Erin Michelle Diviney Chun, MD
NPI 1215120738ActiveIndividual· Internal Medicine, Geriatric Medicine· Ann Arbor, MI
Internal Medicine, Geriatric Medicine (MD) in Ann Arbor, Michigan, licensed in MI, with an NPI issued in August 2007. Their prescriptions cost Medicare Part D more than their services did: $95,712 for 1,561 claims, against $21,946 paid for services in 2024.
Overview
| NPI | 1215120738 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 20, 2007 |
| Last updated in NPPES | May 24, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | 4301086375 | MI |
| Family Medicine | 207Q00000X | 4301086375 | MI |
| Family Medicine, Geriatric Medicine | 207QG0300X | 4301086375 | MI |
| Internal Medicine | 207R00000X | 4301086375 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Geriatric Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 137 |
|---|---|
| Services billed | 199 across 6 procedure codes |
| Paid by Medicare | $21,946 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,561 · 1,588 30-day fills |
|---|---|
| Patients | 107 |
| Total drug cost | $95,712 |
| Generic share | 86% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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