Thomas E. Gribbin, M.D.
NPI 1639179286ActiveIndividual· Internal Medicine, Hematology & Oncology· Grand Rapids, MI
Internal Medicine, Hematology & Oncology (M.D.) in Grand Rapids, Michigan, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $3,816,722 for 1,846 claims, against $1,214,403 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 25 companies reporting payments in 2025, $1,877 in all, mostly food and beverage.
Overview
| NPI | 1639179286 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 26, 2005 |
| Last updated in NPPES | Mar 13, 2020 |
| Certified by provider | Mar 13, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 4301049910 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 274 |
|---|---|
| Services billed | 51,942 across 149 procedure codes |
| Paid by Medicare | $1,214,403 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,846 · 3,394 30-day fills |
|---|---|
| Patients | 389 |
| Total drug cost | $3,816,722 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical groups
- Center for Physical Rehabilitation and Therapy LPGrand Rapids, MI · 369 clinicians
- Center for Physical Rehabilitation IncGrand Rapids, MI · 357 clinicians
- Cancer and Hematology Centers of Western Mi, P.C.Holland, MI · 110 clinicians
Hospital affiliations
- Corewell Health Big Rapids HospitalBig Rapids, MI
- Corewell Health Gerber HospitalFremont, MI
- Mercy Health Saint Mary'sGrand Rapids, MI
- Spectrum HealthGrand Rapids, MI
Industry payments (Open Payments)
- 2025$1,877 · 86 payments from 25 companies
- 2024$285.47 · 13 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $298.22 | 15 |
| Astrazeneca Pharmaceuticals LP | $234.26 | 7 |
| Merck Sharp & Dohme LLC | $233.62 | 8 |
| Glaxosmithkline, LLC. | $200.84 | 12 |
| Geron Corporation | $111.48 | 4 |
What the 2025 payments were for
- Food and Beverage$1,745 · 83 payments
- Education$131.74 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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