Tisamarie Sherry is an associate physician policy researcher at the RAND Corporation. Her research investigates strategies to improve the health, social, and economic outcomes of vulnerable populations, with a special focus on adults with mental illness and substance use disorders. She is interested in studying the impact of health delivery system innovations – including payment reform and behavioral health integration – on underserved populations, and the role of safety net programs such as Medicaid and disability insurance in addressing health disparities. Prior to joining RAND, Sherry worked with the Office of the Assistant Secretary for Planning and Evaluation in the U.S. Department of Health and Human Services, and with the Centers for Disease Control's Global AIDS Program. She is also a practicing primary care physician at Brigham and Women's Hospital (BWH), and an instructor at Harvard Medical School. Sherry obtained her A.B. in molecular biology and public policy from Princeton University, her M.D. from Harvard Medical School, and Ph.D. in Health Policy from Harvard University. She completed residency training in internal medicine at BWH.