Medicare Advantage vs. Medicare Supplement: What Is the Difference?

Medicare Advantage and Medicare Supplement are two different ways to manage your coverage, and you cannot use both at the same time. Medicare Advantage (Part C) replaces the way you receive your benefits through a private plan that bundles Parts A and B, usually includes drug coverage, and often adds extras like dental and vision. These plans use provider networks and have an annual out-of-pocket maximum.

A Medicare Supplement, or Medigap, policy works alongside Original Medicare and helps pay costs like deductibles, copays, and coinsurance. With this approach you can see any provider that accepts Medicare nationwide, but you typically pay a monthly premium for the supplement and add a separate Part D drug plan. Medigap offers broad access and predictable costs but does not include extra benefits.

The right choice depends on whether you value lower upfront costs and bundled extras or maximum provider flexibility and predictable spending. Travel habits, health needs, and budget all play a role. A licensed Medicare advisor can compare both approaches based on your situation so you can decide with confidence.

One important detail to keep in mind is that switching from Medicare Advantage to a Medigap policy later may require passing medical underwriting in many states, which could affect whether you can get a supplement or what you pay. Because of that, it is worth thinking carefully about your long-term needs when you first choose between these two approaches, not just your situation today.