Sari Reisner (he/him/his) is Director of Transgender Research in the Section of Men’s Health, Aging and Metabolism, in the Division of Endocrinology, Diabetes and Hypertension at Brigham and Women's Hospital. Dr. Reisner is also Director of Transgender Health Research at The Fenway Institute at Fenway Health, Assistant Professor in the Department of Medicine at Harvard Medical School, and Assistant Professor in the Department of Epidemiology at Harvard T.H. Chan School of Public Health. Trained as a social and psychiatric epidemiologist, his research addresses health disparities in sexual and gender minority (SGM) populations, with specialization in transgender health and in adolescent and young adult health. Dr. Reisner is an investigator of multiple LGBTQ health studies funded domestically and internationally, including a Patient-Centered Outcomes Research Institute (PCORI) project to enroll and follow a cohort of 4,500 transgender patients in Boston and New York City to prospectively assess the impact of medical gender affirmation on physical and mental health outcomes. He has co-authored more than 200 peer-reviewed journal articles in LGBTQ health. In 2016, he was profiled in The Lancet as a global leader in transgender health, and was honored as a member of the 2015 Trans100 List which celebrates work “by” and “for” transgender people, in recognition of his contributions in transgender health.