Jason K. An, M.D.
NPI 1851533905ActiveIndividual· Emergency Medicine· Riverside, CA
Emergency Medicine (M.D.) in Riverside, California, licensed in CA, with an NPI issued in April 2009. Mostly services rather than prescriptions: Medicare paid $12,493 for 89 patients in 2024, with only 33 Part D claims.
Overview
| NPI | 1851533905 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 2, 2009 |
| Last updated in NPPES | Feb 6, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A113121 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 89 |
|---|---|
| Services billed | 138 across 8 procedure codes |
| Paid by Medicare | $12,493 |
Part D prescriptions in 2024
| Prescriptions (claims) | 33 · 35 30-day fills |
|---|---|
| Patients | 28 |
| Total drug cost | $181.11 |
| Generic share | 88% 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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