Introduction
Choosing Medicare Advantage is often a real struggle. It can be a smart fit for some people and a frustrating mismatch for others, depending on your doctors, prescriptions, how often you use care, your budget, how much you travel, and how comfortable you are with managed-care rules.
KFF's 2026 enrollment update puts enrollment at 35.2 million of 64.2 million beneficiaries with Parts A and B, or 55%.
Even so, you still need to test fit against your own care needs and budget. This guide explains how the plans work, weighs the main pros and cons, and shows who tends to fit. It ends with a checklist for comparing Medicare Advantage with Original Medicare and Medigap.
Key Takeaways
- Medicare Advantage delivers Part A and Part B through a private plan, and most plans add Part D drugs.
- Benefits include coordination, extra benefits, and a yearly medical out-of-pocket cap; drawbacks include networks and prior authorization.
- A $0 premium isn't the full cost, so compare worst-case annual exposure.
- Fit depends on your doctors, hospitals, drugs, pharmacies, and travel.
What Is Medicare Advantage and How Does It Work?
How Medicare Advantage fits into Medicare
Medicare Advantage, also called Part C, is another way to get Part A and Part B benefits. A private insurer approved by Medicare runs the plan instead of the federal government's Original Medicare.
You generally keep paying the Part B premium, which is $202.90 per month in 2026 per CMS figures. On top of that, you follow the plan's own rules for premiums, deductibles, copays, coinsurance, and covered services.
How coverage and plan costs are organized
Most individual plans (89% in 2026) include Part D drug coverage. Plans without it are called MA-only. Drugs covered, pharmacies, networks, and extra benefits all vary by plan and location.
The plan premium isn't your total spending. Medicare Advantage plans carry an annual limit on covered Part A and Part B services. For 2026, CMS caps it at $9,250 in-network and $13,900 combined in and out of network. That limit excludes Part D drug spending and the Part B premium.
Common plan types
- HMO: generally network-only, with referrals usually required. Emergencies and urgent care are exceptions.
- PPO: covers some out-of-network care, usually at higher cost, with no referrals.
- PFFS: you can see Medicare-approved providers who agree to the plan's payment terms.
- SNP: for specific groups, such as people with both Medicare and Medicaid (D-SNP), certain chronic conditions (C-SNP), or institutional-level care (I-SNP). All include Part D.
Documents to review
Use these to confirm how a specific plan works:
- Evidence of Coverage: covered services and what you pay
- Provider directory: which doctors and hospitals are in the network
- Drug formulary and pharmacy network: which drugs and pharmacies are covered
- Annual Notice of Change: changes to costs, benefits, and networks, which arrives before January
Medicare Advantage Pros and Cons: What to Weigh
Potential advantages
One plan can simplify things. Instead of juggling Original Medicare, a separate drug plan, and possibly a supplement, you deal with one card and one insurer for most needs.
Premiums can be low. About 67% of MA-PD plans charge no premium beyond Part B in 2026, according to KFF's plan analysis. The annual cap also limits covered medical costs. Cost-sharing, noncovered services, and drug costs still apply.
Extra benefits are common. Share of individual plans offering each benefit in 2026:
| Benefit | Share of plans |
|---|---|
| Vision | 99% |
| Dental | 98% |
| Hearing | 98% |
| Fitness | 93% |
| Medical transportation | 24% |
Limits, eligibility rules, and provider restrictions differ. A dental benefit with a low annual cap may not cover major work.
Potential drawbacks
Networks and referrals. Lower premiums often come with narrower provider access. Nonemergency out-of-network care can cost more or not be covered at all, especially in an HMO.
Prior authorization. Plans may require approval for certain tests, procedures, equipment, or post-acute care. KFF data for 2024 shows:
- Nearly 53 million prior authorization determinations
- 7.7% of determinations denied
- Only 11.5% of denials appealed
- 80.7% of appealed denials overturned
If a service is denied, appeal it.
Since January 2026, CMS requires decisions within 72 hours for expedited requests and 7 calendar days for standard ones. Drug authorizations are excluded.
Costs are harder to predict. Copays and coinsurance apply when you get care. Drug costs depend on formulary tier and pharmacy. Plans can also change premiums, benefits, networks, and formularies each year, so read the Annual Notice of Change.
Who Might Medicare Advantage Fit Best?
Signs a plan may be a good fit
- You like an all-in-one plan and are comfortable following plan procedures.
- Your doctors, hospitals, specialists, pharmacies, and medications are all in the plan's network and formulary.
- You want dental, vision, hearing, or wellness benefits.
- You value predictable copays and a defined ceiling on covered medical spending.
Know what the ceiling means. It covers Part A and Part B services only, not drugs or the Part B premium.
