Medicare General Enrollment Period 2025 Dates. Instead, you’ll use medicare’s general enrollment period, which runs from january 1 to march 31. During this window, beneficiaries can.

This is the time to review and assess your medicare enrollment choices if you haven’t. If you didn’t enroll in original medicare part a and part b during your initial enrollment period, you may be able to do so during the 2025 medicare general enrollment period that lasts from january 1 to march 31 each year.