Internal Medicine
SANG HOON AHN M.D.
Identity confirmed via CMS NPPES · September 30, 2026 · A directory match is not a coverage approval.
Is this your practice? This listing was imported from public provider identity data (CMS NPPES) and has not yet been claimed. Claim this listing to confirm the practice details. Plan acceptance stays unpublished until the practice reports it.
Public record
NPI 1568581759 · enumerated 2007-03-28 · record updated 2026-02-18. Source: CMS NPPES. A listing is not a TRICARE network approval.
NPPES recordGoogle Maps Apple Maps OpenStreetMap
Addresses and phones
- Mailing address 1520 HOLLYDALE DR, FULLERTON, CA, 92831-1115 (213) 245-0788 Google Maps Apple Maps OpenStreetMap
- Practice location 1950 SUNNY CREST DR STE 2800, FULLERTON, CA, 92835-3641 (657) 888-9919 Fax (657) 888-9941 Google Maps Apple Maps OpenStreetMap
Specialties
- Internal Medicine 207R00000X · Primary · License A95562 CA
- Internal Medicine, Medical Oncology 207RX0202X · License A95562 CA
In this directory
Locations and evidence
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Practice location
FULLERTON, CA, 928353641
Accepting new patientsNot reportedCMS NPPES · September 30, 2026
Plan acceptance
- No published plan acceptance yet. Confirm directly with the practice, or claim this listing if it's yours.