Michael David Brown
Physician Assistant, Medical with David A Marks MD PA, practicing in San Antonio, Texas. In 2024 Medicare paid $10,321 for 90 patients, and Part D covered 231 of their prescriptions, 89% of them generic. Ipsen Biopharmaceuticals, Inc was the largest of 19 companies reporting payments in 2025, $1,223 in all, mostly food and beverage. Lists University Health System as a hospital affiliation. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1215479241 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Nov 8, 2016 |
| Last updated in NPPES | Apr 4, 2025 |
| Certified by provider | Apr 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | PA10970 | TX |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in Texas, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Michael Rodd Brown · Owner/Operator | 1128a1 | Sep 20, 2005 | Corinth, TX |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 - Physician Assistant (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 90 |
|---|---|
| Services billed | 253 across 35 procedure codes |
| Paid by Medicare | $10,321 |
Part D prescriptions in 2024
| Prescriptions (claims) | 231 · 259 30-day fills |
|---|---|
| Patients | 161 |
| Total drug cost | $7,391 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- David A Marks MD PASan Antonio, TX · 2 clinicians
Hospital affiliation
- University Health SystemSan Antonio, TX
Industry payments (Open Payments)
- 2025$1,223 · 39 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ipsen Biopharmaceuticals, Inc | $212.06 | 11 |
| Astrazeneca Pharmaceuticals LP | $173.78 | 5 |
| Madrigal Pharmaceuticals | $171.52 | 4 |
| Intercept Pharmaceuticals, Inc. | $124.36 | 1 |
| Intuitive Surgical, Inc. | $118.11 | 1 |
What the 2025 payments were for
- Food and Beverage$1,223 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 211 physician assistants in San Antonio · All physician assistants in Texas