HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CA

JEFFREY YOONJAE AHN, MD

HEMATOLOGY/ONCOLOGY

Graduated: 2017

Offers telehealth

NPI: 1902331630

Practice Locations (1)

UC REGENTS

101 THE CITY DR S

ORANGE, CA 928683201

7144567002

Source: CMS National Downloadable File, September 2026.

JEFFREY AHN, MD | HealthCareAtlasUSA