Born and raised in Hayward, Dr. Jason Fung is an alumnus of Head-Royce School in Oakland, Yale University, and the University of Rochester School of Medicine. He completed his medical internship at Yale-New Haven Hospital and his dermatology residency training at Washington University in St. Louis. Dr. Fung returned to the East Bay in 2004 and has been in private practice ever since.

Dr. Fung is active in the teledermatology space. After serving for four years as a teledermatologist with Spruce Dermatology Clinic in San Francisco, Dr. Fung now works in a similar capacity for Keeps (New York-based male pattern hair loss company) and for TeleMed2U (California-based telemedicine company). He also sits on the physician advisory board for Seisson (Korea-based baby skin care company).