Thomas M. Enzler, MD
NPI 1811145535ActiveIndividual· Internal Medicine, Medical Oncology· Ann Arbor, MI
Internal Medicine, Medical Oncology (MD) with Regents of the University of Michigan, practicing in Ann Arbor, Michigan. Their prescriptions cost Medicare Part D more than their services did: $410,758 for 987 claims, against $38,792 paid for services in 2024. Beone Medicines USA, Inc. was the largest of 4 companies reporting payments in 2025, $485.79 in all, mostly food and beverage. Lists University of Michigan Health System as a hospital affiliation.
Overview
| NPI | 1811145535 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 6, 2008 |
| Last updated in NPPES | Feb 5, 2020 |
| Certified by provider | Feb 5, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 4301116202 | MI |
| Internal Medicine | 207R00000X | 4301116202 | 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 - Medical Oncology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 159 |
|---|---|
| Services billed | 588 across 12 procedure codes |
| Paid by Medicare | $38,792 |
Part D prescriptions in 2024
| Prescriptions (claims) | 987 · 1,480 30-day fills |
|---|---|
| Patients | 143 |
| Total drug cost | $410,758 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
Hospital affiliation
- University of Michigan Health SystemAnn Arbor, MI
Industry payments (Open Payments)
- 2025$485.79 · 6 payments from 4 companies
- 2024$140.76 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Beone Medicines USA, Inc. | $156.98 | 1 |
| Caris Mpi, Inc. | $141.23 | 1 |
| Astrazeneca Pharmaceuticals LP | $113.58 | 2 |
| Astrazeneca Uk Limited | $74.00 | 2 |
What the 2025 payments were for
- Food and Beverage$485.79 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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