Medicare Advantage is a way Medicare lets private insurance companies offer coverage instead of traditional Medicare

Medicare Advantage plans are approved by Medicare because Congress wrote them into law as an alternative to traditional Medicare. Medicare does not run these plans — private insurers like Humana, UnitedHealthcare, and Cigna do. But Medicare sets the rules those companies must follow, checks their finances, and pays them a fixed amount per member each month to provide the same coverage traditional Medicare would.

The approval process is not something you go through as an individual. Instead, Medicare reviews each plan before it can be sold to you. The plan must cover at least what traditional Medicare covers — hospital, doctor visits, and prescription drugs — and often adds extras like dental or vision. If a plan meets Medicare's standards, it gets the green light to operate in your state that year.

Key Takeaways

  • Medicare Advantage plans are approved by Medicare because they are written into federal law as an official alternative to traditional Medicare coverage.
  • Private insurance companies run Medicare Advantage plans, but Medicare sets the coverage rules, reviews finances, and pays the plans a monthly rate per member.
  • A plan must cover at least what traditional Medicare covers before Medicare will let it operate in your state.
  • Medicare reviews plans every year, so a plan that was approved last year must meet current standards to be approved again.

How Medicare reviews and approves plans each year

Every fall, insurance companies submit their plans to Medicare for the next calendar year. Medicare checks whether the plan's benefits meet the minimum standard, whether the company has enough money to pay claims, and whether the plan's costs and out-of-pocket limits are reasonable. This review takes several months.

Medicare also looks at how well each plan performed the year before — whether members got care on time, whether the plan paid doctors fairly, whether customer complaints were handled. A plan with a history of problems may be rejected or told to fix specific issues before it can operate again. Once Medicare approves a plan, it publishes the decision and the plan can be marketed to you starting October 15 each year.

Why Congress created Medicare Advantage in the first place

Medicare Advantage started in 1997 as a way to give Medicare members more choices and to let private companies compete on price and benefits. The idea was that competition would lower costs and that private insurers might offer extras — like dental or gym memberships — that traditional Medicare does not cover.

Congress also saw it as a way to control Medicare spending. Instead of paying doctors and hospitals directly for each service, Medicare pays a fixed monthly amount to the insurance company. If the company spends less, it keeps the difference. If it spends more, it absorbs the loss. This is supposed to create an incentive for the company to manage costs efficiently.

What "approved" actually means for your coverage

When Medicare approves a plan, it means the plan meets federal standards and you can legally enroll in it. It does not mean Medicare guarantees the plan will be good, that you will like it, or that it will cover every doctor you want to see. It means the plan has met a baseline: it covers the core services, the company is financially stable, and the plan's rules are transparent.

You still need to read the plan's details — which doctors are in the network, what the copays are, whether your medications are covered, what the out-of-pocket maximum is. Medicare approval is a floor, not a recommendation. Two approved plans in the same county can be very different.

The difference between Medicare approval and plan ratings

Medicare also publishes star ratings for each plan — a five-star system based on quality measures like customer service, care coordination, and health outcomes. A plan with five stars has performed better than a plan with three stars. But both are approved by Medicare.

The star rating is meant to help you compare plans. A higher-rated plan may be a better choice for you, but approval is separate. Even a three-star plan meets Medicare's minimum standards. The rating tells you how well the plan has performed relative to others, not whether it is safe or legitimate.

What happens if Medicare does not approve a plan

If a plan fails Medicare's review, it cannot be sold to new members. Existing members are usually given a grace period to switch to a different plan without penalty. This is rare — most plans that explore are approved — but it happens when a company cannot demonstrate financial stability, when benefits fall below the minimum, or when the plan has a serious history of complaints and service failures.

If you are already in a plan and Medicare does not approve it for the next year, you will receive a letter explaining what happened and your options. You can switch to any other approved plan during the annual enrollment period, which runs from October 15 to December 7 each year.

How to check whether a specific plan is Medicare-approved

You can search for approved plans on Medicare.gov. Go to the Plan Finder tool, enter your zip code, and see all the approved plans available to you. The search results show only plans that Medicare has approved for your area. If a plan appears in the results, it is approved.

You can also call 1-800-MEDICARE to ask whether a specific plan is approved. Have the plan name and your zip code ready. The representative can tell you whether the plan is currently approved and can answer basic questions about how it works.

Frequently Asked Questions

Does Medicare approval mean the plan is better than traditional Medicare?

No. Approval means the plan meets a minimum standard and is financially stable. Whether it is better for you depends on your doctors, medications, and health needs. Some people do better with traditional Medicare; others prefer Medicare Advantage. Approval does not favor one over the other.

Can a Medicare Advantage plan lose its approval after I enroll?

Yes, though it is uncommon. If a plan fails to meet standards during the year, Medicare can revoke approval. You would be notified and given time to switch to another plan without penalty. Most plans that are approved stay approved year to year.

What does it mean if a plan has a low star rating but is still approved?

It means the plan meets Medicare's baseline standards but has not performed as well as higher-rated plans on quality measures. You can still enroll, but you may want to compare it to higher-rated options in your area first. Star ratings help you choose among approved plans.

Who actually approves Medicare Advantage plans — Medicare or the government?

Medicare is part of the federal government, run by the Centers for Medicare and Medicaid Services (CMS). CMS reviews and approves plans on behalf of Medicare. When you hear "Medicare approved," it means CMS has reviewed the plan and determined it meets federal standards.

Can I enroll in a Medicare Advantage plan outside the annual enrollment period?

Only in certain situations — if you are newly may be able to access for Medicare, if you lose other coverage, or if you move. Otherwise, enrollment is limited to October 15 through December 7 each year. If you miss this window, you cannot enroll until the next year unless a may have access to event occurs.