Nazanene H. Esfandiari, MD
NPI 1164505061ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Ann Arbor, MI
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Regents of the University of Michigan, practicing in Ann Arbor, Michigan. Their prescriptions cost Medicare Part D more than their services did: $280,575 for 988 claims, against $28,660 paid for services in 2024. Regeneron Healthcare Solutions, Inc. reported $33.91 in payments in 2025, mostly food and beverage. Lists University of Michigan Health System as a hospital affiliation.
Overview
| NPI | 1164505061 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 23, 2006 |
| Last updated in NPPES | Dec 6, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 4301077946 | MI |
| Internal Medicine | 207R00000X | 4301077946 | 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 - Endocrinology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 197 |
|---|---|
| Services billed | 431 across 17 procedure codes |
| Paid by Medicare | $28,660 |
Part D prescriptions in 2024
| Prescriptions (claims) | 988 · 2,490 30-day fills |
|---|---|
| Patients | 174 |
| Total drug cost | $280,575 |
| Generic share | 39% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Endocrinology |
| 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$33.91 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $33.91 | 1 |
What the 2025 payments were for
- Food and Beverage$33.91 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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