Holly L. Knowles, PA-C
NPI 1073549044ActiveIndividual· Physician Assistant· Muskegon, MI
Physician Assistant (PA-C) with Mercy Specialty Services, practicing in Muskegon, Michigan. Their prescriptions cost Medicare Part D more than their services did: $7,284 for 116 claims, against $3,325 paid for services in 2024. Vertex Pharmaceuticals Incorporated was the largest of 3 companies reporting payments in 2025, $55.90 in all, mostly food and beverage. Lists Trinity Health Muskegon Hospital as a hospital affiliation.
Overview
| NPI | 1073549044 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jun 23, 2006 |
| Last updated in NPPES | Apr 25, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 5601004732 | MI |
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 | 39 |
|---|---|
| Services billed | 60 across 12 procedure codes |
| Paid by Medicare | $3,325 |
Part D prescriptions in 2024
| Prescriptions (claims) | 116 · 136 30-day fills |
|---|---|
| Patients | 50 |
| Total drug cost | $7,284 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Mercy Specialty ServicesMuskegon, MI · 90 clinicians
Hospital affiliation
- Trinity Health Muskegon HospitalMuskegon, MI
Industry payments (Open Payments)
- 2025$55.90 · 3 payments from 3 companies
- 2024$109.02 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $20.52 | 1 |
| Inspire Medical Systems, Inc. | $17.86 | 1 |
| E.R. Squibb & Sons, L.L.C. | $17.52 | 1 |
What the 2025 payments were for
- Food and Beverage$55.90 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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