Eric Thomas Walchak, D.O.
NPI 1962493395ActiveIndividual· Internal Medicine, Cardiovascular Disease· Wyoming, MI
Internal Medicine, Cardiovascular Disease (D.O.) in Wyoming, Michigan, trained at Michigan State University College of Human Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $660,921 for 4,050 claims, against $55,044 paid for services in 2024. Abiomed was the largest of 7 companies reporting payments in 2025, $461.89 in all, mostly food and beverage.
Overview
| NPI | 1962493395 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Nov 3, 2005 |
| Last updated in NPPES | Oct 17, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 5101013546 | 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 - Cardiovascular Disease (Cardiology) (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 451 |
|---|---|
| Services billed | 1,064 across 66 procedure codes |
| Paid by Medicare | $55,044 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,050 · 10,079 30-day fills |
|---|---|
| Patients | 718 |
| Total drug cost | $660,921 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Michigan State University College of Human Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Metropolitan HospitalWyoming, MI · 415 clinicians
Hospital affiliations
- Corewell Health Big Rapids HospitalBig Rapids, MI
- Mercy Health Saint Mary'sGrand Rapids, MI
- Spectrum HealthGrand Rapids, MI
- University of Michigan Health - WestWyoming, MI
Industry payments (Open Payments)
- 2025$461.89 · 16 payments from 7 companies
- 2024$387.86 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $271.13 | 7 |
| Medtronic, Inc. | $48.88 | 3 |
| Pfizer Inc. | $38.02 | 2 |
| Boston Scientific Corporation | $30.91 | 1 |
| Shockwave Medical, Inc | $26.90 | 1 |
What the 2025 payments were for
- Food and Beverage$461.89 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 cardiologists in Wyoming · All cardiologists in Michigan