Lynne B. Ahn, MD
NPI 1144269143ActiveIndividual· Internal Medicine, Gastroenterology· Framingham, MA
Internal Medicine, Gastroenterology (MD) in Framingham, Massachusetts, trained at George Washington University School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $383,707 for 193 claims, against $13,417 paid for services in 2024. Alnylam Pharmaceuticals Inc. reported $21.61 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1144269143 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 5, 2006 |
| Last updated in NPPES | Jan 3, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 212256 | MA |
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 - Gastroenterology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 81 |
|---|---|
| Services billed | 125 across 21 procedure codes |
| Paid by Medicare | $13,417 |
Part D prescriptions in 2024
| Prescriptions (claims) | 193 · 301 30-day fills |
|---|---|
| Patients | 123 |
| Total drug cost | $383,707 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Gastroenterology |
Medical group
- Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr IncBoston, MA · 1,740 clinicians
Hospital affiliation
- Beth Israel Deaconess Medical CenterBoston, MA
Industry payments (Open Payments)
- 2025$21.61 · 1 payment from 1 company
- 2024$50.52 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alnylam Pharmaceuticals Inc. | $21.61 | 1 |
What the 2025 payments were for
- Food and Beverage$21.61 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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