How Much Does Medigap Plan C Cost? 
I presume you mean Medicare Part C. Medicare Part C was conceived in the 1990 's and offered participants an alternative to traditional Medicare . Most of the Part C plans were HMO 's and have very limited coverage area and limited provider networks . Most Part C plans are now available as Medicare Advantage plans , many of which also have limited geographic service areas , limited provider networks , and considerable out of pocket liability on a large claim . 