The best advice I can tell you is to first check with your current docs to find out what plans they accept; otherwise you may have to choose new docs found on your new plan.

Here is the government link with all the jargon explained:
http://ssa-custhelp.ssa.gov/app/answ...-a,-b,-c-and-d

My husband opted for Humana for his "donut" coverage and also for Part D drug coverage. So far, his co-pays have been $5.