Best Medicare Advantage Plans in California (November 2026)

Navigating healthcare options can feel overwhelming, especially when trying to balance your medical needs with a strict budget. Medicare Advantage (also known as Medicare Part C) plans cover all the essential services that Original Medicare (Part A and Part B) provides, while often folding in prescription drug coverage and helpful extra benefits. Because of this comprehensive approach, Medicare Advantage plans have become an increasingly popular choice for those seeking peace of mind without breaking the bank.

If you call California home, you have a wealth of options when evaluating Medicare Advantage plans. However, with so many massive insurance companies competing for your attention, cutting through the noise to find the specific providers and plans that genuinely align with your life and health needs is crucial.

California boasts a deeply diverse market of Medicare Advantage plans from household-name insurers. To help guide you through this critical decision, we’ll cut straight to the facts—comparing drug coverage, real member experiences, and the availability of plans that respect your wallet. We'll outline hard data for select providers, including those all-important monthly premiums and potential out-of-pocket costs, so you can make an empowered choice.

Compare Medicare Advantage Providers in California

Before diving into the numbers for California's major Medicare Advantage providers, it's vital to understand the yardsticks used to measure a plan's true value:

CMS Star Rating: Published annually by the Centers for Medicare & Medicaid Services (CMS), this rating objectively measures the quality of health and drug services members receive. Ranging from 1 (poor) to 5 (excellent) stars, this overall score weighs up to 40 distinct performance metrics and serves as a highly reliable benchmark when comparing plans.

Monthly Premium: This is the fixed dollar amount you pay out of your own pocket to a provider each month to keep your health coverage active.

In-Network Max Out-of-Pocket Amount: A critical financial safety net, this is the absolute maximum you will be required to pay for covered, in-network services during a specific coverage period (typically one calendar year).

Note: The statistics provided in the charts below are calculated using the most accurate plan data specific to the state of California.

National Providers

Regional Providers

Keep in mind that while smaller, regional providers may boast top-tier CMS ratings, their network of approved physicians and hospitals is typically much narrower than those of the massive national providers.

Top-Rated Medicare Advantage Providers in California

Humana

Humana stands out as a colossal entity in the U.S. health insurance sector, delivering a vast array of healthcare products, with a heavy emphasis on Medicare.

According to December 2021 data, Humana was the 6^th largest provider of Medicare Advantage plans in California, serving roughly 115,000 enrollees (a 4% market share). On a national scale, they hold the position of the second largest provider of Medicare Advantage plans, claiming a massive 17.8% of the overall market.

Kaiser Permanente

Headquartered right in Oakland, CA, Kaiser Permanente operates as one of the largest not-for-profit health plans in the country, supporting over 12.6 million members nationwide with a formidable workforce of nearly 24,000 physicians and 68,000 nurses.

Crucially for local residents, Kaiser Permanente is the undisputed heavyweight champion of Medicare Advantage plans in California, commanding a dominant 42% market share as of December 2021.

Sharp Health Plan

Rooted deeply in its community since 1992, Sharp Health Plan is a nonprofit, commercial insurer based in San Diego that exclusively serves San Diegans. Serving over 145,000 members, Sharp consistently ranks among the most highly rated Medicare options for California residents looking for localized care.

United Healthcare

UnitedHealthcare is a ubiquitous national provider of health insurance. They currently lead the fiercely competitive Medicare Advantage market, boasting a 28.5% national market share and serving over 9 million enrollees across the United States.

They also hold the title for the fastest-growing MA provider, expanding by 12.7% year-over-year from 2022 to 2026 (outpacing the second-fastest, Humana, at 10.1%).

Aetna

Operating as a major subsidiary of the CVS Health Corporation, Aetna is another formidable national health insurance provider.

As of March 2026, Aetna cemented its status as the third-largest provider of Medicare plans overall (with a 10.6% market share) and emerged as the largest provider of standalone Medicare prescription drug plans (capturing 27.2% of that specific market).

Alignment Health Plan

Based out of Orange County, Alignment Health Plan is dedicated to delivering high-quality service to Medicare Advantage members spread across 53 counties in six states.

