What Is Medicare Advantage Part C? 
Medicare Advantage -LRB- Part C -RRB- is a private Medicare system run by insurance carriers . When you elect an Advantage plan you are no longer in traditional Medicare but in a private system . Your medical provider files claims with the carrier , not Medicare . You should know that most Advantage plans have networks . If you use a non-par provider you either have no coverage at all or you have higher deductibles , higher copay 's and higher out of pocket . Advantage plans have a LOT of moving parts and a LOT of out of pocket . They are great plans UNTIL you get sick . 