Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Sang Hoon Ahn, MD

Individual provider Internal Medicine Physician · NPI 1568581759

Sang Hoon Ahn, MD is a Hematology/Oncology in Fullerton, California. Qualified in 1994, 32 years ago. Practices with USC Care Medical Group Inc, a 1,371-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
32
Licensed in
CA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1950 Sunny Crest Dr Ste 2800
Fullerton, CA 92835-3641
Phone: (657) 888-9919
Fax: (657) 888-9941
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 5832 Beach Blvd Unit 201, Buena Park, CA 90621-5501 — (714) 522-0908
  • 500 S Virgil Ave, Los Angeles, CA 90020-1446 — (213) 388-0908

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A95562 (CA)
Medical Oncology Physician Taxonomy 207RX0202X · Licence A95562 (CA)

Record details

NPI number1568581759
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 28, 2007
Last updated in NPPESFebruary 18, 2026
Certification dateFebruary 18, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesMEDICAL ONCOLOGY
Medical schoolOTHER
Graduated 1994 (32 years in practice)
Group practice Usc Care Medical Group Inc — 1371 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations6 on file with Medicare

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