Will Medicare Pay As A Secondary? 
The only time I am aware that Medicare is secondary is when you are covered under and employer group health plan if there are more than 20 full time employees . I always advise people in that situation to take out the Part A of Medicare and delay getting both Part B and Part D until you retire or come off your employer 's group health plan . You do not need Part B or Part D as long as you are covered under an employer plan . The Part B premium this year for new people enrolling in Medicare is $ 121.80 and you do n't need Part B if you are covered by your employer since the employer coverage is primary . You can go ahead and enroll in Part A of Medicare because it is free . 