Medicare Advantage vs. Medicare Supplement: Which Is Better in 2026?

Last Modified: 10/05/2026 | Reviewed by Keith Armbrecht (NPN 634015)

Quick Summary

Medicare Advantage and Medicare Supplement are two very different ways to manage your Medicare coverage and out-of-pocket costs.

A Medicare Advantage plan is a private alternative for receiving your Medicare Part A and Part B benefits.

A Medicare Supplement, also called Medigap, works with Original Medicare and helps pay some of the costs Original Medicare leaves behind.

You generally choose one path or the other—you don’t use Medigap to pay Medicare Advantage expenses.

Key Facts

Medicare Supplement

  • Works with Original Medicare
  • Requires Medicare Part A and Part B
  • Generally offers broad access to providers who accept Medicare
  • Helps reduce Original Medicare cost sharing
  • Has a separate monthly premium
  • Usually requires separate Part D coverage
  • Doesn’t include most routine dental, vision or hearing benefits
  • Can provide very predictable Medicare-covered healthcare expenses

Medicare Advantage

  • Private alternative to Original Medicare
  • Includes Part A and Part B benefits
  • Most plans include Part D
  • May offer additional dental, vision, hearing or fitness benefits
  • Provider networks may apply
  • Prior authorization may apply
  • Copays and coinsurance vary by plan
  • Has an annual out-of-pocket limit for covered Medicare Part A and Part B services

The Biggest Difference

With Medicare Supplement:

Original Medicare pays first → Medigap pays according to your plan

With Medicare Advantage:

The private Medicare Advantage plan administers your Medicare-covered benefits

That’s a fundamentally different structure.

Provider Access

Medicare Supplement

Because Medigap works with Original Medicare, you can generally use healthcare providers nationwide who accept Medicare.

Medicare Advantage

Your access may depend on the plan’s provider network.

HMOs generally require you to stay in network except for certain emergencies and other limited situations.

PPOs generally allow out-of-network care, but you may pay more.

Prior Authorization

Original Medicare generally doesn’t require prior authorization for most services.

Medicare Advantage plans may require prior approval before certain services or supplies are covered.

Out-of-Pocket Costs

With a comprehensive Medigap policy, much of Original Medicare’s cost sharing can be reduced substantially.

With Medicare Advantage, you’ll generally have plan-specific copays, coinsurance and an annual out-of-pocket maximum for covered Part A and Part B services.

Premiums

Medicare Advantage plans may have low or even $0 additional plan premiums.

Medigap generally requires a separate monthly premium.

But don’t compare only premiums.

Compare:

Premium + deductible + copays + coinsurance + maximum exposure

Video Explanation from Keith

Medicare Advantage vs. Medicare Supplement

Keith's Take

This is one of the most important Medicare decisions you’ll make.

Medicare Advantage often wins the premium comparison.

Medicare Supplement often wins the predictability and provider-access comparison.

Neither one should be chosen based on a television commercial or one benefit.

I want someone looking at:

Doctors and hospitals

Travel

Prescription drugs

Prior authorization

Annual healthcare risk

Monthly premium

and perhaps most importantly:

What happens if your health changes later?

Keith Armbrecht
Keith Armbrecht
Medicare on Video

Frequently Asked Questions

Q. Can I have Medicare Advantage and Medigap at the same time?
A. No. Medigap isn't used to pay Medicare Advantage deductibles, copays or premiums.
Q. Which gives broader provider access?
A. Original Medicare with Medigap generally provides broader nationwide access to providers who accept Medicare.
Q. Which has the lower premium?
A. Medicare Advantage often has the lower upfront premium, but actual total costs can vary substantially.
Q. Which has an out-of-pocket maximum?
A. Medicare Advantage plans have an annual out-of-pocket limit for covered Part A and Part B services.
Q. Does Medigap include prescriptions?
A. No. You generally add a separate Part D plan.
Q. Does Medicare Advantage include drug coverage?
A. Most Medicare Advantage plans include Part D.
Q. Does Medicare Advantage include extra benefits?
A. Many plans offer additional benefits such as dental, vision, hearing or fitness benefits.
Q. Can I switch from Medicare Advantage to Medigap later?
A. You can leave Medicare Advantage during certain enrollment periods, but obtaining Medigap later may involve medical underwriting depending on your state and guaranteed-issue rights.

Official Government Sources

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