A Medicare Advantage plan is an alternative way to get your Medicare coverage through a private insurance company instead of through Original Medicare

When you turn 65 or become may be able to access for Medicare, you have a choice. You can stay with Original Medicare (Part A and Part B run by the federal government), or you can switch to a Medicare Advantage plan, also called Part C. A Medicare Advantage organization is the private insurance company that offers this plan in your area. Instead of Medicare paying doctors and hospitals directly, you pay the Medicare Advantage organization a monthly premium, and they handle your coverage — deciding which doctors you can see, what hospitals you can use, and what you pay out of pocket.

The main trade-off is straightforward: Medicare Advantage plans often cost less in monthly premiums than Original Medicare plus a Medigap supplemental policy, but they usually have higher copays and deductibles when you actually use care. They also include benefits Original Medicare does not, like prescription drug coverage and dental or vision care. In exchange, you must use doctors and hospitals in the plan's network, except in emergencies.

Key Takeaways

  • Medicare Advantage plans are run by private insurance companies and usually cost less in monthly premiums than Original Medicare plus a Medigap policy, but often have higher copays and deductibles when you use care.
  • Most Medicare Advantage plans include prescription drug coverage (Part D) and extras like dental or vision, which Original Medicare does not cover.
  • You must use doctors and hospitals in the plan's network, except in emergencies, or pay more out of pocket.
  • You can switch plans or return to Original Medicare during the Annual Enrollment Period (October 15 to December 7 each year) without penalty.
  • Medicare Advantage organizations vary by region — the plans available to you depend on where you live.

How Medicare Advantage organizations work

When you join a Medicare Advantage plan, you are contracting with a private insurance company, not the government. That company receives a monthly payment from Medicare for each member, and in return, it promises to cover all the services that Original Medicare covers — hospital stays, doctor visits, lab work, and imaging. The organization decides how much you pay at the doctor's office, what your deductible is, and which providers are in your network.

The organization also decides whether to include extras. Most Medicare Advantage plans add prescription drug coverage at no extra premium (though you still pay copays for medications). Many also cover dental cleanings, eye exams, hearing aids, or fitness programs — benefits that Original Medicare does not. These extras are how organizations compete for members, because the monthly premium is often lower than what you would pay for Original Medicare plus a Medigap supplemental policy.

In exchange, you give up some freedom. You must see doctors in the plan's network, get referrals for specialists (in most plans), and follow the organization's rules about which hospitals and imaging centers you can use. If you go out of network without permission, you typically pay the full cost yourself.

Types of Medicare Advantage plans

Medicare Advantage organizations offer different plan structures, and the one available to you depends on where you live and which companies operate in your region. Each structure balances cost, flexibility, and how much control the organization has over your care choices.

Health Maintenance Organization (HMO) plans require you to choose a primary care doctor and get referrals to see specialists. You must use doctors and hospitals in the network, except in emergencies. These plans usually have the lowest premiums and copays. They work well if you have a regular doctor you want to keep seeing and do not mind getting referrals.

Preferred Provider Organization (PPO) plans let you see any doctor without a referral, but you pay less if you use in-network providers. You can go out of network and still have some coverage, though you will pay more. PPO plans usually have higher premiums than HMOs. They are a good choice if you travel frequently or want more flexibility in choosing doctors.

Private Fee-for-Service (PFFS) plans work differently — the organization negotiates rates with individual doctors rather than contracting with a network. You can see any doctor who agrees to those rates. These are less common and available in fewer areas. They offer more freedom but can be harder to navigate because there is no set network list.

Special Needs Plans (SNPs) are designed for people with specific conditions (like diabetes or heart disease), people living in institutions, or people who are also on Medicaid. They have more limited networks but more specialized support and care coordination for your particular situation.

What you pay with a Medicare Advantage plan

Your costs depend on the specific plan and the care you use. Every Medicare Advantage plan has a monthly premium (which varies by plan and region), though many plans have a premium of zero dollars — you pay only what Medicare pays the organization. You will also pay copays when you see a doctor, visit an urgent care center, or fill a prescription. Some plans have a deductible you must meet before coverage begins.

Medicare Advantage plans have an out-of-pocket maximum — a yearly limit on what you pay for covered services. Once you reach that limit, the plan covers 100 percent of covered services for the rest of the year. Original Medicare does not have this cap, which is one reason some people prefer Medicare Advantage. However, the copays and deductibles in Medicare Advantage plans are often higher than in Original Medicare. If you use a lot of health care, you might pay more overall with a Medicare Advantage plan, even if the monthly premium is lower. This is why comparing plans based on your own doctors and expected care is important, not just looking at the premium.

