Julia Marcus

Julia Marcus, PhD, MPH is an infectious disease epidemiologist and Assistant Professor in the Department of Population Medicine at Harvard Medical School and Harvard Pilgrim Health Care Institute, and Adjunct Faculty at The Fenway Institute. Her primary research focus is improving the implementation of preexposure prophylaxis (PrEP) to prevent new HIV infections and promote sexual health. Her studies have leveraged data from electronic health records (EHRs) to identify patients who may benefit from PrEP, characterize PrEP uptake and continuation, and document clinical outcomes among PrEP users in real-world healthcare settings. She is also co-leading implementation projects to evaluate whether EHR-based predictive analytics and clinical decision support can improve PrEP prescribing in diverse healthcare settings.  

Dr. Marcus received her doctoral degree in epidemiology from the University of California, Berkeley, and completed a postdoctoral fellowship at the Kaiser Permanente Division of Research.

Staff Assistant

Chamaine Washington


Phone: (617) 867-4210


Assistant Professor

Work Phone
Mailing Address

Harvard Medical School

Department of Population Medicine

401 Park Drive, Suite 401 East

Boston, MA 02215