Brent L. Williamson, M.D.
NPI 1457792392ActiveIndividual· Internal Medicine· York, PA
Internal Medicine (M.D.) with Mary Washington Healthcare Providers LLC, practicing in York, Pennsylvania. In 2024 Medicare paid $65,538 for 457 patients, and Part D covered 229 of their prescriptions, 89% of them generic. Salix Pharmaceuticals, A Division of Bausch Health US, LLC was the largest of 7 companies reporting payments in 2025, $314.59 in all, mostly food and beverage. Lists Mary Washington Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1457792392 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 8, 2013 |
| Last updated in NPPES | Jul 20, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD458584 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 457 |
|---|---|
| Services billed | 983 across 5 procedure codes |
| Paid by Medicare | $65,538 |
Part D prescriptions in 2024
| Prescriptions (claims) | 229 · 235 30-day fills |
|---|---|
| Patients | 139 |
| Total drug cost | $12,263 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Mary Washington Healthcare Providers LLCMc Lean, VA · 262 clinicians
Hospital affiliations
- Mary Washington HospitalFredericksburg, VA
- Stafford Hospital, LLCStafford, VA
Industry payments (Open Payments)
- 2025$314.59 · 13 payments from 7 companies
- 2024$503.98 · 17 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $120.06 | 4 |
| Baxter Healthcare | $41.24 | 2 |
| Vertex Pharmaceuticals Incorporated | $40.34 | 2 |
| Astrazeneca Pharmaceuticals LP | $36.98 | 2 |
| Novo Nordisk Inc | $34.31 | 1 |
What the 2025 payments were for
- Food and Beverage$314.59 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in York
- 1023628138
- 1053570531
- 1164006250
- 1346208345
- 1346475340
- 1457912990
- 1467495929
- 1477174969
- 1487151908
- 1598959918
- 1609250596
- 1649628819
All 188 internal medicine physicians in York · All internal medicine physicians in Pennsylvania