Quick answers
- Where does Martin T. Ahn see patients?
- Medicare's clinician data lists 2 practice locations, including Norco, CA and Buena Park, CA. Call before your visit to confirm the address.
- What is Martin T. Ahn's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Martin T. Ahn accept Medicare assignment?
- Yes. Medicare's clinician data says Martin T. Ahn accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Martin T. Ahn offer telehealth?
- Medicare's clinician data says Martin T. Ahn offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Martin T. Ahn?
- (951) 279-4900, as listed in official Medicare / NPI Registry data.
- What is Martin T. Ahn's NPI number?
- 1649342171. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Martin T. Ahn is enrolled with Medicare (CMS data updated 2026-10-02).
- 1781 3rd StNorco, CA 92860 (951) 279‑4900
- 6301 Beach Blvd, Suite 109Buena Park, CA 90621 (714) 525‑9900
Specialties
- Family Practiceprimary
Other family doctors in Norco
Clinicians with the same Medicare primary specialty in Norco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1649342171 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians