How do I cancel a Medicare Advantage Plan or Part D plan after a member's death? Ryan Kennelly April 01, 2022 04:43 Updated Follow If you report death to Medicare/Social Security it will automatically term Part D or MAPD plan. You still have to manually call and cancel Med Supplement plans. To report the death of a person with Medicare: Make sure you have the person’s Social Security Number. Call Social Security at 1-800-772-1213 (TTY: 1-800-325-0778) Related articles When are Medicare Plans Guaranteed Issue with no pre-existing conditions? Medicare Advantage Disenrollment: What to know Can I Buy Insurance To Cover Bariatric Surgery? What is the penalty for not having health insurance in 2022? Comments 0 comments Please sign in to leave a comment.