Yes, Medicare Advantage is private insurance, but it works differently than coverage you buy on your own

Medicare Advantage is a type of private insurance plan that insurance companies offer as an alternative to Original Medicare. The federal government sets the rules and pays the insurance company a fixed amount each month to cover your care. You enroll through Medicare, not directly with the insurance company, and the plan must cover at least what Original Medicare covers — but the way it does so, and what you pay, depends on which plan you choose.

The key difference from private insurance you might buy outside Medicare is that Medicare Advantage plans are required to follow Medicare's rules. They cannot drop you or charge you more because of your health. They also cannot charge you more than a set amount out of your pocket each year. That protection is built in by law.

Key Takeaways

  • Medicare Advantage plans are sold by private insurance companies but are regulated by Medicare, so they must cover at least what Original Medicare covers.
  • You pay a monthly premium to the insurance company, plus copays and deductibles that vary by plan — these costs are often lower than Original Medicare if you use a lot of care.
  • Most Medicare Advantage plans include prescription drug coverage and extras like dental or vision, which Original Medicare does not.
  • Your out-of-pocket costs are capped each year by law, so you cannot be charged unlimited amounts even if you need extensive care.
  • You must use doctors and hospitals in the plan's network in most cases, or pay more or nothing at all if you go out of network.

How Medicare Advantage differs from Original Medicare

Original Medicare is run by the federal government. It covers hospital care (Part A) and doctor visits (Part B), but it does not cover prescription drugs unless you add Part D separately. You can see any doctor or hospital that accepts Medicare, anywhere in the country. You pay a deductible, then Medicare pays its share and you pay yours — there is no yearly cap on what you might owe.

Medicare Advantage plans are run by insurance companies. They must cover everything Original Medicare covers, but they do it through their own networks. You choose a plan, pay a monthly premium to that company, and use doctors and hospitals in their network. Most plans include prescription drug coverage built in, and many add dental, vision, or hearing benefits. Your yearly out-of-pocket costs are capped — once you hit that limit, the plan pays everything else for the rest of the year.

The trade-off is that you usually cannot see a doctor outside the plan's network without paying the full cost yourself, unless it is an emergency. Some plans are HMOs (Health Maintenance Organizations), which require you to pick a primary care doctor and get referrals to see specialists. Others are PPOs (Preferred Provider Organizations), which let you see specialists without a referral but charge you more if you go out of network.

What you pay with Medicare Advantage

Your costs depend on which plan you choose. Every Medicare Advantage plan has a monthly premium, a yearly deductible, copays for doctor visits and prescriptions, and coinsurance (a percentage you pay after you meet the deductible). The plan must tell you the maximum you could owe in a year — this is called the out-of-pocket maximum. Once you reach it, the plan pays 100 percent of covered services for the rest of that calendar year.

Some plans have a $0 premium, meaning you only pay Medicare Part B premium (which you pay anyway). Others charge $50 to $200 or more per month. A plan with a low or zero premium often has higher copays and deductibles. A plan with a higher premium might have lower copays. You can compare the actual costs for your doctors and medicines by using the Medicare Plan Finder tool on Medicare.gov, which shows you what you would pay under each plan based on your specific prescriptions and doctors.

If you cannot afford the premium, you may be able to get help through Extra Help (for prescriptions) or Medicare Savings Programs (for premiums and cost-sharing). These are run by your state, and the rules vary by where you live.

Network restrictions and how they affect your care

Most Medicare Advantage plans are HMOs, which means you must use doctors and hospitals in the plan's network. If you see a doctor outside the network without a referral or emergency, you pay the full bill yourself. Some plans cover out-of-network emergency care, but routine care is not covered. This is very different from Original Medicare, where you can see any doctor anywhere.

If you travel frequently or have a doctor you want to keep, check whether that doctor is in the plan's network before you enroll. You can search the plan's provider directory on its website or call the plan to ask. If your current doctor is not in the network, you have the choice to switch doctors or choose a different plan that includes your doctor.

PPO plans within Medicare Advantage give you more flexibility — you can see out-of-network doctors, but you pay more. However, PPO plans are less common and often have higher premiums than HMOs.

