Medicare Advantage (Part C) is a type of health insurance plan offered by private companies as an alternative to Original Medicare. These plans combine Part A (hospital) and Part B (medical) coverage, and usually Part D (prescription drug) coverage, into a single plan. Many plans also include benefits Original Medicare does not offer, such as dental, vision, and hearing care.
In 2026, more than 33 million Americans are enrolled in Medicare Advantage, making it a popular choice for people who want predictable costs and extra benefits. This guide covers how Medicare Advantage works, what it costs, what it covers, and how it compares to Original Medicare and Medigap so you can make an informed decision about your Medicare coverage.
Talk to a licensed Medicare advisor to find out if Medicare Advantage is right for you.
What Is Medicare Advantage (Part C)?
Medicare Advantage, also called Medicare Part C, is a Medicare-approved plan offered by private insurance companies like UnitedHealthcare, Humana, Aetna, and Blue Cross Blue Shield. When you enroll in a Medicare Advantage plan, the federal government pays the insurer a fixed amount each month to manage your care.
You are still enrolled in Medicare when you join a Medicare Advantage plan. The private insurer must cover everything Original Medicare covers, but they can use different cost-sharing structures, provider networks, and rules for accessing care. Medicare Advantage is one of the four main parts of Medicare, alongside Part A, Part B, and Part D.
Key facts about Medicare Advantage in 2026:
- Enrollment: Over 33 million beneficiaries (about 54% of all Medicare-eligible people)
- Plan availability: 99% of Medicare beneficiaries have access to at least one MA plan
- Average premium: Approximately $14 per month (many plans offer $0 premiums)
- Out-of-pocket maximum: Capped at $8,850 for in-network services in 2026
Who Is Eligible for Medicare Advantage?
To enroll in a Medicare Advantage plan, you must meet these requirements:
- Be enrolled in both Medicare Part A and Part B
- Live in the plan’s service area
- Not have End-Stage Renal Disease (ESRD), with some exceptions starting in 2021
Most people become eligible for Medicare at age 65. If you are turning 65 and considering your Medicare options, you can choose between staying with Original Medicare or enrolling in a Medicare Advantage plan during your Initial Enrollment Period.
How Do Medicare Advantage Plans Work?
Medicare Advantage plans work differently from Original Medicare in several important ways.
Provider networks: Most plans require you to use doctors, hospitals, and specialists within a network. The two most common network types are HMOs (Health Maintenance Organizations) and PPOs (Preferred Provider Organizations).
Referrals: HMO plans typically require a referral from your primary care physician before seeing a specialist. PPO plans generally do not.
Out-of-pocket maximum: Unlike Original Medicare, Medicare Advantage plans include an annual out-of-pocket maximum. Once you hit this limit, the plan pays 100% of covered services for the rest of the year. For 2026, this cap cannot exceed $8,850 for in-network services.
Prior authorization: Some services may require approval from your plan before you receive them. This is one of the most common concerns beneficiaries have about Medicare Advantage.
Types of Medicare Advantage Plans
There are several types of Medicare Advantage plans, each with different rules for how you access care:
HMO (Health Maintenance Organization)
HMO plans require you to use in-network providers for all non-emergency care. You typically need a primary care physician (PCP) and referrals to see specialists. Premiums are often lower, but flexibility is limited.
PPO (Preferred Provider Organization)
PPO plans allow you to see any provider, but you pay less when using in-network doctors and hospitals. No referral is needed for specialists. These plans offer more flexibility but may have higher premiums.
PFFS (Private Fee-for-Service)
PFFS plans let you see any Medicare-approved provider who agrees to the plan’s payment terms. There is no network requirement, but not all providers will accept these plans.
SNP (Special Needs Plan)
SNPs are designed for people with specific diseases, certain income levels, or those who qualify for both Medicare and Medicaid (dual-eligible). Benefits are tailored to members’ specific health needs. There are three types: D-SNPs (dual-eligible), C-SNPs (chronic condition), and I-SNPs (institutional).
HMO-POS (Point of Service)
HMO-POS plans work like standard HMOs but allow some out-of-network coverage in certain situations. These can be a middle ground between the cost savings of an HMO and the flexibility of a PPO.
What Does Medicare Advantage Cover?