Across its entire operating footprint, Alignment Health offers a portfolio of over 40 distinct, benefit-rich, and value-oriented plans.

SCAN Health Plan

Founded in 1977, SCAN Health Plan is a steadfast not-for-profit Medicare Advantage provider headquartered in Long Beach, California. They currently provide robust Medicare coverage to more than 285,000 members across California, Arizona, New Mexico, Texas, and Nevada.

As of December 2021, SCAN stood as the third-largest Medicare Advantage provider in California, holding an approximate 7% market share.

Wellcare

Wellcare is a sprawling healthcare enterprise offering insurance solutions to Americans from coast to coast. Medicare Advantage remains one of Wellcare’s flagship products, earning them a 4.3% national market share.

By 2026, they also ranked as the second-largest provider of prescription drug plans (PDPs) with a 19.9% market share. Like their massive competitors, Wellcare maintains a formidable presence in California, backed by deep, statewide connections to hospitals and physicians.

Anthem Blue Cross

Anthem Blue Cross (California) operates as a subsidiary of Anthem, Inc., firmly establishing itself as one of the largest health insurance entities in the United States.

Looking at market share alone, Anthem Blue Cross ranks as the third-largest Medicare Advantage provider for eligible Californians, capturing about 7% of the market as of December 2021.

How to Choose the Best Medicare Advantage Plan

Selecting the right Medicare Advantage plan—one that truly addresses your specific health realities and financial constraints—is a deeply personal and critical decision. Let’s break down the necessary steps to make this complex process as clear as possible.

From honestly assessing your physical needs to diving into the fine print of plan documents, our objective is to arm you with the factual knowledge needed to confidently navigate your options.

1. Assess Your Healthcare Needs: Take a hard look at your medical realities. Tally up your prescription medications, estimate your annual doctor visits, and factor in any specialized treatments or therapies you require.
2. Review Plan Options: Investigate the Medicare Advantage plans available in your specific zip code. Compare the depth of coverage, the out-of-pocket costs, and the extra benefits, prioritizing plans offered by stable, reputable insurers.
3. Check Network Providers: Never assume your doctors are covered. Verify that your preferred primary care physicians, specialists, and local hospitals are firmly inside the plan's network to avoid massive out-of-network bills.
4. Evaluate Drug Coverage: If you rely on daily medications, you must scrutinize each plan's formulary (their list of covered drugs). Pay close attention to the assigned tiers, which dictate your copayments, coinsurance, and deductibles.
5. Consider Additional Benefits: Medicare Advantage plans frequently bundle in extras that Original Medicare ignores, such as routine dental, vision care, or gym memberships. Weigh these perks based on what you will actually use.
6. Examine Cost Structures: Do the math. Compare the monthly premiums, the annual deductibles, and the per-visit copayments. Ensure these numbers align with a realistic budget based on your expected medical usage.
7. Check Star Ratings: Always consult Medicare's official Star Ratings. Plans boasting higher ratings have objectively proven to deliver better care, superior customer service, and more reliable health outcomes.
8. Understand Plan Rules and Restrictions: Read the fine print. Know exactly what the plan demands from you, such as prior authorizations for procedures or mandatory referrals before seeing a specialist.
9. Review Out-of-Pocket Maximums: Identify the absolute maximum you could be forced to pay in a worst-case scenario. This cap is your financial shield against catastrophic medical debt.
10. Get Personalized Assistance: If you're feeling stuck, reach out to CoverRight for objective, personalized support. We're here to cut through the confusion and guide you smoothly through enrollment.

Because every individual's health and financial situation is completely unique, the "best" Medicare Advantage plan is entirely subjective. If you are grappling with specific questions about your personal circumstances, we strongly suggest scheduling a free consultation with a licensed insurance agent.

Furthermore, if you are actively scrutinizing your prescription drug expenses, we highly advise discussing generic alternatives with your doctor. When available, the generic version of a drug will dramatically reduce your costs compared to the brand-name equivalent.

What Medicare Advantage Plans Cover

Offered exclusively by Medicare-approved private insurance corporations, Medicare Advantage plans (or Medicare Part C) provide an alternative route for receiving your Medicare benefits.

