Dr. Timothy Mastro is Group Director for Global Health, Population & Nutrition at FHI 360, Durham, North Carolina, USA. He is also Adjunct Professor of Epidemiology in the Gillings School of Global Public Health, University of North Carolina at Chapel Hill. Dr. Mastro oversees FHI 360’s health, population and nutrition research and program science conducted in the United States and through FHI 360’s offices in 50 countries around the world. Dr. Mastro joined FHI in 2008 following 20 years at the US Centers for Disease Control and Prevention (CDC) in Atlanta. At CDC his work addressed HIV prevention research and programs in the United States and in 20 countries in Asia, Africa and Latin America. During 1993-2000, he served in Bangkok as Director of the CDC HIV/AIDS collaboration with the Thailand Ministry of Public. Dr. Mastro is author or co-author of more than 160 published articles and book chapters and has served on several committees for the World Health Organization, UNAIDS, PEPFAR and the US National Institutes of Health. Dr. Mastro trained in internal medicine in New York City at Metropolitan Hospital and Mount Sinai School of Medicine. He studied at the London School of Hygiene and Tropical Medicine and received a DTM&H from the Royal College of Physicians of London. He is a fellow of the American College of Physicians.