Core Insights - March 31 marks the end of the Medicare Advantage Open Enrollment period, which runs from January 1 to March 31, allowing current enrollees to make changes to their plans [3][6] - Participants can switch to a different Medicare Advantage plan or revert to original Medicare, with specific rules regarding prescription drug coverage [3][7] - Approximately 90% of Medicare Advantage Plans in 2025 include prescription coverage, making the exception for those with Medicare Part D coverage applicable to a small number of individuals [4] Actions for Medicare Advantage Participants - Review past insurance usage and anticipated medical needs for the upcoming year before the March 31 deadline [5][10] - Utilize the Medicare Plan Finder or contact 1-800-MEDICARE for assistance in exploring options and making changes [8] - Confirm that the current Medicare Advantage plan meets individual needs to avoid potential out-of-pocket expenses, as changes will not be possible until October unless qualifying for a special enrollment period [9]