Network restrictions and how they affect your choices

Every Medicare Advantage organization maintains a network of doctors, hospitals, and other providers. When you join the plan, you receive a directory listing which providers are in network. If your current doctor is not in the network, you will need to switch doctors or pay out of pocket to keep seeing them. Before you join a plan, check whether your doctors, preferred hospital, and any specialists you see regularly are in the network.

In an HMO plan, using an out-of-network provider (except in emergencies) means you pay the full bill yourself — the plan does not cover it. In a PPO plan, you have some out-of-network coverage, but your copay or coinsurance is higher. Emergency care is covered at in-network rates regardless of where you receive it, so you do not have to worry about that. If your doctors are not in the network, ask the organization whether they will be added soon, or whether you can request an exception to use an out-of-network provider. Some plans will grant exceptions for continuity of care, especially if you have been seeing the same doctor for years.

When you can switch plans or go back to Original Medicare

You are not locked into a Medicare Advantage plan forever. Every year during the Annual Enrollment Period (October 15 through December 7), you can switch to a different Medicare Advantage plan, switch to Original Medicare, or make changes to your prescription drug coverage. Changes take effect on January 1. This is your main opportunity each year to reassess whether your current plan still meets your needs.

There are also limited times outside the Annual Enrollment Period when you can make changes. If you move to a new state or county, lose your current coverage, or experience certain life events (like the death of a spouse), you may be able to switch plans. These are called Special Enrollment Periods, and they usually last 60 days from the event. If you decide to leave a Medicare Advantage plan and return to Original Medicare, you can do so without penalty. However, if you want to buy a Medigap supplemental policy at that time, the insurance company can charge you more or deny you coverage based on your health history — this is called underwriting. To avoid this, some people buy a Medigap policy when they first turn 65, before joining a Medicare Advantage plan, so they have the option to return to Original Medicare later without facing higher rates.

How to find Medicare Advantage organizations in your area

The Medicare Advantage organizations available to you depend entirely on where you live. Some regions have many options; others have only a few. To see which plans operate in your area, visit Medicare.gov and use the plan finder tool. You will enter your zip code, and the tool will show you every Medicare Advantage plan available to you, along with the premium, copays, deductible, and which doctors and hospitals are in network.

You can also call 1-800-MEDICARE to speak with someone who can walk you through the plans in your area. Some states also have State Health Insurance information Programs (SHIPs) that offer free, one-on-one counseling to help you compare plans. To find your state's SHIP, search online for "[your state] SHIP" or ask your doctor's office. When comparing plans, look beyond the premium. Check whether your doctors are in network, what your copays would be for the care you use most often, and whether the plan covers the prescription drugs you take. Use the plan finder's cost estimator tool — it can show you what you would pay out of pocket in a given year based on your current medications and doctors.

Frequently Asked Questions

Do I have to join a Medicare Advantage plan?

No. You can stay on Original Medicare if you prefer. Medicare Advantage is an option, not a requirement. However, if you do not join a plan when you first become may be able to access and you do not have other creditable coverage, you may pay a penalty if you join later.

What happens if my Medicare Advantage plan leaves my area?

If your plan stops operating in your county, you will receive a notice and have the right to switch to another plan or return to Original Medicare without waiting for the Annual Enrollment Period. You will have at least 30 days to make the change.

Can I use my Medicare Advantage plan when I travel?

Emergency care is covered anywhere in the United States at in-network rates. For routine care while traveling, you would need to use in-network providers or pay out of pocket. If you travel frequently, a PPO plan may be better than an HMO because it covers some out-of-network care.

What if I am also on Medicaid?

If you may have access to for both Medicare and Medicaid (called "dual may be able to access"), you may be able to join a Special Needs Plan designed for dual-may be able to access people. These plans coordinate coverage between the two programs. Contact your state Medicaid office or call 1-800-MEDICARE to learn which plans are available to you.

Do Medicare Advantage plans cover long-term care or nursing homes?

Medicare Advantage covers skilled nursing facility care (short-term rehabilitation after a hospital stay) the same way Original Medicare does. Neither covers long-term custodial care in a nursing home. For that, you would need to pay out of pocket or have a separate long-term care insurance policy.