Michael Gregory Williams, MD
NPI 1578561304ActiveIndividual· General Practice· Southfield, MI
General Practice (MD) in Southfield, Michigan, trained at University of Michigan Medical School (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $62,699 for 1,915 claims, against $12,007 paid for services in 2024.
Overview
| NPI | 1578561304 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 14, 2005 |
| Last updated in NPPES | Jan 18, 2026 |
| Certified by provider | Jan 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | 4301049187 | MI |
| Emergency Medicine | 207P00000X | MW049187 | 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 - Emergency Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 54 |
|---|---|
| Services billed | 172 across 3 procedure codes |
| Paid by Medicare | $12,007 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,915 · 1,929 30-day fills |
|---|---|
| Patients | 152 |
| Total drug cost | $62,699 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Emergency Medicine |
Medical group
- Theoria MedicalEast Moline, IL · 284 clinicians
Other facilities
- Corewell Health Hospice & Palliative Care - West MichiganHospice · Grand Rapids, MI
- Medilodge of Grand RapidsNursing home · Grand Rapids, 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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