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Fellowship Site Director

Professor of Population Medicine, Harvard Medical School

Professor in the Department of Nutrition, Harvard TH Chan School of Public Health

Emily Oken, MD, MPH, is a physician epidemiologist trained in internal medicine and pediatrics and a Professor of Population Medicine at HMS as well as in the Department of Nutrition at HSPH. She is internationally recognized for investigations related to health promotion, prevention, and population health.  In particular, she focuses on health effects of nutritional and environmental exposures on mothers and children, with a particular focus on the peripartum period. She has been PI of multiple R01 grants, many based in Project Viva, a pre-birth cohort of mothers and children of which she is PI, as well as a UG3/UH3. She also leads an observational study of environmental factors predicting weight change and metabolic risk in the DPP study. She serves on committees to develop maternal nutrition guidelines both nationally and internationally. Her mentorship has been recognized with the Barger Award for Excellence in Mentoring from HMS, a K24 mid-career development grant from NICHD, and the 2019 mentoring award from the Society for Pediatric and Perinatal Research.  She serves on diversity, equity, and inclusion committees locally and nationally, and was recognized with an HMS Harold Amos Faculty Diversity Award.



Fellowship Site Director

Associate Professor of Medicine, Harvard Medical School

Dr. Jason Block is a general internal medicine physician whose primary research interests are neighborhood-level determinants of weight gain and obesity, the evaluation of governmental and institutional policies and other novel interventions to improve diet, and leveraging electronic health record data for observational research and public health surveillance. He graduated from the Tulane University School of Medicine and School of Public Health and Tropical Medicine, and he completed a Robert Wood Johnson Foundation Health and Society Scholar program at Harvard University. He has served as a Senior Advisor in the Assistant Secretary for Health’s Office at the US Department of Health and Human Services, and he is a primary care physician and resident preceptor at Brigham and Women’s Hospital in Boston.


To learn more about our faculty, please visit the department’s web page