Medicare Advantage: Issues, Insights, and Implications for the Future Paul Cotton, Joseph P. Newhouse, PhD, Kevin G. Volpp, MD, PhD, A. Mark Fendrick, MD, Susan Lynne Oesterle, Pat Oungpasuk, Ruchi Aggarwal, Gail Wilensky, PhD, and Kathleen Sebelius Editorial    S-2 D.B. Nash, and A.Y. Schwartz The History, Impact, and Future of the Medicare Advantage Star Ratings System    S-3 P. Cotton Medicare Advantage and Traditional Fee-For-Service Medicare    S-4 J.P. Newhouse Behavioral Economics: Key to Effective Care Management Programs for Patients, Payers, and Providers    S-5 K.G. Volpp Value-Based Insurance Design: A Promising Strategy for Medicare Advantage    S-6 A.M. Fendrick, S.L. Oesterle, P. Oungpasuk, and R. Aggarwal Two Perspectives on the Future of Medicare Advantage    S-7 G. Wilensky and K. Sebelius.