Dean Ahn, MD
NPI 1821165846ActiveIndividual· Surgery· Bellflower, CA
Surgery (MD) in Bellflower, California, trained at Northwestern University Feinberg Medical School (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $5,948 for 364 claims, against $2,457 paid for services in 2024.
Overview
| NPI | 1821165846 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 29, 2006 |
| Last updated in NPPES | Nov 29, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | G83801 | 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 - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 16 |
|---|---|
| Services billed | 22 across 7 procedure codes |
| Paid by Medicare | $2,457 |
Part D prescriptions in 2024
| Prescriptions (claims) | 364 · 421 30-day fills |
|---|---|
| Patients | 115 |
| Total drug cost | $5,948 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | General Surgery |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - DowneyDowney, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Surgery providers in Bellflower
- 1710138466
- 1255406096
- 1184791014
- 1306913504
- 1386711398
- 1427138262
- 1316910177
- 1174695415
- 1477633212
- 1538236427
- 1851449656
- 1972655330