Who Is Eligible For Part D Medicare? 
Everyone who qualifies for Part A and B Medicare also qualifies for Part D Medicare . Part D prescription drug coverage is provided through medicare approved and private insurance companies . Medicare Prescription Drug Plans -LRB- PDP 's -RRB- add drug coverage to traditional Medicare . Medicare Advantage Plans combine Part A , B and D into one policy -LRB- MA-PD 's -RRB- . 