Can I Drop My Medicare Part B? 
If you have been automatically enrolled in Medicare Part A and B , and are still receiving group health benefits elsewhere , you can drop your Medicare Part B by following the instructions that came in your Medicare packet . There is no penalty to sign up later , in that situation . If you have been on Part B and are dropping it for some reason , be sure to call Social Security at 800-772-1213 before dropping it so that you have a thorough understanding of all the implications of that decision . 