Situations that call for closer comparison
- Frequent travelers or multi-state residents. HMO exceptions for emergencies, urgent care away from home, and temporary dialysis don't give routine nationwide access.
- People who use specialists or out-of-area providers. Original Medicare offers the broadest access to providers who accept Medicare.
- People with employer or union coverage. Joining a plan can end that coverage for you and your dependents, sometimes permanently.
- People with VA, TRICARE, or Medicaid. VA care can coexist with Medicare Advantage, but the plan won't pay at VA facilities. TRICARE For Life stays in place with Medicare as primary. Medicaid users should look at D-SNPs.
- People weighing Original Medicare with Medigap. Medigap works with Original Medicare, not Medicare Advantage. Your six-month Medigap Open Enrollment Period starts the first month you're 65 or older and enrolled in Part B. After that window, insurers may deny coverage or charge more based on health unless a guaranteed-issue right applies.
Questions to answer before enrolling
List these before comparing any plan:
- Which doctors and hospitals do you use?
- What prescriptions and dosages do you take, and at which pharmacies?
- What procedures might you need soon?
- Where do you travel?
- What monthly budget and worst-case annual cost can you handle?
- How do you feel about referrals and prior authorization?
The best plan matches how you actually use care and how much financial risk you can take. It isn't automatically the lowest premium or the longest list of extras.
How to Compare Medicare Advantage With Other Medicare Options
Compare the full structure, not just the premium
Line up Medicare Advantage against Original Medicare plus Part D and Medigap on these points:
- Provider access and referrals
- Prior authorization
- Prescription coverage
- Extra benefits
- Premiums and cost-sharing
- Annual spending limits
- Travel
Original Medicare has no annual out-of-pocket maximum without supplemental coverage. In 2026 it carries a $283 Part B deductible and a $1,736 Part A deductible per benefit period.
Medicare Advantage and Medigap aren't interchangeable. Advantage changes how Part A and B benefits are delivered. Medigap supplements certain costs under Original Medicare, and newer policies don't include drugs, so you'd need a separate Part D plan.
Use a plan-by-plan checklist
- Confirm each doctor and facility with both the plan and the provider.
- Enter every medication and dosage into Medicare's Plan Finder and confirm preferred pharmacies.
- Review the Evidence of Coverage and Annual Notice of Change.
- Compare estimated yearly costs and worst-case exposure, not just monthly premiums.
- Check CMS star ratings as one factor. They're contract-level, so they don't capture everything about a specific plan.
Understand enrollment and get decision support
- Initial Enrollment Period: about seven months around your 65th birthday month. Medicare Advantage requires Parts A and B.
- Annual Enrollment Period: October 15 to December 7, with coverage starting January 1.
- MA Open Enrollment Period: January 1 to March 31, only for current Medicare Advantage members who want to switch plans or return to Original Medicare.
- Special Enrollment Periods: triggered by events such as moving out of the service area or losing qualifying coverage.
Confirm current dates and eligibility on Medicare.gov.
If you live in Virginia or West Virginia, Muneris Benefits is an independent brokerage whose licensed agents help people moving onto Medicare compare coverage and understand plan details. They can't promise a specific plan, savings, or availability, so confirm final coverage in official Medicare and plan documents.
CMS rules also bar agents from cold-calling about Medicare Advantage, so you'll need to reach out yourself. Free counseling is available through Virginia's VICAP and West Virginia's SHIP.
Frequently Asked Questions
What is a Medicare Advantage plan and how does it work?
Medicare Advantage (Part C) is a way to receive Part A and Part B benefits through a private, Medicare-approved insurer. Most plans also include Part D drug coverage.
What does Medicare Advantage cover?
It covers Part A and Part B services, usually prescription drugs, and often extras like dental, vision, and hearing. Exact benefits and limits vary by plan.
Are Medicare Advantage plans a good option compared to Original Medicare?
It depends on provider access, prescriptions, travel, budget, cost-sharing preferences, and comfort with plan rules. Neither option wins for everyone.
What are the differences between Medicare Advantage and Medigap?
Medicare Advantage is an alternative way to receive Medicare benefits. Medigap supplements Original Medicare and is generally paired with separate Part D coverage.
Do I need supplemental insurance if I have Medicare Advantage?
Medigap generally can't be sold to you while you're in Medicare Advantage. Compare the plan's built-in cost-sharing and benefits, and check any other coverage before enrolling.
What is the average monthly premium for a Medicare Advantage plan?
CMS's published 2026 baseline is $14.37, and KFF reports $15 for individual MA-PD enrollees. The Part B premium is extra, so check plan-specific costs on Medicare.gov.
