INSURING YOUR TRUST

Medicare Advantage Plans: What They Are, How They Work, and How to Choose the Right One

Medicare Advantage is now the most popular way for Americans to receive their Medicare benefits. As of 2026, more than half of all Medicare-eligible Americans are enrolled in a Medicare Advantage plan rather than Original Medicare — and in California, that number is even higher.

But popularity doesn't automatically mean it's the right choice for you. Medicare Advantage plans offer real advantages for many people, and real trade-offs for others. Understanding how they work — and how to compare them honestly — is the difference between a plan that saves you money and one that surprises you with unexpected costs when you need care most.

This page covers everything you need to know. And when you're ready to compare actual plans available in your zip code, Peter Joseph and the team at Joseph Insurance Broker are here to do that with you — at no cost.

What Is Medicare Advantage?

Medicare Advantage — also called Medicare Part C — is a type of health insurance plan offered by private insurance companies that are approved and regulated by Medicare. When you enroll in a Medicare Advantage plan, you're still in Medicare. Your plan simply delivers your Medicare benefits through a private insurer rather than directly through the federal government.

Every Medicare Advantage plan is required by law to cover everything that Original Medicare (Parts A and B) covers. Most plans go beyond that, bundling in benefits that Original Medicare doesn't offer at all — including dental, vision, hearing, fitness memberships, and in many cases prescription drug coverage through Part D.

You continue to pay your Part B premium each month (the standard amount in 2026 is $185/month), and your Medicare Advantage plan may charge an additional premium on top of that — or in many cases, $0 in additional premium. The trade-off for that low premium is typically a network of providers you'll need to use, and cost-sharing in the form of copays and coinsurance when you access care.

How Medicare Advantage Differs From Original Medicare

To understand Medicare Advantage, it helps to see it clearly against the alternative.

With Original Medicare, you can see any doctor, specialist, or hospital in the country that accepts Medicare — no referrals required, no network restrictions. It covers 80% of most approved medical costs after your deductible, leaving you responsible for the remaining 20% with no cap. That uncapped 20% is why most people on Original Medicare also carry a Medigap (Medicare Supplement) policy to limit their out-of-pocket exposure.

With Medicare Advantage, you gain a built-in out-of-pocket maximum — in 2026, plans are required to cap out-of-pocket costs at no more than $9,350 for in-network services. Once you hit that limit, your plan covers 100% of covered costs for the rest of the year. You also gain extra benefits and often lower monthly premiums. The trade-off is that you're generally limited to a provider network, and depending on the plan type, you may need referrals to see specialists.

Neither structure is universally better. They serve different kinds of people with different priorities.

Types of Medicare Advantage Plans

Not all Medicare Advantage plans work the same way. The plan type determines how you access care and how much flexibility you have.

HMO — Health Maintenance Organization

HMO plans are the most common type of Medicare Advantage plan, particularly in California. With an HMO, you select a primary care physician (PCP) who coordinates your care and provides referrals to specialists within the plan's network. Care received outside the network is generally not covered except in emergencies.

HMO plans tend to offer the lowest premiums and out-of-pocket costs, but they require the most discipline about staying in-network. For beneficiaries who have established relationships with doctors who are in-network, this structure works very well.

PPO — Preferred Provider Organization

PPO plans offer more flexibility. You can see any doctor or specialist — in-network or out-of-network — without a referral. In-network care costs less, but out-of-network care is covered at a higher cost-sharing level rather than not covered at all.

PPO plans are popular with people who travel frequently, see specialists at major medical centers, or simply want more control over their care without needing a referral every time. They typically carry somewhat higher premiums than HMOs.

HMO-POS — Point of Service

An HMO-POS is a hybrid. It operates like an HMO for most care but allows you to go out-of-network for certain services at a higher cost. These plans are less common but can offer a middle ground for people who want HMO-level premiums with a small safety valve for out-of-network access.

PFFS — Private Fee-for-Service

PFFS plans set their own payment rates for providers. Rather than a fixed network, any provider who agrees to the plan's terms can treat you. These plans are less common in urban areas like Southern California, where HMOs and PPOs dominate, but may appear in more rural parts of the state.

SNP — Special Needs Plans

Special Needs Plans are a specialized category of Medicare Advantage designed for people with specific conditions or circumstances. There are three types: Chronic Condition SNPs (C-SNPs) for people with conditions like diabetes, heart failure, or COPD; Dual Eligible SNPs (D-SNPs) for people who qualify for both Medicare and Medi-Cal; and Institutional SNPs (I-SNPs) for people living in long-term care facilities.

SNPs are worth knowing about because they can offer highly tailored benefits and care coordination for people who qualify — often at very low cost. If you or a family member has a serious chronic condition or qualifies for Medi-Cal, asking whether an SNP is available in your area is always worthwhile.

What Extra Benefits Do Medicare Advantage Plans Cover?

