Anna Ahn, M.D.
NPI 1700105533ActiveIndividual· Internal Medicine· Stony Brook, NY
Internal Medicine (M.D.) in Stony Brook, New York, trained at New York Medical College (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $1,429,471 for 3,248 claims, against $112,011 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 14 companies reporting payments in 2025, $659.61 in all, mostly food and beverage.
Overview
| NPI | 1700105533 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 18, 2010 |
| Last updated in NPPES | Aug 12, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | D75970 | MD |
| Internal Medicine | 207R00000X | 249976 | NY |
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 - Pulmonary Disease (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 657 |
|---|---|
| Services billed | 1,598 across 28 procedure codes |
| Paid by Medicare | $112,011 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,248 · 4,356 30-day fills |
|---|---|
| Patients | 575 |
| Total drug cost | $1,429,471 |
| Generic share | 39% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- University of Maryland Community Medical Group IncEaston, MD · 477 clinicians
Hospital affiliations
- University of MD Shore Medical Center at EastonEaston, MD
- University of MD Shore Medical Ctr at ChestertownChestertown, MD
Industry payments (Open Payments)
- 2025$659.61 · 36 payments from 14 companies
- 2024$787.65 · 32 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $138.02 | 16 |
| Sanofi-Aventis U.S. LLC | $99.95 | 1 |
| Insmed, Inc. | $80.78 | 4 |
| Astrazeneca Pharmaceuticals LP | $64.03 | 3 |
| Genzyme Corporation | $61.76 | 3 |
What the 2025 payments were for
- Food and Beverage$559.66 · 35 payments
- Education$99.95 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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