Theodore L. Fellenbaum, M.D.
NPI 1366457848ActiveIndividual· Obstetrics & Gynecology· Flint, MI
Obstetrics & Gynecology (M.D.) in Flint, Michigan, trained at Northwestern University Feinberg Medical School (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $77,296 for 620 claims, against $24,733 paid for services in 2024. Mayne Pharma Commercial LLC was the largest of 10 companies reporting payments in 2025, $538.88 in all, mostly food and beverage.
Overview
| NPI | 1366457848 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | Jul 12, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 4301056913 | 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 - Obstetrics/Gynecology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 106 |
|---|---|
| Services billed | 382 across 23 procedure codes |
| Paid by Medicare | $24,733 |
Part D prescriptions in 2024
| Prescriptions (claims) | 620 · 1,064 30-day fills |
|---|---|
| Patients | 169 |
| Total drug cost | $77,296 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Obstetrics/Gynecology |
Industry payments (Open Payments)
- 2025$538.88 · 29 payments from 10 companies
- 2024$1,643 · 43 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $195.20 | 16 |
| Lilly USA, LLC | $95.98 | 2 |
| Channel Medsystems, Inc. | $54.15 | 1 |
| Sumitomo Pharma America, Inc. | $43.56 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $34.85 | 2 |
What the 2025 payments were for
- Food and Beverage$538.88 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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