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COB Web Site Update Contacting the COB Contractor Newsletters FactSheets Glossary Contact Us |
Welcome to the Medicare Secondary Payer and You Page
This section will provide you with information on Medicare Secondary Payer (MSP) laws and the various methods employed by the Centers for Medicare & Medicaid Services (CMS), formerly the Health Care Financing Administration, to gather data on other insurance that may be primary to Medicare.
Click below to get more information on the topic of your choice.
Responsibilities of Beneficiaries Under MSP
Responsibilities of Providers under MSP
Responsibilities of Employers under MSP
Responsibilities of Attorneys under MSP
If you have any questions regarding the COB MSP Claims Investigation process, please call the COB Contractor’s Customer Service Department toll-free at 1-800-999-1118 or TTY/TDD: 1-800-318-8782 for the hearing and speech impaired. Customer Service Representatives are available to assist you Monday through Friday, from 8:00 a.m. to 8:00 p.m., Eastern Time, except holidays.
