What company has the highest rated Medicare Advantage plan?

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Aetna gets the highest average star ratings and member experience ratings (weighted by enrollment) among major companies selling Medicare Advantage plans in the most states, according to NerdWallet.

Top-Rated Medicare Advantage Companies (2026)

  • Aetna (CVS Health): Best for government quality ratings and high average star ratings from the Centers for Medicare & Medicaid Services (CMS), with $0-premium plans available to over 80% of beneficiaries.
  • Humana: Best major national company overall, scoring highest on NerdWallet's rubric among large insurance companies with plans in the majority of states.
  • Devoted Health: Recognized by U.S. News & World Report for high marks in overall performance, screening and prevention, and care continuity.
  • Kaiser Permanente: Consistently earns top 5-star government ratings from CMS for its regional plans (such as receiving five 5-star designations), and scores high on regional member satisfaction.
  • UnitedHealthcare: The largest Medicare Advantage insurer by enrollment size, offering massive provider networks though individual plan ratings vary by local market.

Note: Medicare Advantage quality and star ratings vary significantly by your specific county and zip code. You can look up exact star ratings for plans available in your area directly through the official Medicare Plan Finder.

Who has the best overall Medicare Advantage plan?

There is no single "best" overall Medicare Advantage plan nationwide, but major national insurers like Humana, Aetna, and UnitedHealthcare consistently rank highest across major consumer and industry evaluations for 2026.

⚖️ Top-Rated National Providers

  • ✅ Humana
    • Best for: Member experience and wellness programs
    • Pros: High customer satisfaction scores, extensive $0-premium availability, strong extra benefits.
    • Cons: Prescription drug ratings slightly below national average.
  • ✅ Aetna
    • Best for: Government quality ratings and low costs
    • Pros: High CMS star ratings, $0 premiums for 80%+ of beneficiaries, robust dental/vision/hearing extras.
    • Cons: Regional availability can vary compared to giant networks.
  • ✅ UnitedHealthcare
    • Best for: Provider network size and availability
    • Pros: Largest nationwide network (1.7M+ providers), wide AARP-branded plan access, strong preventive care tracking.
    • Cons: Out-of-pocket maximums can be higher on basic tiers.
  • ✅ Devoted Health / HealthSpring (Cigna)
    • Best for: Specialized care continuity and low-cost alternatives
    • Pros: Top marks for screening/prevention, highly affordable average premiums.
    • Cons: Limited geographic availability in specific states.

🔎 How to Evaluate Your Options

  • Check Local Availability: National rankings mean little if a carrier doesn't operate in your specific zip code.
  • Verify Your Doctors: Ensure your primary care physicians and preferred local hospitals are in-network.
  • Compare Hidden Costs: Look beyond the $0 monthly premium to evaluate co-pays, deductibles, and annual out-of-pocket maximums (MOOP).
  • Review Star Ratings: Aim for plans with 4 to 5 stars from the Centers for Medicare & Medicaid Services (CMS).

Which Medicare Advantage plan denies the most claims?

Centene and UnitedHealthcare deny the highest share of prior authorization requests among major Medicare Advantage insurers, according to analyses from Kaiser Family Foundation (KFF) and Newsweek.

Prior Authorization Denial Rates by Insurer

Recent federal and industry data tracking private Medicare Advantage organizations show varying denial percentages for initial pre-approval requests:

  • Centene: ~13.6% denial rate (with a high appeal overturn rate of over 93%).
  • CVS Health (Aetna): ~11% denial rate.
  • Kaiser Permanente: ~10% denial rate.
  • UnitedHealthcare: ~9.1% to 17% denial rate depending on the specific service category and year analyzed, representing the highest overall volume of denials due to its massive market share.
  • Cigna: ~7.7% denial rate.
  • Humana: ~3.5% to 6.8% denial rate.

Post-Acute and Inpatient Care Denials

Federal watchdog reports from the U.S. Department of Health and Human Services (HHS) highlight that large insurers—specifically UnitedHealth, Humana, and CVS—disproportionately deny specialized post-acute care. They reject more than 70% of long-term care hospital requests and over 50% of inpatient rehabilitation facility requests. However, a very high percentage of these specific denials (up to 95% for skilled nursing care) are overturned when patients or providers formally appeal.

