Send all returned Medicare contractor's checks issued by the intermediary or carrier
such as Blue Cross & Blue Shield, Aetna, Traveler's, etc., to the intermediary or
carrier who issued the check.
Forward Medicare overpayment refunds not involving premium payments to the intermediary
or carrier shown on the notice of overpayment unless the submitted refund is in response to an action generated by the Payment Center (PC).
In those situations, forward the refund to the Mid-Atlantic Program Service Center