CFR > Title 42 - Public Health > CHAPTER IV—CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER B—MEDICARE PROGRAM (parts 405 to 426) > PART 405—FEDERAL HEALTH INSURANCE FOR THE AGED AND DISABLED > SUBPART I—Determinations, Redeterminations, Reconsiderations, and Appeals Under Original Medicare (Part A and Part B) (§405.900 to §405.1140) > 405.1128—Action of the MAC.

405.1128—Action of the MAC.

(a) After it has reviewed all the evidence in the administrative record and any additional evidence received, subject to the limitations on MAC consideration of additional evidence in § 405.1122, the MAC will make a decision or remand the case to an ALJ.
(b) The MAC may adopt, modify, or reverse the ALJ hearing decision or recommended decision.
(c) The MAC mails a copy of its decision to all the parties at their last known addresses. For overpayment cases involving multiple beneficiaries where there is no beneficiary liability the MAC may choose to send written notice only to the appellant. In the event the decision will result in a payment to a provider or supplier, the Medicare contractor must issue any electronic or paper remittance advice notice to that provider or supplier.