All Medicare Advantage plans must cover the same services as Original Medicare Part A and Part B. This includes hospital stays, doctor visits, lab tests, preventive care, and durable medical equipment.
Beyond the required benefits, most Medicare Advantage plans also offer additional coverage that Original Medicare does not provide:
- Dental care: Routine cleanings, exams, X-rays, and sometimes major dental work
- Vision care: Routine eye exams, eyeglasses, or contact lenses
- Hearing services: Hearing exams and hearing aids
- Prescription drug coverage (Part D): Most MA plans include drug coverage
- Fitness programs: SilverSneakers, Renew Active, or similar wellness programs
- Telehealth: Virtual doctor visits
- Transportation: Rides to medical appointments
- Over-the-counter allowances: Quarterly or monthly allowance for health products
How Much Does Medicare Advantage Cost in 2026?
Medicare Advantage costs have several components. Here is what you can expect to pay in 2026:
Part B premium: You must continue paying your Medicare Part B premium ($185 per month for most people in 2026), regardless of which Medicare Advantage plan you choose.
Plan premium: Many Medicare Advantage plans charge $0 in additional monthly premiums. The national average is approximately $14 per month. Some plans even offer Part B premium rebates (called “giveback” benefits).
Deductibles: Vary by plan. Many HMO plans have $0 deductibles for medical services.
Copays and coinsurance: You pay a set amount or percentage for each service. For example, $20 for a primary care visit or $40 for a specialist visit.
Out-of-pocket maximum: The 2026 in-network cap is $8,850. Once reached, the plan covers 100% of covered services. Many plans set their limits lower.
Part D drug costs: Out-of-pocket prescription drug spending is capped at $2,100 in 2026 under the Inflation Reduction Act.
Medicare Advantage vs. Original Medicare and Medigap
One of the most important decisions you will make is whether to choose Medicare Advantage or stay with Original Medicare (with or without a Medigap supplement). Here is a side-by-side comparison:
| Feature | Medicare Advantage (Part C) | Original Medicare + Medigap |
|---|---|---|
| Monthly cost | Part B premium + plan premium (often $0) | Part B premium + Medigap premium ($100 to $300+/mo) |
| Out-of-pocket max | Yes, capped at $8,850 in 2026 | Medigap covers most or all out-of-pocket costs |
| Doctor choice | Network-based (HMO/PPO) | Any Medicare-accepting provider nationwide |
| Referrals needed | Often required (HMO plans) | No |
| Prescription drugs | Usually included | Requires separate Part D plan |
| Dental, vision, hearing | Often included | Not included (separate purchase) |
| Prior authorization | May be required for some services | No |
| Travel coverage | Limited to plan service area | Works nationwide, some Medigap plans cover foreign travel |
| Best for | People who want lower premiums and extra benefits | People who want maximum flexibility and predictable costs |
For a deeper comparison, read our full guide: Medicare Advantage vs. Medigap: Which Is Right for You?
Pros and Cons of Medicare Advantage
Advantages
- Lower premiums: Many plans have $0 monthly premiums beyond your Part B payment
- Extra benefits: Dental, vision, hearing, fitness, and transportation often included
- Out-of-pocket cap: Annual maximum protects you from catastrophic costs
- All-in-one coverage: Medical, drug, and extra benefits in a single plan
- Coordinated care: Plans may help manage chronic conditions and preventive care
Disadvantages
- Network restrictions: You may need to use in-network providers, limiting your choices
- Prior authorization: Some treatments require plan approval, which can cause delays
- Geographic limitations: Plans are tied to a service area; coverage may not work if you travel or move
- Annual changes: Plans can change benefits, costs, or provider networks each year
- Returning to Medigap can be difficult: If you leave Medicare Advantage for Original Medicare after your initial enrollment, Medigap insurers may require medical underwriting
For an honest look at the downsides, see our article: Why Medicare Advantage Plans Are Bad (Or Are They?)
When Can You Enroll in Medicare Advantage?
You can enroll in or change Medicare Advantage plans during specific enrollment periods:
Initial Enrollment Period (IEP): A 7-month window around your 65th birthday (3 months before, your birthday month, and 3 months after). This is when most people first become eligible. Learn more in our Turning 65 Medicare Guide.
