CMS sent letters to people with Medicare who may have been affected by a recent data breach. They are mailing approximately 47,000 new Medicare cards with a new MBI to those affected. Learn what to do if your resident or patient’s MBI changes. Ask your resident/patient for their new Medicare card if you get “invalid member ID” when checking Medicare eligibility. Access your Medicare Administrative Contractor’s secure internet portal to use the MBI look-up tool if your resident/patient didn’t get a new Medicare card yet.
