Olivia Williamson, PA-C
NPI 1477338184ActiveIndividual· Physician Assistant· Sebewaing, MI
Physician Assistant (PA-C) with Brent M Boyce MD PC, practicing in Sebewaing, Michigan. 163 Medicare patients in 2024, $10,064 paid; nearly all of their 184 Part D prescriptions were generic (96%). Janssen Biotech, Inc. was the largest of 19 companies reporting payments in 2025, $2,058 in all, mostly food and beverage. Lists Covenant Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1477338184 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Aug 30, 2023 |
| Last updated in NPPES | Sep 15, 2024 |
| Certified by provider | Sep 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| 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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 163 |
|---|---|
| Services billed | 171 across 9 procedure codes |
| Paid by Medicare | $10,064 |
Part D prescriptions in 2024
| Prescriptions (claims) | 184 · 184 30-day fills |
|---|---|
| Patients | 141 |
| Total drug cost | $1,905 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Brent M Boyce MD PCSebewaing, MI · 9 clinicians
Hospital affiliations
- Covenant Medical CenterSaginaw, MI
- McLaren Bay RegionBay City, MI
- Scheurer HospitalPigeon, MI
Industry payments (Open Payments)
- 2025$2,058 · 103 payments from 19 companies
- 2024$843.54 · 30 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $469.24 | 15 |
| Abbvie Inc. | $335.13 | 28 |
| Ucb, Inc. | $234.79 | 11 |
| Genzyme Corporation | $197.87 | 9 |
| Sun Pharmaceutical Industries Inc. | $190.13 | 12 |
What the 2025 payments were for
- Food and Beverage$1,774 · 100 payments
- Education$283.98 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records