Quick answers
- Which hospitals does Brian K. Ahn work at?
- Medicare's official clinician data lists Brian K. Ahn at 1 hospital: Kaiser Foundation Hospital - Fresno. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brian K. Ahn see patients?
- Medicare's clinician data lists 1 practice location in Fresno, CA. Call before your visit to confirm the address.
- What is Brian K. Ahn's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Brian K. Ahn accept Medicare assignment?
- Yes. Medicare's clinician data says Brian K. 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.
- What is the phone number for Brian K. Ahn?
- (559) 448-4500, as listed in official Medicare / NPI Registry data.
- What is Brian K. Ahn's NPI number?
- 1265849749. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brian K. Ahn works
Medicare's Facility Affiliation Data lists Brian K. Ahn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hospital - FresnoFresno, CA · Acute Care Hospital · CCN 050710
Practice locations
Addresses where Brian K. Ahn is enrolled with Medicare (CMS data updated 2026-10-02).
- 7300 N Fresno StFresno, CA 93720 (559) 448‑4500
Group practices
Medicare enrollment lists Brian K. Ahn as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Fresno
Clinicians with the same Medicare primary specialty in Fresno, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265849749 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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