Charles J. Wilmanski, M.D.
NPI 1174610745ActiveIndividual· Internal Medicine· Battle Creek, MI
Internal Medicine (M.D.) in Battle Creek, Michigan, trained at Wayne State University School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $801,571 for 10,778 claims, against $57,893 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 3 companies reporting payments in 2025, $55.65 in all, mostly food and beverage.
Overview
| NPI | 1174610745 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 6, 2006 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Sep 25, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | CW405106 | 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 - Internal Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 272 |
|---|---|
| Services billed | 817 across 17 procedure codes |
| Paid by Medicare | $57,893 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,778 · 20,839 30-day fills |
|---|---|
| Patients | 688 |
| Total drug cost | $801,571 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Bronson Battle Creek HospitalBattle Creek, MI · 193 clinicians
Hospital affiliations
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Methodist HospitalKalamazoo, MI
Other facilities
- Bronson at Home Healthcare ServicesHome health agency · Battle Creek, MI
- Elara CaringHome health agency · Jackson, MI
Industry payments (Open Payments)
- 2025$55.65 · 3 payments from 3 companies
- 2024$868.32 · 52 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $22.08 | 1 |
| Pfizer Inc. | $20.00 | 1 |
| Lundbeck LLC | $13.57 | 1 |
What the 2025 payments were for
- Food and Beverage$55.65 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 59 internal medicine physicians in Battle Creek · All internal medicine physicians in Michigan