Which federal agency handles enrollment and public information about Medicare?

The correct agency that handles enrollment and public information about Medicare is the Centers for Medicare and Medicaid Services (CMS). CMS is specifically tasked with overseeing the Medicare program, which includes administration of enrollment, providing information to beneficiaries, and ensuring that the program runs smoothly.

The Social Security Administration (SSA) does play a role in Medicare as it handles aspects of enrollment, particularly for those who qualify for Social Security benefits. However, the primary responsibility for managing Medicare and providing detailed public information falls under CMS. Thus, while the Social Security Administration helps facilitate some of the processes associated with Medicare, it does not have the comprehensive oversight that CMS has.

The Department of Health and Aging and the Department of Homeland Security are not involved in the administration of Medicare. These agencies focus on different areas of public policy and social services that do not overlap with Medicare enrollment or information dissemination.