Can you opt back in to Medicare Part A/B/D after choosing Medicare Advantage plan?
Yes, you can do so during:
- "Fall Open Enrollment" - October 15 to December 7, 2014
- "Medicare Advantage Disenrollment Period" (MADP) - January 1 to February 14, 2015
And if your Medicare Advantage plan leaves your area or you move out of your plan's service area, you may be eligible to switch back to Original Medicare during what's called a "Special Enrollment Period" (SEP).