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GONZABA MEDICAL GROUP
NPI 1023030160
Family Medicine in San Antonio, TX

Active since July 25, 2006CLIA Certified · 7 labs
720 PLEASANTON RD, SAN ANTONIO, TX 78214(210) 921-3800(210) 334-2851 Get Directions Write a Review

NPPES record last updated: March 31, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 31, 2023, Jul 19, 2022 (2 updates tracked since 2022).

About Gonzaba Medical Group NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GONZABA MEDICAL GROUP (NPI 1023030160) is a healthcare organization registered as a family medicine in San Antonio, Texas and active in the NPI registry since July 2006. The organization holds 7 active CLIA laboratory certificates and lists William Gonzaba, President/ceo, as its authorized official.

NPPES Registry Identity

NPI1023030160
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameGMG HEALTH SYSTEMS ASSOCIATES PA
Location Address720 PLEASANTON RDSan Antonio, TX 78214-1306
Mailing Address720 Pleasanton RdSan Antonio, TX 78214-1306 · (210) 921-3800 · Fax (210) 921-6620
Phone(210) 921-3800
Fax(210) 334-2851
Organization SubpartNo
Authorized OfficialWilliam GonzabaPresident/ceo · (210) 921-3800
Enumeration DateJuly 25, 2006
Last NPPES UpdateMarch 31, 20232 updates tracked since enumeration
NPPES CertifiedMarch 31, 2023
✔ NPI 1023030160 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedInternal MedicineTaxonomy 207R00000X
720 PLEASANTON RD, San Antonio, TX 78214
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Other Names 1

Doing Business AsGonzaba Medical Group

Other Identifiers 2

OtherCH4150TX · Rr Medicare
Medicaid081146501TX

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gonzaba Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

140

Medicare enrollment records show 140 clinicians reassign Medicare billing to Gonzaba Medical Group, which bills Medicare for the services they deliver. Of these, 35 practice at this address and 86 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 14

Diagnostic Radiology38
Nurse Practitioner33
Family Practice26
Internal Medicine24
Physical Therapist in Private Practice5
Hospitalist3
Rheumatology3
Chiropractic2
6 other specialties6

Nearest to this location (20)

See all 140
Carla Acra Despradel, M.D.
Internal Medicine
NPI 1114181666
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Luis Anaya Hoyos, M.D.
Endocrinology
NPI 1154578078
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Norys Castro Pena, M.D.
Internal Medicine
NPI 1265797690
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Justo Cisneros, MD
Internal Medicine
NPI 1427168061
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Christen Cuevas, M.D., M.P.H.
Family Practice
NPI 1386021145
720 PLEASANTON RD.
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Yolanda Duglas, FNP
Nurse Practitioner
NPI 1649230848
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Julian Falla, MD
Internal Medicine
NPI 1710141437
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Jesus Garcia Gallegos, MD
Family Practice
NPI 1427252089
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Aaron Garza Romero, M.D.
Rheumatology
NPI 1912294976
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Louis Gutierrez, MD
Family Practice
NPI 1598969164
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3867
✔ PECOS✔ Accepts MedicareSame address
Terri Kirn, M.D.
Family Practice
NPI 1770843625
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Claudia Ubinas Frias, MD
Hospitalist
NPI 1215227392
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Esther Urbaez Duran, M.D.
Hematology/Oncology
NPI 1447469150
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Ryan Willett
Diagnostic Radiology
NPI 1629531280
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Lavonna Zavala, FNP
Nurse Practitioner
NPI 1841909843
720 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Robert Cyr, DPM
Podiatry
NPI 1548466428
730 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Eithan Kotkowski, MD, PHD
Neurology
NPI 1497332498
730 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Maria Martinez Ugarte, MD
Colorectal Surgery (Proctology)
NPI 1346424264
730 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
Stuart Saunders, MPT
Physical Therapist in Private Practice
NPI 1245359793
730 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ Accepts MedicareSame address
Rocio Neri-Hernandez, NP
Nurse Practitioner
NPI 1285095307
730 PLEASANTON RD
San Antonio, TX 78214
(210) 921-3800
✔ PECOS✔ Accepts MedicareSame address
See all 140 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA 7

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 45D2105685

Gmg Health Systems, Ltd Dba Gonzaba Medical Group - Main · San Antonio, TX
Active · expires Jul 13, 2027
CLIA Number45D2105685
Laboratory TypePhysician Office
Certificate Effective DateJuly 14, 2025
Certificate Expiration DateJuly 13, 2027
Laboratory DirectorDr. Melissa Martinez Diaz
Laboratory Phone(210) 921-3800
Laboratory LocationGmg Health Systems, Ltd Dba Gonzaba Medical Group - Main720 Pleasanton Road, San Antonio, TX 78214
CLIA data matches this NPI record on: Address Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Accreditation 45D2078792

