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MBI

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Medicare Beneficiary Identifier

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Medicare Beneficiary Identifier

Effective 1/1/2020, the new Medicare Number, commonly referred to as the MBI, will be required for all Medicare inquiries and transactions.

Visit CMS’ Medicare Beneficiary Identifiers (MBIs) web page for detailed information related to the transition to MBI.
Health Care Providers - Protect the Identity of Your Medicare Patients: Start Using New Medicare Beneficiary Identifiers (MBIs) Right Away provides three ways for health care providers to obtain MBIs.
How do health care providers & office managers use MBIs?

Last Modified: 1/7/20

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