Celtic Consulting

New Medicare Card: MBI Look-up Tool and RRB Mailing

Posted Monday, May 21, 2018

Medicare Beneficiary Identifier (MBI) Look-up Tool Clarification:
The Medicare Administrative Contractor (MAC) portal MBI look-up tool will only return an MBI if the new Medicare card has been mailed; this avoids potential confusion if the MBI is used before the beneficiary receives their new Medicare card/MBI.

Railroad Retirement Board (RRB) Mailing:
On June 1, RRB will mail new Medicare cards to their beneficiaries. CMS will return a message on the eligibility transaction response for every RRB patient MBI inquiry that will read, “Railroad Retirement Medicare Beneficiary.”