Michelle D. Williams, PA - C
NPI 1639407018ActiveIndividual· Physician Assistant· Beaver, PA
Physician Assistant (PA - C) with Advanced Dermatology of Pennsylvania, PC, practicing in Beaver, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $113,242 for 1,015 claims, against $36,292 paid for services in 2024. Abbvie Inc. was the largest of 19 companies reporting payments in 2025, $1,680 in all, mostly food and beverage. Lists Heritage Valley Beaver as a hospital affiliation.
Overview
| NPI | 1639407018 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA - C |
| Sole proprietor | No |
| NPI issued | Nov 24, 2009 |
| Last updated in NPPES | Oct 1, 2024 |
| Certified by provider | Sep 30, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
| Physician Assistant, Medical | 363AM0700X | MA054042 | 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 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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 422 |
|---|---|
| Services billed | 769 across 39 procedure codes |
| Paid by Medicare | $36,292 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,015 · 1,081 30-day fills |
|---|---|
| Patients | 404 |
| Total drug cost | $113,242 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Advanced Dermatology of Pennsylvania, PCWhite Oak, PA · 28 clinicians
Hospital affiliation
- Heritage Valley BeaverBeaver, PA
Industry payments (Open Payments)
- 2025$1,680 · 83 payments from 19 companies
- 2024$2,456 · 148 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $220.23 | 18 |
| Galderma Laboratories, L.P. | $204.18 | 7 |
| Janssen Biotech, Inc. | $190.67 | 11 |
| Regeneron Healthcare Solutions, Inc. | $168.60 | 4 |
| Genzyme Corporation | $159.48 | 7 |
What the 2025 payments were for
- Food and Beverage$1,594 · 82 payments
- Education$85.47 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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