This is one of the most compelling aspects of Medicare Advantage — and one of the most variable. Plans differ significantly in what they include beyond basic Medicare coverage. Common extra benefits include:

Dental coverage: Many plans include preventive dental services (cleanings, X-rays, exams) and some include coverage for more extensive work like fillings, extractions, or dentures. The scope of dental coverage varies widely between plans and is one of the most important benefits to compare carefully.

Vision coverage: Routine eye exams and allowances toward eyeglasses or contact lenses are offered by many plans. Some plans partner with specific optical networks, so checking whether your current eye doctor participates matters.

Hearing coverage: Routine hearing exams and hearing aid allowances are increasingly common. Given that Original Medicare covers almost none of this, it's a meaningful benefit for many seniors.

Fitness memberships: Many Medicare Advantage plans include access to fitness programs like SilverSneakers, which provides gym memberships at thousands of locations nationwide including many in the Inland Empire.

Over-the-counter (OTC) benefits: Some plans provide a quarterly allowance — often loaded onto a debit card — that can be used for approved health-related purchases like vitamins, pain relievers, first aid supplies, and personal care items.

Transportation: Certain plans include a set number of one-way trips per year to medical appointments — a genuinely useful benefit for seniors who no longer drive or have limited mobility.

Telehealth: Most plans now include robust telehealth benefits, allowing you to consult with a doctor by video or phone without leaving home.

The catch — and it's important — is that these extra benefits vary significantly from plan to plan and change every year during the Annual Enrollment Period. A benefit that was included in your plan last year may be reduced or eliminated this year. This is one of the strongest arguments for reviewing your plan annually rather than simply auto-renewing.

Medicare Advantage in California: What Makes It Different

California has a particularly competitive Medicare Advantage market, which generally works in consumers' favor. There are more carriers, more plan options, and more $0-premium plans available in California than in most other states — especially in densely populated areas like the Inland Empire, Los Angeles County, Orange County, and San Diego.

Major carriers with strong Medicare Advantage presence in the Chino Hills and Inland Empire area include:

Humana — One of the largest Medicare Advantage carriers nationally, with strong network coverage across Southern California and a track record of competitive plan benefits. Peter Joseph has been recognized as a Humana Top Broker in the Inland Empire, reflecting deep familiarity with their plan portfolio.

SCAN Health Plan — A California-based nonprofit founded specifically to serve Medicare beneficiaries. SCAN has a strong local reputation, particularly for customer service and care coordination, and is deeply embedded in the Southern California provider community.

UnitedHealthcare — The largest Medicare Advantage carrier in the country, with broad national network coverage and a wide range of plan options including HMO, PPO, and SNP plans.

Aetna — Now part of CVS Health, Aetna offers competitive Medicare Advantage plans with strong pharmacy integration and a range of extra benefits.

Anthem Blue Cross — A major presence in California with a wide provider network including many of the region's major hospital systems.

Alignment Health — A newer, tech-forward carrier growing its footprint in Southern California with plans that emphasize personalized care coordination and strong supplemental benefits.

Each of these carriers has strengths and weaknesses that vary by zip code, provider network, and individual health needs. A plan that's excellent for your neighbor may not be the right fit for you if your doctors aren't in-network or your prescription drugs aren't on the plan's formulary.

The Three Things That Matter Most When Comparing Plans

When clients come to us overwhelmed by plan options, we tell them to focus on three things before anything else:

1. Your Doctors and Hospitals

Before you fall in love with a plan's premium or extra benefits, verify that your current primary care physician, any specialists you see regularly, and your preferred hospital are in the plan's network — and at what tier. A plan that doesn't include your cardiologist or your preferred cancer center isn't a good plan for you, regardless of how attractive the other benefits are.

2. Your Prescription Drugs

Every Medicare Advantage plan that includes Part D coverage has a formulary — a list of covered drugs organized by tier, with different cost-sharing at each tier. Before enrolling, run your specific medications through the plan's drug lookup tool to confirm they're covered and to understand what you'll pay. A plan with a $0 premium but a formulary that puts your maintenance medications on a high-cost tier can end up being far more expensive than a plan with a modest premium that covers your drugs favorably.

3. Your Out-of-Pocket Maximum

All Medicare Advantage plans cap your annual out-of-pocket costs, but the caps vary considerably — from as low as $2,000 on some plans to the federal maximum of $9,350 in-network. If you anticipate needing significant medical care, the out-of-pocket maximum is as important as the premium. A plan with a $0 premium and a $9,350 cap could cost you far more than a plan with a $50/month premium and a $3,500 cap if you have a major health event.

When Medicare Advantage May Not Be the Right Fit

Medicare Advantage is an excellent option for many people — but it's worth being honest about the situations where it may not serve you as well.

If you have complex, ongoing medical needs and rely on a team of specialists, the referral requirements and network restrictions of an HMO can create friction when you need care most. A Medigap plan paired with Original Medicare allows you to access any Medicare-accepting provider in the country without prior authorization.

If you travel extensively or split your time between states, HMO-based Medicare Advantage plans can leave you without in-network coverage for routine care when you're away from home. PPO plans offer more flexibility, but Original Medicare with a Medigap plan remains the gold standard for people who spend significant time in multiple locations.

