Jason Ahn, M.D., M.P.A.
NPI 1851667299ActiveIndividual· Emergency Medicine· Boston, MA
Emergency Medicine (M.D., M.P.A.) in Boston, Massachusetts, trained at Harvard Medical School (class of 2012). 374 Medicare patients in 2024, $68,922 paid; nearly all of their 93 Part D prescriptions were generic (98%). Siemens Medical Solutions USA, Inc. reported $13.47 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1851667299 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., M.P.A. |
| Sole proprietor | No |
| NPI issued | Mar 30, 2012 |
| Last updated in NPPES | Jan 9, 2020 |
| Certified by provider | Jan 9, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A141998 | CA |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 374 |
|---|---|
| Services billed | 693 across 20 procedure codes |
| Paid by Medicare | $68,922 |
Part D prescriptions in 2024
| Prescriptions (claims) | 93 · 93 30-day fills |
|---|---|
| Patients | 62 |
| Total drug cost | $704.08 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Emergency Medicine |
Medical group
- Northbay Physicians Surgery Center, LLCFairfield, CA · 324 clinicians
Hospital affiliation
- Northbay Medical CenterFairfield, CA
Industry payments (Open Payments)
- 2024$13.47 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | $13.47 | 1 |
What the 2024 payments were for
- Food and Beverage$13.47 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 558 emergency medicine physicians in Boston · All emergency medicine physicians in Massachusetts