Nolan E. Perez, MD
NPI 1184726986ActiveIndividual· Internal Medicine, Gastroenterology· Harlingen, TX
Internal Medicine, Gastroenterology (MD) in Harlingen, Texas, trained at University of Texas Medical School at San Antonio (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $844,543 for 4,796 claims, against $92,662 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 12 companies reporting payments in 2025, $40,817 in all, mostly speaking and faculty fees.
Overview
| NPI | 1184726986 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 2, 2006 |
| Last updated in NPPES | Apr 22, 2021 |
| Certified by provider | Apr 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | L4640 | TX |
| Internal Medicine, Gastroenterology | 207RG0100X | 4301082613 | MI |
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 | 736 |
|---|---|
| Services billed | 1,137 across 44 procedure codes |
| Paid by Medicare | $92,662 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,796 · 6,764 30-day fills |
|---|---|
| Patients | 2,412 |
| Total drug cost | $844,543 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Gastroenterology |
Medical group
- Gastroenterology Consultants of South Texas, PLLCHarlingen, TX · 42 clinicians
Hospital affiliations
- Doctors Hosptal at RenaissanceEdinburg, TX
- Harlingen Medical CenterHarlingen, TX
- Rio Grande Regional HospitalMcAllen, TX
- Valley Regional Medical CenterBrownsville, TX
- Vhs Harlingen Hospital Company LLCHarlingen, TX
Industry payments (Open Payments)
- 2025$40,817 · 55 payments from 12 companies
- 2024$103,026 · 99 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $23,060 | 22 |
| Phathom Pharmaceuticals, Inc. | $10,501 | 7 |
| Abbvie Inc. | $6,174 | 14 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $560.95 | 2 |
| Boston Scientific Corporation | $246.56 | 2 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$32,897 · 9 payments
- Travel and Lodging$4,190 · 9 payments
- Food and Beverage$2,214 · 35 payments
- Consulting Fee$1,518 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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