Dr. Chung is a Professor of Medicine and directs the Treatment, Research, and Expert Education (TREE) program and holds an Affiliate Professor position in the Departments of Global Health and Medicine at the University of Washington in Seattle, USA. He is also Chair of the Department of Medicine at the Aga Khan University Medical College in Nairobi, Kenya. Born, raised, and educated in the United States of America (USA), he obtained a Bachelor of Arts (BA) degree from Oberlin College in Biology and English in 1990. He received his Doctor of Medicine (MD) degree from the University of Chicago Pritzker School of Medicine and Master in Public Health (MPH) degree from the Harvard T.H. Chan School of Public Health in 1998. Prof. Chung trained in Internal Medicine at the Beth Israel Deaconess Medical Center (BIDMC), a Harvard Medical School Teaching Hospital, and completed a fellowship in Infectious Diseases at the University of Washington in 2005. He is board certified in Internal Medicine and Infectious Diseases with the American Board of Internal Medicine and is a Fellow of the Royal College of Physicians of Edinburgh (FRCP).

Dr. Chung specializes in HIV care and treatment and has been practicing medicine in both Kenya and the USA for nearly 20 years. In Kenya, he helped establish one of the largest single-site antiretroviral (ART) treatment centers in the country at the Coptic Hope Center for Infectious Diseases and practiced at Kenyatta National Hospital in Nairobi. In the USA, he has been an attending physician in Infectious Diseases at the Harborview Medical Center and the University of Washington Medical Center in Seattle. Prof. Chung has led clinical trials in Kenya examining adherence to ART, testing for pre-treatment drug resistance (PDR), and cervical cancer screening and treatment among HIV-infected women.