board chair for the Healthcare Access San Antonio a non-profit organization that is the Health Information Exchange (HIE) for South Central Texas that includes a 22 county service area. Mr. Macaulay has served on the board since October 2011.

Mr. Macaulay earned a Bachelor of Business Administration in Finance from Texas Tech University in Lubbock, Texas and a Master of Business Administration from the University of Phoenix.

 

Norma G. Parra, MD Senior Vice President & Chief Medical Officer

Norma G. Parra, MD
Senior Vice President & Chief Medical Officer

Dr Norma Parra is a Family Practice Physician. She joined CentroMed in 1991 and became Chief Medical Officer for CentroMed in 1993. CentroMed is a Federally Qualified Healthcare Center with 23 sites providing Primary Care in primarily medically underserved areas.

Dr Norma Parra received her Bachelor of Science degree from Yale University and her MD degree from Texas Tech Health Science Center. She fulfilled her Family Practice Residency requirements at University of Texas Health Science Center in San Antonio, Texas.

After Residency and prior to joining CentroMed, Dr Norma Parra worked with homeless population at Venice Family Clinic in Venice, California.

Dr Norma Parra is a member of Texas Academy of Family Practice, American Academy of Family Practice, Mexican American Hispanic Physicians Association and National Hispanic Medical Association (NHMA).

She currently serves as Board Member of NHMA and also serves on Utilization Review Committee and Pharmacy and Therapeutics Committee for Superior Health Plan. 

Prior positions include Board Member for Ethics Committee of Bexar County Medical Society and Advisor for local Metro Health Department. 

Awards include: Prudential Salute to Healthcare, Ford Salute to Education in Healthcare, Icon in Healthcare Award and Distinguished Women in Healthcare. 

Dr Norma Parra was born and raised in Corpus Christi Texas. She is married to Dr Ernesto Parra and they have 3 children – Sonia, Elsa and Jaime. 

Graciela Alarcon

Graciela Alarcon-Cigarroa, JD, LLM
General Counsel

Graciela A. Cigarroa is the General Counsel at El Centro del Barrio d/b/a CentroMed. Ms.Cigarroa provides inhouse counsel to the Board of Directors and staff members; reviews CentroMed’s legal documents, policies and contracts; designs and implements trainings for CentroMed staff; conducts federal and state statute, regulation, and policy analysis; performs privacy officer duties overseeing the organizations privacy policies and procedures; and assists with the implementation of the corporate compliance program addressing a variety of legal issues to enable compliant and efficient operations. 

Ms. Cigarroa joined CentroMed in April of 2011 from the Law Office of Graciela A. Cigarroa. She has over 25 years of legal experience with a focus for the last 15 years on nonprofit and health law. She has been published and has been a frequent speaker in the area of HIPAA privacy law. 

Ms. Cigarroa holds a Bachelor of Arts degree in political science from St. Mary’s University, a Juris Doctor degree from St. Mary’s University School of Law and a Master of Laws degree in tax law from Boston University School of Law. She is a fellow of the Texas Bar Foundation and sits on several community boards. 

Ernesto Gómez, PhD. President & CEO

Ernesto Gómez, PhD.
President & CEO

Ernesto Gómez, Ph.D., is founder of El Centro del Barrio, now doing business as CentroMed. Dr. Gómez has served as the President and Chief Executive Officer at CentroMed since its inception in 1973 and now presides over a primary health care system that operates 27 ambulatory clinics in Bexar and Comal Counties and two (2) Fitness Centers. In 2022, CentroMed served 121,647 unduplicated patients involving 396,302 patient visits. 

Dr. Gomez has served on numerous Board of Directors at the local, state and national levels. He has received numerous honors and awards for the work he has done in underserved communities. The most distinguishing honor he received is the “Well-being of Mankind” award presented by the Rockefeller Foundation. Gomez’s accomplishments include several publications in the social and behavioral sciences and in healthcare with special focus on the low income, uninsured populations.

Dr. Gomez is Professor Emeritus at Our Lady of the Lake University (OLLU) where, over the course of 37 years, he taught graduate level courses in research methods, quantitative methods, public policy, administration, human behavior, and social work practice. Dr. Gomez received his Doctorate of Philosophy from the University of Texas at Austin. 

Updated: October 2023