Refer to Send an Overpayment Remittance in the RDS User Guide for the mailing address for remitting a payment, as well as details for preparing the check or money order and how CMS' RDS Center acknowledges receipt of an overpayment remittance.
The RDS Secure Website will be unavailable Tuesday, 6/10/25, from 8:30 PM EST – 9:00 PM EST.