Nicholas Perez Martinez, M.D.
NPI 1174843726ActiveIndividual· Internal Medicine, Gastroenterology· San Antonio, TX
Internal Medicine, Gastroenterology (M.D.) with Gastroenterology Clinic of San Antonio PA, practicing in San Antonio, Texas. Their prescriptions cost Medicare Part D more than their services did: $716,275 for 1,863 claims, against $150,134 paid for services in 2024. Janssen Biotech, Inc. was the largest of 15 companies reporting payments in 2025, $1,532 in all, mostly food and beverage. Lists Methodist Hospital as a hospital affiliation.
Overview
| NPI | 1174843726 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 6, 2010 |
| Last updated in NPPES | Jul 19, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | P7155 | 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 - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 275 |
|---|---|
| Services billed | 4,917 across 42 procedure codes |
| Paid by Medicare | $150,134 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,863 · 2,677 30-day fills |
|---|---|
| Patients | 422 |
| Total drug cost | $716,275 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Gastroenterology Clinic of San Antonio PASan Antonio, TX · 8 clinicians
Hospital affiliation
- Methodist HospitalSan Antonio, TX
Industry payments (Open Payments)
- 2025$1,532 · 80 payments from 15 companies
- 2024$39,295 · 115 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $412.16 | 25 |
| Abbvie Inc. | $330.84 | 23 |
| Pfizer Inc. | $170.36 | 5 |
| Takeda Pharmaceuticals U.S.A., Inc. | $133.27 | 7 |
| Janssen Scientific Affairs, LLC | $130.08 | 1 |
What the 2025 payments were for
- Food and Beverage$1,448 · 79 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 136 gastroenterologists in San Antonio · All gastroenterologists in Texas