Market and Beneficiary Characteristics Associated With Enrollment in Medicare Managed Care Plans and Fee-for-Service

Background: Risk selection in the Medicare managed care program (“Medicare Advantage”) is an important policy concern. Past research has shown that Medicare managed care plans tend to attract healthier beneficiaries and that market characteristics such as managed care penetration may also affect risk selection. Objectives: To assess whether patient enrollment in Medicare managed care (MMC) or traditional fee-for-service (FFS) Medicare is related...