How Does Tricare Work With Medicare? 
If you are eligible for premium-free Medicare Part A , you must have both Part A and Part B to continue to receive TRICARE . Once you start receiving Part A and B , you start receiving TRICARE benefits under TRICARE for Life -LRB- TFL -RRB- . There is no advantage for most TRICARE recipients to enroll in Medicare Part D because TFL 's drug benefits are so comprehensive . 