Nundina › Discover calendars › Health Insurance Open Enrollment calendar › 💊 Medicare Annual Enrollment Period Begins💊 Medicare Annual Enrollment Period Begins15 October 2027Medicare Annual Enrollment Period (AEP) opens for coverage starting January 1, 2028. The October 15 - December 7 window is set by federal regulation and does not move from year to year. Verified via medicare.gov, 2026-08.Health Insurance Open Enrollment calendarMore from this calendar

1 November 2026 - 🏥 ACA Marketplace Open Enrollment Begins

7 December 2026 - 💊 Medicare Annual Enrollment Period Ends

15 December 2026 - 🏥 ACA Marketplace Deadline for January 1 Coverage

15 January 2027 - 🏥 ACA Marketplace Open Enrollment Ends (Federal Marketplace)

1 November 2027 - 🏥 ACA Marketplace Open Enrollment Begins