Annual Enrollment Period (AEP): October 15 through December 7 each year. During AEP, you can switch from Original Medicare to Medicare Advantage, change MA plans, or switch back to Original Medicare. Changes take effect January 1.
Medicare Advantage Open Enrollment Period (OEP): January 1 through March 31 each year. If you are already in a Medicare Advantage plan, you can switch to a different MA plan or return to Original Medicare during this window.
Special Enrollment Periods (SEPs): Certain life events, such as moving to a new area, losing employer coverage, or qualifying for Medicaid, may trigger a special enrollment period outside the regular windows.
How to Choose the Right Medicare Advantage Plan
Choosing the right plan requires evaluating several factors:
- Check your doctors: Verify that your current physicians and preferred hospitals are in the plan’s network
- Review your medications: Make sure the plan’s formulary covers your prescriptions at an affordable tier
- Compare total costs: Look beyond the monthly premium. Factor in deductibles, copays, coinsurance, and the out-of-pocket maximum
- Evaluate extra benefits: Compare dental, vision, hearing, and other extras that matter to you
- Check star ratings: Medicare rates plans on a 1 to 5 star scale based on quality and member satisfaction. Look for 4-star or higher plans
- Consider your health needs: If you have chronic conditions or see specialists frequently, make sure the plan supports your care needs
- Review the service area: Confirm the plan is available where you live and covers areas where you travel regularly
2026 Medicare Advantage Changes to Know
Several important updates affect Medicare Advantage plans in 2026:
- Part D out-of-pocket cap: Annual prescription drug spending is now capped at $2,100, providing significant savings for people with high drug costs
- $35 insulin cap continues: Monthly insulin costs remain capped at $35 with no deductible
- Free vaccines: All ACIP-recommended adult vaccines remain covered at $0 cost under Part D
- Market changes: Some major insurers have reduced their coverage areas for 2026. Check that your current plan is still available in your area
- Automatic prescription payment plan re-enrollment: If you use the Medicare Prescription Payment Plan, you are now automatically re-enrolled each year
The Bottom Line
Medicare Advantage can be an excellent choice if you want lower out-of-pocket costs, extra benefits, and the convenience of an all-in-one plan. However, it comes with trade-offs, including network restrictions, prior authorization requirements, and annual plan changes that require you to review your coverage every year.
The right Medicare choice depends on your individual health needs, budget, preferred doctors, and lifestyle. If you value flexibility and seeing any doctor nationwide, Original Medicare with a Medigap supplement may be a better fit. If you want lower premiums and extra benefits like dental, vision, and hearing, Medicare Advantage could save you money.
Either way, understanding your options is the first step toward making a confident decision about your healthcare coverage in retirement.
Frequently Asked Questions
What is the difference between Medicare and Medicare Advantage?
Original Medicare is the federal government program (Part A and Part B) that covers hospital and medical services. Medicare Advantage (Part C) is an alternative way to receive those same benefits through a private insurance company, often with extra benefits like dental and vision but with network restrictions.
Is Medicare Advantage free?
Many Medicare Advantage plans have $0 monthly premiums, but you must still pay your Medicare Part B premium ($185/month for most people in 2026). You will also have copays, coinsurance, and deductibles depending on the plan.
Can I switch from Medicare Advantage back to Original Medicare?
Yes. You can switch back during the Annual Enrollment Period (October 15 to December 7) or the Medicare Advantage Open Enrollment Period (January 1 to March 31). However, you may face medical underwriting if you want to purchase a Medigap policy after leaving Medicare Advantage.
Do Medicare Advantage plans cover prescriptions?
Most Medicare Advantage plans include Part D prescription drug coverage. These are called Medicare Advantage Prescription Drug (MAPD) plans. Always check the plan’s formulary to ensure your medications are covered.
What happens if my doctor is not in the network?
With an HMO plan, you generally cannot see out-of-network providers except in emergencies. With a PPO plan, you can see out-of-network providers but will pay higher costs. Before enrolling, verify that your preferred doctors participate in the plan’s network.
How does Medicare Advantage compare to Medigap?
Medicare Advantage offers lower premiums and extra benefits but limits your choice of providers. Medigap supplements cost more monthly but let you see any Medicare-accepting provider nationwide with more predictable out-of-pocket costs. The right choice depends on your healthcare needs, budget, and how much flexibility you want.