In the coming months, they will reach retiree mailboxes.
Provided by Greg Ferguson
New Medicare cards will be mailed out between now and next April. They have an 11-digit I.D. number instead of your SSN, and they are made of paper rather than plastic. This new 11-digit number is called the Medicare Beneficiary Identifier (MBI). If you have recently moved, be sure to provide the Social Security Administration with your new address so that your new card can reach you without delay. Once you get the new card, be sure to destroy the old one, and guard your MBI as you would guard your SSN.1,2