We're using Medicare Beneficiary Identifiers (MBIs)

We removed Social Security Numbers from Medicare cards and replaced them with Medicare Beneficiary Identifiers (MBIs). 

Get details to help you with MBIs

Get quick resources to help you use MBIs

Get an overview 


“Safeguarding our beneficiaries' personal information continues to be one of our top priorities."

- CMS Administrator Seema Verma

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