What's Medicare Supplement Insurance (Medigap)?

Medicare Supplement Insurance (Medigap) is extra insurance you can buy from a private health insurance company to help pay your share of out-of-pocket costs in Original Medicare .

Generally, you must have Original Medicare – Part A (Hospital Insurance) and Part B (Medical Insurance) – to buy a Medigap policy.

Older hispanic man with glasses and a gray mustache. His arms are crossed in a relaxed manner and he's wearing a short sleeve maroon polo shirt and a watch.

What do you want to do?

Get Medigap basics

Learn what Medigap covers, how it works, and general costs.

Learn Basics

Get ready to buy

Learn when and how to buy, switch, or drop a policy.

Prepare to Buy

Find Medigap policies

Find a policy in my area.

Find Medigap Policies

Already have a Medigap policy? Find out if you can change or drop your policy.