In most Medigap policies, when you sign the Medigap insurance contract you agree to have the Medigap insurance company get your Medicare Part B claim information directly from Medicare, and then they pay the doctor directly. Some Medigap insurance companies also provide this service for Medicare Part A claims. If your Medigap insurance company doesn’t provide this service, ask your doctors if they “participate” in Medicare. This means that they “accept assignment” for all Medicare patients. If your doctor participates, the Medigap insurance company is required to pay the doctor directly if you request. If you have any questions about Medigap claim filing, call 1-800-MEDICARE (1-800-633-4227). TTY users should call 1-877-486-2048.