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Transition to New Medicare Numbers and Cards

October 03, 2017 9:26 AM | Anonymous

The Centers for Medicare & Medicaid Services (CMS), through the Medicare Administrative Contractors (MACs), recently mailed letters to all Medicare fee-for-service providers about the work to assign new numbers known as Medicare Beneficiary Identifiers (MBIs) and issue new Medicare cards to Medicare beneficiaries beginning in April 2018.

CMS top priorities include:

  • Ensuring Medicare patients have continuous access to care; and
  • Physicians have the tools and information you need for a smooth transition. Starting in June 2018, you can look up your patients New Medicare numbers through your MACs secure web portal.

Carefully review the letter and accompanying fact sheet and find out how to prepare to accept the new number beginning in April 2018.


Your letter will contain specific information for your MAC. You can also view a sample letter and print-friendly fact sheet.

For More Information

Review the new Medicare card design and press release to learn more.

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