Medicare open enrollment – also known as Medicare’s annual election period – runs from October 15 through December 7 each year. During this annual window, Medicare plan enrollees can reevaluate their coverage and make changes or purchase new policies if they want to do so. During the Medicare open enrollment period, you can: Switch from Original Medicare to Medicare Advantage (as long as you’re enrolled in both Medicare Part A and Part B, and you live in the Medicare Advantag