Keith Edward Williamson, PA
NPI 1811196207ActiveIndividual· Physician Assistant· Cleveland, TX
Physician Assistant (PA) with Calvary Medical PA, practicing in Cleveland, Texas. Part D covered 1,817 prescriptions written in 2024, 85% of them generic. Ars Pharmaceuticals Operations, Inc. was the largest of 10 companies reporting payments in 2025, $186.59 in all, mostly food and beverage.
Overview
| NPI | 1811196207 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Jul 16, 2007 |
| Last updated in NPPES | Aug 12, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA02083 | TX |
| Physician Assistant, Medical | 363AM0700X | PA02083 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (TX) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 1,817 · 4,309 30-day fills |
|---|---|
| Patients | 323 |
| Total drug cost | $212,103 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Calvary Medical PACleveland, TX · 7 clinicians
Industry payments (Open Payments)
- 2025$186.59 · 15 payments from 10 companies
- 2024$167.85 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ars Pharmaceuticals Operations, Inc. | $31.44 | 2 |
| Corium, LLC | $23.69 | 5 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $21.48 | 1 |
| Neurocrine Biosciences, Inc. | $19.89 | 1 |
| Exact Sciences Corporation | $18.88 | 1 |
What the 2025 payments were for
- Food and Beverage$186.59 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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