Dr. Bilal Khan is a mathematician and computer scientist with expertise in modeling dynamic systems related to substance use. Dr. Khan is presently Professor of Data Science with joint appointments in the Departments of Global/Population Health and the Department of Computer Science at Lehigh University. Prior to 2022, he was a Professor of Sociology and Computer Science at the University of Nebraska-Lincoln. Previously, he has had a leadership role on large field projects involving collection and mathematical modeling of fine-grained behavioral data from at-risk populations: alcohol use and relapse (R21AA029231); people who inject drugs in rural Puerto Rico (R01DA037117); meth using populations in New York City (R21DA024357; NIJ 2007-IJ-CX-0110); health risks of commercially sexually exploited children (DOJ 2005-LX-FX-0001); commercial sex workers (NIJ 2010-IJ-CX-1674); and indigenous communities in Alaska (R34MH096884) and Labrador (NSF ARC-0908155). His prior work has resulted in developing new technologies for cellphone-based data collection (NSF SMA-1338485 and R01GM118427), platforms for simulation (RC1DA028476), and forecasting (R01DA034637) in the context of substance use. His research applies mathematical and computational expertise to social and behavioral science in the context of public health.