Tricia Neuman, Vice President and Director of the Medicare Policy Project, testified on behalf of herself and Thomas Rice, Ph.D., of UCLA’s School of Public Health, before the House Ways and Means Subcommittee on Health on cost-sharing requirements under Medicare and supplemental Medigap policies. The statement reviews Medicare beneficiaries’ current cost-sharing responsibilities, the evidence on the impact of out-of-pocket costs on health-care utilization, and the implications for proposals that would modify Medicare’s cost-sharing structure.