Which company is the largest provider of Medicare Advantage plans?

UnitedHealthcare (the insurance division of UnitedHealth Group) is the largest provider of Medicare Advantage plans in the United States.

Market Share and Details

  • Market Share: UnitedHealthcare covers roughly one-third (about 29% to 33%) of all Medicare Advantage enrollees nationwide.
  • Total Enrollees: The company serves close to 10 million Medicare Advantage members.
  • Runner-Up: Humana is the second-largest national provider, holding about 18% to 19% of the market share.
  • Footprint: Both Humana and UnitedHealthcare operate massive footprints spanning thousands of U.S. counties.

Which Medicare Advantage plans have the lowest ratings?

Government and consumer satisfaction data show that plans receiving the lowest overall ratings include specific regional and national contracts scoring a 2-star or low satisfaction mark.

Lowest-Rated Plans by Government Star Ratings

The Centers for Medicare & Medicaid Services (CMS) assigns star ratings from 1 to 5 stars. For recent evaluations, several national and regional insurance contracts received the lowest baseline score of a 2-star rating:

  • El Paso Health
  • Clear Spring Health
  • American Health Advantage of MS
  • HCSC (Blue Cross Blue Shield plans in Illinois, New Mexico, Oklahoma, and Texas)
  • Certain contracts under major providers like Aetna and UnitedHealthcare

Lowest-Rated for Member Satisfaction

In consumer insight studies like the J.D. Power Medicare Advantage satisfaction rankings, overall member satisfaction averages have trended downward due to administrative friction and coverage limits. Specific low-ranking products vary heavily by geographic market, but lower scores frequently affect regional subsidiaries or specific partner offerings like select Humana, Centene (Wellcare), and co-branded plans depending on the state.

Red Flags of Low-Rated Plans

Plans rated below 3 stars or flagged as low-performing typically exhibit:

  • High out-of-pocket costs or steep maximum spending caps
  • Frequent network changes or limited local physician availability
  • Poor customer service and complex prior authorization rules

Is SCAN Really the Best Medicare Advantage Plan? Here’s the Truth.

9 related questions found

Why stay away from Medicare Advantage plans?

People advise staying away from Medicare Advantage plans because they often restrict care through narrow networks, require prior approvals, and can lead to high out-of-pocket costs when serious health needs arise.

Restricted Provider Networks

  • Local limitations: Unlike Original Medicare, which is accepted nationwide, Medicare Advantage plans use regional or local networks of doctors and hospitals.
  • HMO rules: Many plans require referrals from a primary care doctor before you can see a specialist.
  • Changing rosters: Networks can change from year to year, meaning your preferred doctor might suddenly be out-of-network.

Prior Authorization Delays and Denials

  • Approval hurdles: Plans often require prior authorization (advance permission) for surgeries, imaging, medical equipment, and specialty drugs.
  • Care delays: Waiting for approvals can stall urgent medical treatments.
  • Claim denials: Private insurers may deny coverage for services that would normally be approved under Original Medicare.

Financial Risks for Serious Illnesses

  • High out-of-pocket maximums: Annual limits can reach up to $9,250 for in-network care, which can be devastating during a major health crisis.
  • Expensive coinsurance: Treatments like chemotherapy or specialized injections often carry a 20% coinsurance rate under these plans.
  • No Medigap compatibility: You cannot combine a Medicare Advantage plan with a Medicare Supplement (Medigap) policy to help cover these extra costs.

Travel and Lifestyle Restrictions

  • No coverage while traveling: Routine care outside your local service area is generally not covered, making it difficult for frequent travelers or "snowbirds".
  • Difficult switching back: If you try to return to Original Medicare later, buying a Medigap supplement policy may require medical underwriting, meaning you could be denied or charged more based on your health.

Which is better, Medicare Advantage Humana or UnitedHealthcare?

Neither Humana nor UnitedHealthcare is universally better; the right choice depends on your local zip code, specific health needs, and preferred doctors.

