Michael Brennan, DO
NPI 1689889388ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Saint Clair Shores, MI
Internal Medicine, Endocrinology, Diabetes & Metabolism (DO) in Saint Clair Shores, Michigan, trained at Michigan State University College of Osteopathic Medicine (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $139,873 for 123 claims, against $39,684 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $72,627 in all, mostly speaking and faculty fees.
Overview
| NPI | 1689889388 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 14, 2007 |
| Last updated in NPPES | Aug 21, 2024 |
| Certified by provider | Aug 21, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 5101016966 | MI |
| Pediatrics, Adolescent Medicine | 2080A0000X | 5101016966 | 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 - Endocrinology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 155 |
|---|---|
| Services billed | 479 across 19 procedure codes |
| Paid by Medicare | $39,684 |
Part D prescriptions in 2024
| Prescriptions (claims) | 123 · 248 30-day fills |
|---|---|
| Patients | 34 |
| Total drug cost | $139,873 |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Endocrinology |
Medical group
- Beaumont Medical Group- Specialty ServicesBerkley, MI · 847 clinicians
Hospital affiliations
- Beaumont Hospital - DearbornDearborn, MI
- Beaumont Hospital - Grosse PointeGrosse Pointe, MI
- Beaumont Hospital Royal OakRoyal Oak, MI
- Beaumont Hospital, TroyTroy, MI
Industry payments (Open Payments)
- 2025$72,627 · 49 payments from 5 companies
- 2024$71,315 · 79 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $40,788 | 23 |
| Bayer Healthcare Pharmaceuticals Inc. | $23,035 | 13 |
| Lilly USA, LLC | $5,038 | 8 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $3,750 | 4 |
| Ascensia Diabetes Care US Inc. | $16.05 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$65,692 · 29 payments
- Travel and Lodging$5,619 · 8 payments
- Food and Beverage$1,316 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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