Listing of Fiscal Intermediaries/Affiliated Contractors and A/B MACs

Fiscal Intermediaries/Affiliated Contractors (FIs/ACs) and A/B Medicare Administrative Contractors (A/B MACs) are organizations that have entered into a contract with Medicare to determine at the first level whether a claim for Medicare benefits under Part A or Part B should be paid. Appellants who receive a partially favorable or unfavorable first level redetermination decision from a FI/AC or A/B MAC may appeal that decision by submitting a reconsideration request (second level appeal) to MAXIMUS Federal Services, the Part A Qualified Independent Contractor (QIC).