Recently, CMS (Center for Medicare and Medicaid Services) sent letters to people with Medicare who may have been affected by a recent data breach. Approximately 47,000 new cards with new MBI numbers are being mailed to beneficiaries.
Ask your 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 patient didn't get a new Medicare card yet.
Learn what to do if your patient's MBI changes.