1. For Medicare, see Medicare administrative contractor (MAC) . 2. For TRICARE and CHAMPVA, the insurance company that handles the claims for care received within a region of the United States and services specific states. Also see TRICARE regions .
The Rantings of the barely human.
1. For Medicare, see Medicare administrative contractor (MAC) . 2. For TRICARE and CHAMPVA, the insurance company that handles the claims for care received within a region of the United States and services specific states. Also see TRICARE regions .