Owen S. Maat, MD
NPI 1295780609ActiveIndividual· Internal Medicine, Gastroenterology· Harlingen, TX
Internal Medicine, Gastroenterology (MD) in Harlingen, Texas, trained at University of Texas Medical Branch at Galveston (class of 1992). In 2024 Medicare paid $64,104 for 432 patients, and Part D covered 434 of their prescriptions, 85% of them generic. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $144.69 in all, mostly food and beverage.
Overview
| NPI | 1295780609 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 23, 2006 |
| Last updated in NPPES | Nov 14, 2023 |
| Certified by provider | Nov 14, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | J5609 | TX |
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 | 432 |
|---|---|
| Services billed | 687 across 42 procedure codes |
| Paid by Medicare | $64,104 |
Part D prescriptions in 2024
| Prescriptions (claims) | 434 · 599 30-day fills |
|---|---|
| Patients | 221 |
| Total drug cost | $85,249 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Hood Medical GroupGranbury, TX · 56 clinicians
- Gastroenterology Consultants of South Texas, PLLCHarlingen, TX · 42 clinicians
Hospital affiliations
- Doctors Hosptal at RenaissanceEdinburg, TX
- Harlingen Medical CenterHarlingen, TX
- Lake Granbury Medical CenterGranbury, TX
- Valley Regional Medical CenterBrownsville, TX
Industry payments (Open Payments)
- 2025$144.69 · 7 payments from 4 companies
- 2024$184.65 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $66.32 | 3 |
| Ipsen Biopharmaceuticals, Inc | $42.13 | 2 |
| Janssen Biotech, Inc. | $20.36 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $15.88 | 1 |
What the 2025 payments were for
- Food and Beverage$144.69 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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