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Refund Check for Demand Letter Refund Check for Demand Letters

When you have received a Medicare demand letter and sending a check to make payment on the debt, include a copy of the demand letter with your check. You may combine amounts and send a single check. Only one check is needed, regardless of how many beneficiary accounts were included in the demand letter.

If a portion of the check is related to an Extended Repayment Plan, include a loan number or a copy of the amortization schedule.

Medicare Refund Helpful Tips:

  • Send separate checks for overpayments previously requested (demand letters) from those that are being voluntarily refunded.
  • Send separate checks for refunds due to Medicare Secondary Payer (MSP) from those being refunded due to Non-MSP.
  • Mail your check along with the required documentation associated with the refund.  Please remember to utilize the helpful hints section above.  If your request is for MSP, please address to MSP Overpayment Recovery:
  • Mailing Address for refund checks:

    CGS – J15 Part B Kentucky
    PO Box 957065
    St. Louis, MO 63195-7065

    CGS – J15 Part B Ohio
    PO Box 957352
    St. Louis, MO 63195-7352

Please allow CGS 20 days from the date of receipt to process refund checks for overpayments previously demanded.

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