How Do I Sign Up For Medicare B? 
Unless you chose to opt out when you were first eligible , you will be automatically enrolled in Part B . You will receive information from Medicare and given a choice of opting out . Do not opt out unless you are covered under a group plan . When you receive your card it should have both part A and part B listed . If it does not then call 1-800-Medicare or your local Social Security office and they will make suure you are enrolled . 