The Medicare+Choice program is in crisis. Enrollment is falling, plans are withdrawing, provider networks are increasingly unstable, and plans are reducing benefits. Previous phases of this project have conducted intensive case studies of local Medicare+Choice markets and analyzed national data and policies to assess how the program is faring, describe its shortcomings, and draw lessons for Medicare reform proposals that rely on the Medicare+Choice model of promoting private competition. In this final phase, cities where the program has been relatively stable will be studied and conditions in cities previously studied will be updated to determine if markets are responding to changes in program payments and policies. Recommendations will aid policymakers in determining whether to end the program or attempt to stabilize and expand it, and in developing proposals for long-term Medicare reform. http://www.gwu.edu