By law, these plans must deliver all the basic coverage provided by Original Medicare (Part A and Part B), while frequently throwing in additional perks. Here is a factual summary of what you can expect a Medicare Advantage plan to cover:

• Hospital Coverage (Part A): This crucial component covers your inpatient hospital stays, necessary care in a skilled nursing facility, hospice care, and specific forms of home health care.
• Medical Coverage (Part B): This covers the day-to-day medical necessities: outpatient care, standard doctor visits, vital preventive services, and additional home health care.
• Prescription Drug Coverage (Part D): A major selling point is that many Medicare Advantage plans integrate prescription drug coverage directly into the plan. If yours does not, you generally have the option to purchase a standalone Medicare Part D plan.
• Additional Benefits: Depending entirely on the specific plan you select, Medicare Advantage can offer valuable benefits that Original Medicare ignores. This frequently includes routine dental work, vision exams, hearing aids, and specialized fitness or wellness programs.
• Out-of-Pocket Maximums: Unlike Original Medicare, these plans are legally required to feature an annual cap on your out-of-pocket medical expenses, offering vital financial protection against catastrophic illness or injury.

It is imperative to recognize that exact coverage details fluctuate wildly between different Medicare Advantage plans. You must meticulously review official plan documents, specifically the Summary of Benefits, to ensure it meets your real-world needs.

Finally, never forget: enrolling in a Medicare Advantage plan does not absolve you from paying your standard Medicare Part B premium, which you must continue to pay alongside any premium charged by your Advantage plan.

When to Enroll for Medicare Advantage Plans in California

Your Initial Enrollment Period triggers when you first become eligible for Medicare, which is generally around your 65th birthday. Later, the Annual Enrollment Period (AEP) opens every year from October 15 to December 7, granting you the crucial window to switch, drop, or formally add a Medicare Advantage plan.

Additionally, the Medicare Advantage Open Enrollment Period, running from January 1 to March 31, allows current enrollees one chance to change their Advantage plan or revert entirely back to Original Medicare.

Life happens, and Special Enrollment Periods can be triggered by major events—such as moving out of your plan's service area, suddenly losing your employer-provided coverage, or qualifying for Medicaid. Staying acutely aware of these rigid deadlines is the only way to maintain control over your Medicare Advantage coverage in California.

??Medicare Advantage vs. Medigap

The choice between a Medicare Advantage (Part C) plan and a Medigap (Medicare Supplement) policy is a fundamental fork in the road for your healthcare. Medicare Advantage packages Part A and Part B together, heavily leaning into extras like built-in prescription drug coverage.

These unified plans are highly prized for their affordability and simple, all-in-one administration, even though they demand you stay within a defined network of doctors and hospitals.

Unsurprisingly, Medicare Advantage is a dominant force in California. As of May 2026, approximately 50% of all Medicare-eligible residents in the state chose to entrust their care to private Medicare Advantage plans.

Conversely, Medigap policies function as a financial backstop to Original Medicare, explicitly designed to pay the out-of-pocket costs (like deductibles and 20% coinsurance) that Original Medicare leaves behind. While Medigap grants you the ultimate freedom to see any doctor who accepts Medicare nationwide, it commands significantly higher monthly premiums.

Here is an objective breakdown of how the two stack up:

Ultimately, your decision comes down to what lets you sleep at night: Medicare Advantage offers cost-effective, bundled convenience with strict network rules, while Medigap provides total geographic and provider freedom for a predictably higher monthly price tag.

All Medicare Advantage Providers in California for 2026

• Aetna Medicare
• Alignment Health Plan
• Anthem Blue Cross
• Aspire Health
• Astiva Health
• Blue Shield of California
• Brand New Day
• CCA Health California
• Central Health Medicare Plan
• Chinese Community Health Plan
• Clever Care Health Plan
• Humana
• Imperial Health Plan of California
• Kaiser Permanente
• Molina Healthcare of California
• Providence Medicare Advantage Plans
• SCAN Health Plan
• Sharp Health Plan
• UnitedHealthcare
• Wellcare
• Western Health Advantage