Offered through Private Insurance CompaniesMedigap is Medicare Supplement Insurance that helps fill "gaps" in Original Medicare.
You must have Medicare Part A and Part B to be eligible for Medigap.
Original Medicare pays for much, but not all, of the cost for covered health care services and supplies. A Medicare Supplement Insurance (Medigap) policy can help pay some of the remaining health care costs, like:
-Copayments
-Coinsurance
-Deductibles (for Part B only if enrolled before Jan 1,2020)
Medigap policies generally don't cover:
-Long-term care (like non-skilled care you get in a nursing home)
-Vision or dental services
-Hearing aids
-Eyeglasses
-Private-duty nursing
You also can not be enrolled in an Advantage plan and Medigap at the same time.