Can I Get Medicare Part B Only? 
Yes , it 's possible to enroll in Medicare Part B without also enrolling in Medicare Part A . You can do this if you 're 65 or older , a U.S. resident -LRB- additional rules apply for non-U.S. citizens -RRB- , and do not yet qualify for premium-free Part A -LRB- having met the requirement of 40 quarters -LRB- 10 years -RRB- of working life and paying FICA taxes -RRB- . If you qualify for premium-free Part A , you 'll apply for both Part A & B together or apply for Part A first and Part B down the line . 