Ahdaysia Williamson-Mcallister, PA-C
NPI 1083435044ActiveIndividual· Physician Assistant· North Bethesda, MD
Physician Assistant (PA-C) in North Bethesda, Maryland, with an NPI issued in October 2024. Enrolled in Medicare as practitioner - physician assistant. Sumitomo Pharma America, Inc. was the largest of 6 companies reporting payments in 2025, $403.83 in all, mostly food and beverage.
Overview
| NPI | 1083435044 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Oct 22, 2024 |
| Last updated in NPPES | Aug 21, 2026 |
| Certified by provider | Aug 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 - Physician Assistant (MD) |
|---|
Industry payments (Open Payments)
- 2025$403.83 · 20 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $148.84 | 11 |
| Mayne Pharma Commercial LLC | $90.83 | 1 |
| Millicent US Inc | $56.99 | 3 |
| Organon LLC | $45.55 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $39.37 | 2 |
What the 2025 payments were for
- Food and Beverage$403.83 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Physician Assistant providers in North Bethesda
- 1679334031