The essentials
How this coverage works
You need Medicare Parts A and B before buying a Medigap policy.
Standardized plans are identified by letters (examples: Plan G or Plan N). The same letter provides the same basic benefits regardless of the insurance company, although premiums can differ.
Policies sold after 2005 do not include prescription drug coverage, so you will most likely need a separate Part D plan.
Medigap is not the same as Medicare Advantage, and you cannot use both at the same time.
