What Is a Medicare Advantage Plan?

By Motley Fool Staff – Updated Dec 13, 2025 at 5:15 PM EST

Key Points

Medicare Advantage offers integrated benefits, potentially lowering out-of-pocket costs.
Market remains lucrative; some insurers receive significant federal bonus payments.
Switching from Medicare Advantage to traditional Medicare limits Medigap eligibility.

Medicare Advantage is a private alternative to the federal Medicare program that provides health insurance for 65.7 million elderly and disabled people -- almost 1 in 5 Americans. We'll discuss the history of the program, its pros and cons, and the market for companies offering Medicare Advantage plans.

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The words Medicare Advantage are printed on a paper clipped to a clipboard. — Image source: Getty Images.

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At the time of its creation, Medicare Advantage was seen as having several benefits over traditional Medicare:

People with private plans might enjoy benefits not available under traditional Medicare, such as dental, hearing, vision, and prescription drug coverage and (sometimes) health club memberships.
Out-of-pocket costs could be lower for Medicare Advantage plans; the government set the maximum at $8,300 in 2023 and $8,850 in 2024. People enrolled in traditional Medicare plans are often unpleasantly surprised to learn they're on the hook for 20% of all costs for Part B services, including basic healthcare, like doctor visits, outpatient surgeries, and other potentially expensive services.
All benefits would be coordinated by one insurer rather than multiple providers.
Rising healthcare costs might slow since insurance companies could partially control costs by steering people from Medicare Advantage to their own networks, such as health maintenance organizations (HMOs) and preferred provider organizations (PPOs).

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The promise of Medicare Advantage, however, hasn't entirely panned out. Despite spending more on healthcare than any other country, the U.S. continues to rank dead last in healthcare outcomes among 10 Organisation for Economic Co-operation and Development (OECD) nations.

And, like virtually every other U.S. healthcare consumer, Americans enrolled in Medicare Advantage programs have a number of complaints:

Insurers are incentivized to limit, rather than provide, medical services because the federal government pays them a fixed amount per patient. People enrolled in Medicare Advantage often must jump through hoops to receive authorization for all but the most life-threatening medical emergencies.
Since insurers establish healthcare networks, people enrolled in Medicare Advantage plans are required to go only to in-network healthcare providers. Many plans also require people enrolled in Medicare Advantage to receive care in specific regions of the U.S.
People unhappy with Medicare Advantage can switch back to traditional Medicare, but then they're generally ineligible to buy supplemental coverage (Medigap) to defray expensive medical bills.