Maria L. Martinez Ugarte, MD
NPI 1346424264ActiveIndividual· Colon & Rectal Surgery· San Antonio, TX
Colon & Rectal Surgery (MD) with Gmg Health Systems Associates PA, practicing in San Antonio, Texas. Their prescriptions cost Medicare Part D more than their services did: $155,654 for 956 claims, against $6,428 paid for services in 2024. Medtronic, Inc. was the largest of 5 companies reporting payments in 2025, $655.80 in all, mostly food and beverage. Lists Methodist Hospital as a hospital affiliation.
Overview
| NPI | 1346424264 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 27, 2007 |
| Last updated in NPPES | Aug 9, 2022 |
| Certified by provider | Aug 2, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Colon & Rectal Surgery Primary | 208C00000X | R7813 | TX |
| Colon & Rectal Surgery | 208C00000X | 55709 | MN |
| Colon & Rectal Surgery | 208C00000X | 106302 | MN |
| Surgery | 208600000X | R7813 | TX |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Colorectal Surgery (Proctology) (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 26 |
|---|---|
| Services billed | 175 across 26 procedure codes |
| Paid by Medicare | $6,428 |
Part D prescriptions in 2024
| Prescriptions (claims) | 956 · 1,011 30-day fills |
|---|---|
| Patients | 408 |
| Total drug cost | $155,654 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Colorectal Surgery (Proctology) |
| Secondary specialties | General Surgery |
Medical group
- Gmg Health Systems Associates PASan Antonio, TX · 117 clinicians
Hospital affiliation
- Methodist HospitalSan Antonio, TX
Industry payments (Open Payments)
- 2025$655.80 · 10 payments from 5 companies
- 2024$10,032 · 21 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $286.98 | 4 |
| Sanara Medtech Inc. | $178.37 | 3 |
| Baxter Healthcare | $128.66 | 1 |
| Intuitive Surgical, Inc. | $32.97 | 1 |
| Lexington Medical, Inc. | $28.82 | 1 |
What the 2025 payments were for
- Food and Beverage$655.80 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 colorectal surgeons in San Antonio · All colorectal surgeons in Texas