Eric James Wielhouwer, D.O.
NPI 1790819449ActiveIndividual· Internal Medicine· Grandville, MI
Internal Medicine (D.O.) in Grandville, Michigan, trained at Midwestern University, Chicago College of Osteopathic Med (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $270,317 for 3,564 claims, against $15,478 paid for services in 2024. Novo Nordisk Inc reported $35.08 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1790819449 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Mar 15, 2007 |
| Last updated in NPPES | Feb 22, 2021 |
| Certified by provider | Feb 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 5101015494 | MI |
| Pediatrics | 208000000X | 5101015494 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 60 |
|---|---|
| Services billed | 342 across 30 procedure codes |
| Paid by Medicare | $15,478 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,564 · 8,904 30-day fills |
|---|---|
| Patients | 390 |
| Total drug cost | $270,317 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Midwestern University, Chicago College of Osteopathic Med |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Spectrum Health Primary Care PartnersGrand Rapids, MI · 2,294 clinicians
Hospital affiliations
- Corewell Health Pennock HospitalHastings, MI
- Spectrum HealthGrand Rapids, MI
Industry payments (Open Payments)
- 2025$35.08 · 2 payments from 1 company
- 2024$50.97 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $35.08 | 2 |
What the 2025 payments were for
- Food and Beverage$35.08 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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