Humana Medicare Advantage

  • Strengths: Often praised for strong wellness programs, low premiums, competitive prescription drug costs, and popular fitness perks like SilverSneakers.
  • Considerations: CMS (Centers for Medicare & Medicaid Services) quality ratings can sometimes trail behind competitors.

UnitedHealthcare Medicare Advantage

  • Strengths: Features a massive national provider network and frequently co-brands plans with AARP, offering $0 premium options across most states and robust digital apps.
  • Considerations: Customer satisfaction scores vary, and national network size does not guarantee your specific local doctor participates.

How to Choose

  • Check local availability: Plans and benefits change drastically by county and zip code.
  • Verify your doctors: Confirm your primary care physicians and specialists accept the exact plan number before enrolling.
  • Compare costs: Look closely at copayments, deductibles, and maximum out-of-pocket limits rather than just the brand name.

What is better than a Medicare Advantage plan?

Original Medicare combined with a Medicare Supplement (Medigap) plan and a separate Part D prescription drug plan is widely considered better than a Medicare Advantage plan if you want total freedom in choosing doctors and predictable medical costs.

Why Original Medicare + Medigap Can Be Better

  • See any doctor: You can visit any doctor or hospital in the United States that accepts Medicare. You do not need network approvals or referrals to see specialists.
  • Fewer service delays: Traditional Medicare rarely requires prior authorization for treatments. Medicare Advantage frequently requires approval beforehand, which can delay care.
  • Predictable bills: Medigap plans pay for many of the out-of-pocket costs left behind by Original Medicare, like deductibles, copays, and coinsurance.
  • Easier nationwide travel: Your coverage travels with you anywhere in the U.S. unlike local network-bound Advantage plans.

The Trade-Offs

  • Higher monthly costs: Medigap plans usually have a higher monthly premium than most Medicare Advantage plans, which often feature $0 or low premiums.
  • No extra perks included: Medigap does not bundle dental, vision, or hearing care. You also have to buy a separate Part D plan for prescription drugs.

Which insurance companies are dropping Medicare Advantage plans?

Major health insurance companies are scaling back, reducing service areas, or dropping specific Medicare Advantage (MA) plans due to rising medical costs and lower federal reimbursements.

Major Insurers Retrenching or Dropping Plans

  • Humana: Retrenching significantly, dropping plans affecting roughly 600,000 members as it exits unprofitable counties and lowers its geographic footprint.
  • UnitedHealthcare: Pulling back service from hundreds of counties and reducing plan offerings to manage financial pressures.
  • Aetna (CVS Health): Reducing its Medicare Advantage and prescription drug plan footprint across multiple states and counties.
  • Blue Cross Blue Shield of Kansas City (Blue KC): Exiting the Medicare Advantage market entirely.
  • Premera Blue Cross: Completely exited the Medicare Advantage market.
  • Clear Spring Health & Providence Health Plan: Full or partial market withdrawals and discontinuation of specific regional lines.

Why Insurers and Hospitals Are Pulling Back

  • Insurers: Citing government funding adjustments by the Centers for Medicare & Medicaid Services (CMS) and higher medical care utilization by seniors.
  • Health Systems: Numerous major hospitals and health networks (such as Mayo Clinic and Mass General Brigham) are dropping specific Medicare Advantage network contracts due to high rates of prior authorization denials and slow insurer payments.

Why do brokers push Medicare Advantage plans?

Brokers often push Medicare Advantage plans because private insurers offer significantly higher financial compensation, administrative bonuses, and renewal incentives for these plans compared to Original Medicare or standalone options.

💰 Financial Incentives & Commissions

  • Higher initial and ongoing baseline commission caps set by carriers for Medicare Advantage.
  • Very low or declining commissions for standalone Part D prescription drug plans.
  • Lucrative volume-based enrollment bonuses and marketing perks from private insurance companies.

📋 Ease of Sale & Bundling

  • Simple pitch of a "$0 premium" bundle that includes extra perks like dental, vision, and hearing.
  • No medical underwriting required, making enrollment fast and guaranteed issue compared to some Medigap scenarios.
  • Zero commission paid for assisting clients with Original Medicare Parts A and B alone.