Giselle Casillas, M.P.P., is a policy analyst for the Program on Medicare Policy at the Kaiser Family Foundation. Previously, she was a senior research assistant in the Department of Health Policy at the The George Washington University, where she contributed to research on Medicare Advantage payment policy. Ms. Casillas has an M.P.P. in Health Economics and Program Evaluation from The George Washington University and a B.A. in Health: Science, Society and Policy, and International and Global Studies from Brandeis University.