John Santelli is a Professor of Population and Family Health and Pediatrics at Columbia University in New York.  Dr. Santelli has conducted policy-related research on adolescent health including HIV/STD risk behaviors, teen fertility, socioeconomic determinants, prevention programs, and research ethics. 

He is a senior consultant for the Guttmacher Institute, was a member of the 2016 Lancet Commission on Adolescent Health and Wellbeing and is a past President of the Society for Adolescent Health and Medicine.  Prior to Columbia, he worked for 17 years at the Baltimore City Health Department and the U.S. Centers for Disease Control and Prevention.

With the Rakai Health Sciences Program, he has been the principal investigator on five NIH-funded projects on HIV risk among youth, social determinants of health, sexual and reproductive health, orphanhood, and research bioethics.