MSP Voluntary Refunds

Medicare Secondary Payer (MSP) voluntary refund checks submitted by providers to NHIC are included with all other checks received at NHIC. As such, research is required to identify those checks as MSP voluntary refunds. In order to improve the timeliness for application of the monies returned and provide improved service to the provider community, please use the following guidelines when sending MSP voluntary refunds to NHIC:

• Include the words “MSP” on the refund checks.
• Include the words “MSP” on the envelope containing the check.

Mail the MSP refund check as follows

For Southern California providers:
Medicare Administration – MSP Refund
National Heritage Insurance Company
P.O. Box 515301
Los Angeles, CA 90051-6601

For Northern California providers:
Medicare Administration – MSP Refund
National Heritage Insurance Company
P.O. Box 951
Marysville, CA 95901-0951

For New England providers:
Medicare Government Accounting
National Heritage Insurance Company
P.O. Box 9103
Hingham, MA 02044-9103