Bassem Mazloum, M.D.
NPI 1154374742ActiveIndividual· Specialist· San Antonio, TX
Specialist (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: $1,668,199 for 3,306 claims, against $103,603 paid for services in 2024. Aimmune Therapeutics, Inc. was the largest of 6 companies reporting payments in 2025, $301.05 in all, mostly food and beverage. Lists Methodist Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1154374742 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 18, 2006 |
| Last updated in NPPES | Oct 29, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | J3156 | 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 | 361 |
|---|---|
| Services billed | 2,239 across 40 procedure codes |
| Paid by Medicare | $103,603 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,306 · 5,304 30-day fills |
|---|---|
| Patients | 655 |
| Total drug cost | $1,668,199 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Gastroenterology Clinic of San Antonio PASan Antonio, TX · 8 clinicians
Hospital affiliations
- Methodist HospitalSan Antonio, TX
- Uvalde Memorial HospitalUvalde, TX
- Val Verde Regional Medical CenterDel Rio, TX
Industry payments (Open Payments)
- 2025$301.05 · 11 payments from 6 companies
- 2024$52.34 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aimmune Therapeutics, Inc. | $138.32 | 2 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $56.55 | 3 |
| Janssen Biotech, Inc. | $31.94 | 2 |
| Phathom Pharmaceuticals, Inc. | $27.88 | 2 |
| Abbvie Inc. | $24.89 | 1 |
What the 2025 payments were for
- Food and Beverage$301.05 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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