Betty S. Ahn, MD
NPI 1902862089ActiveIndividual· Emergency Medicine· Pasadena, CA
Emergency Medicine (MD) in Pasadena, California, trained at University of Southern California Keck School of Medicine (class of 2000). 476 Medicare patients in 2024, $70,261 paid; nearly all of their 539 Part D prescriptions were generic (94%).
Overview
| NPI | 1902862089 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 26, 2006 |
| Last updated in NPPES | Jun 5, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A77991 | CA |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 476 |
|---|---|
| Services billed | 712 across 22 procedure codes |
| Paid by Medicare | $70,261 |
Part D prescriptions in 2024
| Prescriptions (claims) | 539 · 541 30-day fills |
|---|---|
| Patients | 300 |
| Total drug cost | $3,704 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Emergency Medicine |
Medical group
- Mission Viejo Emergency Medical Associates, Inc.Marina Del Rey, CA · 30 clinicians
Hospital affiliation
- Cedar-Sinai Marina del Rey HospitalMarina Del Rey, CA
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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