Dr. Ahn is a board certified internist. Born in New York City, he grew up on Long Island. He received his bachelor of arts from Brown University in Human Biology, and his medical degree from Brown Medical School. He went on to complete his residency training in Primary Care Internal Medicine at NYU School of Medicine.

Dr. Ahn is a faculty member of the NYU Primary Care Residency Program and a clinical instructor at NYU School of Medicine. His interests include preventive medicine and musculoskeletal disease. He has been providing Primary Care services to his patients in Downtown Manhattan since 2012.