Dr. Kellan E. Baker is the Executive Director of Whitman-Walker Institute, an organization in Washington, D.C. that leverages cutting-edge research, policy, and education to advance health equity nationwide, particularly for LGBTQI+ people and people living with HIV. The Institute is affiliated with Whitman-Walker Health, a Federally Qualified Health Center with more than 50 years of service to diverse communities across the D.C. area and beyond. Kellan is a health services researcher, educator, and health policy professional with wide expertise in health equity research and policy, particularly with regard to data collection and research about LGBTQI+ populations. He was an advisor to the National Academies of Sciences, Engineering, and Medicine (NASEM) for the landmark 2020 study on the well-being of sexual and gender diverse populations, and he served as a member of the 2022 NASEM study that developed standards for the collection of sex, gender identity, and sexual orientation data by the National Institutes of Health. Kellan holds appointments as associate faculty in the Department of Health Policy and Management at the George Washington University and the Department of Health Policy and Management at the Johns Hopkins School of Public Health. He received his Ph.D. in health policy and management from Johns Hopkins, where he was a Centennial Scholar and a Health Policy Research Scholar; an M.P.H. in health policy and M.A. in international development from George Washington University; and a B.A. with high honors from Swarthmore College.