Gmg Health Systems, Ltd Dba Gonzaba Medical Group- Guadalupe · San Antonio, TX
Active · expires Jul 13, 2027
CLIA Number45D2078792
Laboratory TypePhysician Office
Certificate Effective DateJuly 14, 2025
Certificate Expiration DateJuly 13, 2027
Laboratory DirectorDr. Melissa Martinez Diaz
Laboratory Phone(210) 921-3800
Laboratory LocationGmg Health Systems, Ltd Dba Gonzaba Medical Group- Guadalupe1313 Guadalupe Suite 100, San Antonio, TX 78207
CLIA data matches this NPI record on: Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Accreditation 45D2105684

Gmg Health Systems, Ltd Dba Gonzaba Medical Group - Southeast · San Antonio, TX
Active · expires Jul 13, 2027
CLIA Number45D2105684
Laboratory TypePhysician Office
Certificate Effective DateJuly 14, 2025
Certificate Expiration DateJuly 13, 2027
Laboratory DirectorDr. William T. Gonzaba
Laboratory Phone(210) 921-3800
Laboratory LocationGmg Health Systems, Ltd Dba Gonzaba Medical Group - Southeast1130 Goliad Road, San Antonio, TX 78223
CLIA data matches this NPI record on: Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Accreditation 45D2116466

Gmg Health Systems Ltd Dba Gonzaba Medical Group - North Central · San Antonio, TX
Active · expires Jul 13, 2027
CLIA Number45D2116466
Laboratory TypePhysician Office
Certificate Effective DateJuly 14, 2025
Certificate Expiration DateJuly 13, 2027
Laboratory DirectorDr. Melissa Martinez Diaz
Laboratory Phone(210) 921-3800
Laboratory LocationGmg Health Systems Ltd Dba Gonzaba Medical Group - North Central6487 Blanco Road, San Antonio, TX 78216
CLIA data matches this NPI record on: Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Accreditation 45D2290351

Gmg Health Systems, Ltd Dba Gonzaba Medical Group-Obs · San Antonio, TX
Active · expires Dec 16, 2026
CLIA Number45D2290351
Laboratory TypePhysician Office
Certificate Effective DateDecember 17, 2024
Certificate Expiration DateDecember 16, 2026
Laboratory DirectorDr. Claudia Ubinas Frias
Laboratory Phone(210) 921-3800
Laboratory LocationGmg Health Systems, Ltd Dba Gonzaba Medical Group-Obs711 Pleasanton Road, San Antonio, TX 78214
CLIA data matches this NPI record on: Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Accreditation 45D2149513

Gmg Health Systems, Ltd Dba Gonzaba Medical Group Northwest · San Antonio, TX
Active · expires Jul 27, 2027
CLIA Number45D2149513
Laboratory TypePhysician Office
Certificate Effective DateJuly 28, 2025
Certificate Expiration DateJuly 27, 2027
Laboratory DirectorDr. Melissa Martinez Diaz
Laboratory Phone(210) 509-2603
Laboratory LocationGmg Health Systems, Ltd Dba Gonzaba Medical Group Northwest7219 Culebra Road, San Antonio, TX 78214
CLIA data matches this NPI record on: Name
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gmg Health Systems Associates PA's NPI number?

The NPI number for Gmg Health Systems Associates PA is 1023030160. It was assigned to this organization in the NPPES registry on July 25, 2006. The provider is doing business as Gonzaba Medical Group.

Where is Gmg Health Systems Associates PA located?

Gmg Health Systems Associates PA is located at 720 Pleasanton Rd, San Antonio, TX 78214. The listed phone number is (210) 921-3800.

What is Gmg Health Systems Associates PA's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Gmg Health Systems Associates PA enrolled in Medicare?

Yes. Gmg Health Systems Associates PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gmg Health Systems Associates PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 140 clinicians in 14 Medicare specialties reassign their Medicare billing to Gmg Health Systems Associates PA. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Diagnostic Radiology (38), Nurse Practitioner (33) and Family Practice (26). Of these, 35 practice at this address and 86 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Gmg Health Systems Associates PA hold CLIA laboratory certificates?

Yes. 7 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Gmg Health Systems Associates PA accept?

Health plans from WellPoint list Gmg Health Systems Associates PA as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gmg Health Systems Associates PA was last updated on March 31, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.