What Is My Medicare Part B Number? 
Your Medicare Part B number is the same as your Medicare Part A number . When you enroll in Medicare , you are assigned a claim number - this is typically going to be your social security number plus a letter on the end -LRB- designates certain conditions - e.g. only you are applying and not your spouse , on group coverage , etc. -RRB- . Please feel free to contact me for help and if you have any other questions . Thanks very much . 