Hyong Un


Hyong Un, M.D. is the Chief Psychiatric Officer for Aetna and Head of Aetna Employee Assistance Program. Dr. Un has been with Aetna since January 2002. In his role, Dr. Un supports the development of behavioral health care strategy as well as the development of innovative behavioral health disease and care management programs that promote overall optimal health and integration of behavioral health with medical management. Dr. Un also has strategic, programmatic, operational and financial oversight of Resources for Living, Aetna’s Employee Assistance Program. Prior to joining Aetna in 2002, Dr. Un was the Psychiatrist-in-Chief of Friends Hospital, the nations’ first private psychiatric hospital and Chief Medical Officer for Penn-Friends Behavioral Health System of the University of Pennsylvania. Dr. Un’s clinical interests and expertise include behavioral and psychosocial determinants of overall health and productivity as well as fields of neuropsychiatry and psychopharmacology. Dr. Un serves on numerous national committees including advisory board to the Director of NIMH, Workplace Mental Health Board of the APA, and National Centers of Excellence for Depression. He is a member of the American Psychiatric Association. Dr. Un graduated from the University of Pennsylvania’s School of Medicine in 1981 and completed his residency at the Hospital of the University of Pennsylvania in 1985.