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Medicare 101: Start Here

A plain-English overview of how Medicare works, who it is for, and how the major coverage pieces fit together.

Who Medicare is for

Medicare is the federal health insurance program for people 65 and older, and for some people under 65 with qualifying disabilities or conditions such as ESRD or ALS. Eligibility and enrollment timing can depend on work history, current coverage, and how you become eligible.

Original Medicare

Original Medicare generally means Part A and Part B. It is accepted by most doctors and hospitals that take Medicare. It does not usually include routine dental, vision, or hearing, and it does not include outpatient prescription drug coverage unless you add Part D.

Medicare Advantage

Medicare Advantage plans are offered by private insurers approved to provide Medicare benefits. They often include extra benefits and usually include Part D, but they typically use networks, copays, and plan rules that can change each year.

Medicare Supplement (Medigap)

Medigap plans work with Original Medicare to help pay certain deductibles, coinsurance, and copayments. Standardized plan letters such as G and N describe the benefits. Medigap does not include Part D.

Where to go next

If you are approaching 65, start with the Turning 65 guide. If you are already enrolled, a Medicare Checkup can help organize what may be worth reviewing. Personalized plan research should be done with a licensed agent using current plan data for your ZIP code.

Related Medicare topics

Important: We are not affiliated with or endorsed by the U.S. Government or the federal Medicare program. This page is general education. Availability, eligibility, costs, and benefits can vary by plan and area.
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