Michael J. Neumann, D.O.
NPI 1578549325ActiveIndividual· Internal Medicine, Gastroenterology· Grand Blanc, MI
Internal Medicine, Gastroenterology (D.O.) in Grand Blanc, Michigan, trained at Michigan State University College of Osteopathic Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $413,640 for 1,302 claims, against $55,056 paid for services in 2024. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $994.03 in all, mostly food and beverage.
Overview
| NPI | 1578549325 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Dec 22, 2005 |
| Last updated in NPPES | Jan 5, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 5101010427 | 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 - Gastroenterology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 354 |
|---|---|
| Services billed | 484 across 31 procedure codes |
| Paid by Medicare | $55,056 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,302 · 2,126 30-day fills |
|---|---|
| Patients | 621 |
| Total drug cost | $413,640 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Henry Ford Health Genesys HospitalGrand Blanc, MI · 84 clinicians
- Flint Gastroenterology Associates PCGrand Blanc, MI · 11 clinicians
Hospital affiliation
- Ascension Genesys HospitalGrand Blanc, MI
Industry payments (Open Payments)
- 2025$994.03 · 38 payments from 13 companies
- 2024$1,357 · 73 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $240.02 | 10 |
| Takeda Pharmaceuticals U.S.A., Inc. | $139.36 | 5 |
| Intercept Pharmaceuticals, Inc. | $139.00 | 2 |
| Madrigal Pharmaceuticals | $126.07 | 3 |
| Janssen Biotech, Inc. | $65.23 | 4 |
What the 2025 payments were for
- Food and Beverage$978.10 · 37 payments
- Education$15.93 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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