Prescription drug coverage in Medicare Advantage

Most Medicare Advantage plans include prescription drug coverage (Part D) as part of the plan. You do not buy it separately. The plan covers brand-name and generic drugs on its formulary — a list of covered medications. If your doctor prescribes a drug that is not on the formulary, you can ask the plan to cover it anyway, or your doctor can request an exception.

Like all Part D plans, Medicare Advantage drug coverage has a yearly deductible, copays for each prescription, and a coverage gap (sometimes called the "donut hole"). Once you and the plan spend a certain amount on drugs, you enter the gap and pay a higher percentage of the cost until you reach catastrophic coverage, where the plan pays most of the cost again. The amounts change each year.

If you are taking expensive medications, compare the drug costs under different plans using Medicare.gov's Plan Finder. The same drug can cost very different amounts depending on which plan you choose.

When you can enroll in or switch Medicare Advantage plans

You can enroll in a Medicare Advantage plan when you first become may be able to access for Medicare (usually at 65) during your Initial Enrollment Period, which is seven months long and centered on your birthday month. You can also switch plans or enroll during Annual Enrollment Period, which runs from October 15 to December 7 each year. Any plan you choose during this period takes effect January 1.

If you miss these windows, you may not be able to enroll until the next Annual Enrollment Period, unless you have a may have access to life event like moving to a new state, losing other coverage, or becoming newly may be able to access for Medicaid. Some people with both Medicare and Medicaid have additional enrollment windows.

If you are already in a Medicare Advantage plan and want to switch to Original Medicare, you can do so during Annual Enrollment Period or during the Medicare Advantage Open Enrollment Period (January 1 to March 31 each year). If you switch to Original Medicare, you should also enroll in a separate Part D drug plan if you want prescription coverage.

Extras that come with many Medicare Advantage plans

Because Medicare Advantage plans compete for customers, many include benefits that Original Medicare does not cover. These might include dental (cleanings, fillings, extractions), vision (eye exams, glasses, contacts), hearing (exams and hearing aids), fitness programs (gym memberships or SilverSneakers), transportation to medical appointments, or meal delivery. The amount of coverage varies widely — some plans cover a dental cleaning once a year, others cover more extensive work with a dollar limit.

These extras are a real advantage if you use them. However, do not choose a plan based only on extras you think you might use. Focus first on whether your doctors are in the network and whether the drug and medical costs fit your budget. The extras are a bonus, not the main reason to pick a plan.

Frequently Asked Questions

Can I use my Medicare Advantage plan if I travel out of state?

Most Medicare Advantage plans cover emergency care anywhere in the United States. For routine care, you must use doctors in the plan's network, which may not exist in the state you are visiting. If you travel frequently or spend months in another state, ask the plan whether it has providers where you will be, or consider Original Medicare instead.

What happens to my Medicare Advantage plan if the insurance company stops offering it?

If your plan is discontinued, Medicare sends you a notice and you have the right to switch to another plan or to Original Medicare without waiting for Annual Enrollment Period. You have at least two months to make the switch. Medicare will help you find other plans available in your area.

Do I still pay Medicare Part B premium with Medicare Advantage?

Yes. You pay your Part B premium to Medicare (the amount depends on your income), and then you pay the Medicare Advantage plan's monthly premium to the insurance company. Some plans have a $0 premium, so you only pay Part B. Some plans credit your Part B premium, reducing what you owe the plan.

Can a Medicare Advantage plan refuse to cover a treatment my doctor recommends?

The plan can refuse to cover a treatment if it is not medically necessary according to Medicare's rules, or if it is not covered under the plan. You have the right to appeal the decision. Your doctor can also request an exception or appeal on your behalf. If the plan denies coverage, it must tell you why and how to appeal.

What if I have both Medicare and Medicaid — can I use Medicare Advantage?

Yes, but special rules explore. You are called a "dual may be able to access" beneficiary. Some Medicare Advantage plans are designed for people with both Medicare and Medicaid and may offer extra benefits. Your state Medicaid program may also limit which plans you can choose. Contact your state Medicaid office or call 1-800-MEDICARE to learn which plans are available to you.