When Can I Switch Medicare Advantage Plans? 
You can switch your Medicare Advantage plan during the annual open enrollment period that begins in October and runs through December . There are a few other times when Medicare allows you to switch Advantage plans . If your Medicare Advantage carrier goes out of business -LRB- like Universal Healthcare -RRB- you can change to another Advantage plan or return to original Medicare and qualify for a Medicare supplement plan . If you leave your Advantage plan service area is another qualifying event . 