Jonathon Ahn, MD
NPI 1053803882ActiveIndividual· Anesthesiology· Fullerton, CA
Anesthesiology (MD) in Fullerton, California, trained at Loma Linda University School of Medicine (class of 2018). Medicare paid $32,820 for services to 170 patients in 2024. Merck Sharp & Dohme LLC reported $19.42 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1053803882 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 6, 2018 |
| Last updated in NPPES | Jun 15, 2023 |
| Certified by provider | Mar 31, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | A164226 | 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 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 - Anesthesiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 170 |
|---|---|
| Services billed | 216 across 66 procedure codes |
| Paid by Medicare | $32,820 |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Anesthesiology |
Medical group
- Allied Anesthesia Medical Group IncOrange, CA · 191 clinicians
Hospital affiliation
- Providence St. Jude Medical CenterFullerton, CA
Industry payments (Open Payments)
- 2025$19.42 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $19.42 | 1 |
What the 2025 payments were for
- Food and Beverage$19.42 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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