William Donald Clark, D.O.
NPI 1184987711ActiveIndividual· Family Medicine· Rockford, MI
Family Medicine (D.O.) in Rockford, Michigan, trained at Michigan State University College of Osteopathic Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $301,867 for 3,100 claims, against $32,364 paid for services in 2024.
Overview
| NPI | 1184987711 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 19, 2012 |
| Last updated in NPPES | Jan 3, 2024 |
| Certified by provider | Jan 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 5101020020 | 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 - Family Practice (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 65 |
|---|---|
| Services billed | 528 across 54 procedure codes |
| Paid by Medicare | $32,364 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,100 · 7,127 30-day fills |
|---|---|
| Patients | 350 |
| Total drug cost | $301,867 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Family Practice |
Medical groups
- Spectrum Health Primary Care PartnersGrand Rapids, MI · 2,294 clinicians
- Spectrum Health UnitedGreenville, MI · 92 clinicians
Hospital affiliations
- Spectrum HealthGrand Rapids, MI
- Spectrum Health United HospitalGreenville, MI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 family medicine physicians in Rockford · All family medicine physicians in Michigan