If your doctors don't participate in any local Medicare Advantage networks, Original Medicare may simply be more practical.

None of these scenarios mean Medicare Advantage is wrong for you — but they're conversations worth having before you enroll, not after.

How Medicare Advantage Enrollment Works

You can enroll in, switch, or drop a Medicare Advantage plan during specific enrollment windows.

Initial Coverage Election Period (ICEP): When you first become eligible for Medicare, you can choose a Medicare Advantage plan during your Initial Enrollment Period — the 7-month window centered on your 65th birthday.

Annual Enrollment Period (AEP): October 15 through December 7 each year. This is the main window when anyone can switch Medicare Advantage plans, drop Medicare Advantage and return to Original Medicare, or add/change a Part D plan. Changes take effect January 1 of the following year.

Medicare Advantage Open Enrollment Period (OEP): January 1 through March 31 each year. If you are already enrolled in a Medicare Advantage plan, you can switch to a different Medicare Advantage plan or return to Original Medicare during this window. You cannot use this period to switch from Original Medicare to Medicare Advantage.

Special Enrollment Periods (SEPs): Triggered by qualifying life events such as moving out of your plan's service area, losing other coverage, or qualifying for a low-income subsidy.

One important note: if you leave Medicare Advantage and return to Original Medicare, you may want to add a Medigap policy to cover your cost-sharing exposure. In most states, Medigap insurers can use medical underwriting to approve or deny applications outside of guaranteed issue periods — meaning your health history could affect your ability to get coverage. California's Birthday Rule provides some protection here, but it's a nuance worth discussing before you make any changes.

Frequently Asked Questions

Q: Can I switch Medicare Advantage plans every year? Yes. During the Annual Enrollment Period (October 15 – December 7), you can switch to any Medicare Advantage plan available in your zip code, or return to Original Medicare. This is why reviewing your plan every fall is so important — plans change their premiums, formularies, and benefits annually.

Q: Do Medicare Advantage plans cover out-of-state emergencies? Yes. All Medicare Advantage plans are required to cover emergency and urgently needed care anywhere in the United States. The definition of "emergency" matters here — for routine care while traveling, whether you're covered depends on your plan type. PPO plans cover out-of-network care at a higher cost-share; HMO plans generally do not cover non-emergency out-of-area care.

Q: What happens if my doctor leaves my plan's network mid-year? Generally, if your provider leaves your plan's network, you may qualify for a Special Enrollment Period to switch plans. For ongoing treatment, plans are often required to allow a transition period — typically 90 days — so you can continue seeing that provider while finding an alternative. Contact your plan as soon as you learn of a network change.

Q: Are Medicare Advantage plans available everywhere in California? Plan availability varies by county and zip code. The Inland Empire and greater Los Angeles area have among the most competitive Medicare Advantage markets in the state, with many plans available at $0 additional premium. More rural areas of California may have fewer options. We can show you every plan available in your specific zip code.

Q: I'm on Medi-Cal. Can I also have Medicare Advantage? If you qualify for both Medicare and Medi-Cal, you're considered "dual eligible" and have access to Dual Eligible Special Needs Plans (D-SNPs), which are specifically designed to coordinate benefits between both programs. These plans can dramatically reduce your out-of-pocket costs. This is a situation where working with a broker who understands both programs is especially valuable.

Q: Is it true that Medicare Advantage plans can change their benefits every year? Yes — and this is one of the most important things to understand about Medicare Advantage. Every fall, carriers submit updated plan details to Medicare for the following year. Premiums, copays, formularies, and extra benefits can all change. This is why we strongly encourage every Medicare Advantage enrollee to review their Annual Notice of Change (ANOC) each fall and compare it against other available options before the December 7 deadline.

Compare Medicare Advantage Plans With a Local Expert

Comparing Medicare Advantage plans on your own is possible — but it's time-consuming, and the details that matter most (your specific doctors, your specific drugs, your specific health situation) require a personalized analysis that a generic website can't provide.

Peter Joseph has been helping Chino Hills and Inland Empire residents navigate Medicare Advantage since the agency was founded. He's a recognized Humana Top Broker in the Inland Empire, works with all major carriers in Southern California, and has been voted Best Insurance Broker in Chino Valley three years running. His job is to show you an honest side-by-side comparison of every plan available to you — not to steer you toward any particular carrier.

And because brokers are compensated by the carriers rather than by clients, this service costs you nothing.

Call (909) 217-2630 to speak with Peter directly, or book a free consultation online. We serve clients in Chino Hills, the Inland Empire, and across 30+ states — by phone, video, or in person.

Book a Free Medicare Advantage Consultation → Compare Medicare Advantage vs. Medigap → See If You're Eligible for Medicare → Attend a Free Medicare 101 Seminar →

By contacting the phone number on this website you will be directed to a licensed agent. Not affiliated with or endorsed by the Government or Federal Medicare Program.