Medicare Part C, better known as Medicare Advantage, is a way to get your Medicare benefits through a private insurance company instead of directly through the federal government. These plans must cover everything Original Medicare covers, and most bundle in prescription drug coverage plus extras like dental, vision, and hearing that Original Medicare doesn’t offer.
If you’ve started researching Medicare, you’ve probably run into four confusing letters: A, B, C, and D. Parts A and B make up what’s called Original Medicare. Part D is prescription drug coverage. Part C sits a little differently, because it’s not really a separate benefit at all. It’s an entirely different way of receiving the benefits you already have.
Medicare Part C, or Medicare Advantage, is the plan type Lannum Insurance Services helps clients in the Tulsa area with more than any other. In 2026, more than 33 million Americans are enrolled in a Medicare Advantage plan, making it the most common way people actually receive their Medicare benefits today. Here’s what it is, how it works, and how to figure out if it fits your doctors and your budget.
What Is Medicare Part C?
Medicare Part C is Medicare Advantage, a type of Medicare coverage offered by private insurance companies that are approved by and under contract with the federal government. Instead of billing Medicare directly, these companies receive a fixed monthly payment from Medicare to manage your care.
When you enroll in Medicare Part C, you don’t lose your Medicare. You’re still on Medicare, but Part A (hospital coverage) and Part B (medical coverage) get delivered to you through a private plan rather than directly through the government.
What Does Medicare Part C Cover?
By law, every Medicare Advantage plan must cover everything Original Medicare covers, with the exception of hospice care, which Original Medicare still handles directly, and clinical trial participation. Beyond that baseline, most Part C plans add benefits Original Medicare simply doesn’t include, such as:
- Prescription drug coverage, often called an MAPD plan when it’s bundled in
- Routine dental care, including cleanings and sometimes more extensive work
- Vision benefits, like eye exams and an allowance toward glasses or contacts
- Hearing benefits, including hearing aid allowances
- Extras like fitness memberships or over-the-counter allowances, depending on the plan
How Much Does Medicare Part C Cost in 2026?
The estimated average Medicare Advantage premium for 2026 is around $14 to $34 a month, depending on the source and how the average is calculated, and roughly three-quarters of enrollees pay no premium at all beyond their standard Part B premium. That said, “average” hides a wide range. Some plans charge $0, and others run $200 a month or more depending on the coverage and extras included.
Even with a $0 premium plan, you still have to pay your Part B premium, which is $202.90 a month in 2026. Part C plans also come with a built-in safety net: an annual out-of-pocket maximum, set at $9,250 for 2026, though many individual plans set their limit lower. Once you hit that number, the plan covers 100% of your covered costs for the rest of the year.
A Trade-Off Worth Understanding
A low or $0 premium doesn’t automatically mean a plan is the cheapest option for you. Plans with lower premiums often come with higher copays for specialist visits, hospital stays, or certain procedures. The right way to compare cost isn’t the premium alone, it’s the premium plus what you’d actually pay if you needed care during the year.
What Are the Different Types of Medicare Advantage Plans?
Medicare Advantage plans come in several structures, and the differences mostly come down to how much flexibility you have in choosing providers.
HMO Plans
Health Maintenance Organization plans generally require you to use doctors and hospitals within the plan’s network and often require a referral to see a specialist. HMOs tend to have lower premiums and lower out-of-pocket costs in exchange for that more limited network.
PPO Plans
Preferred Provider Organization plans let you see providers outside the network, usually at a higher cost, and typically don’t require referrals to see a specialist. PPOs generally cost more than HMOs but offer more flexibility if you split time between locations or prefer to keep a wider choice of doctors.
SNPs and Other Specialized Plans
Special Needs Plans, or SNPs, are built for people with specific circumstances, including Dual Eligible SNPs for people who qualify for both Medicare and Medicaid, Chronic Condition SNPs for people managing an ongoing illness, and Institutional SNPs for people living in a care facility. There are also Private Fee-for-Service (PFFS) plans and Medical Savings Account (MSA) plans, though these are far less common.
When Can You Enroll in a Medicare Part C Plan?
You can first enroll in Medicare Advantage during your Initial Enrollment Period, which starts three months before the month you turn 65 and ends three months after. If you’re already on Original Medicare and want to switch, the Annual Enrollment Period runs October 15 through December 7 each year.
If you’re already enrolled in a Medicare Advantage plan and want to make a change, the Medicare Advantage Open Enrollment Period runs January 1 through March 31, letting you switch to a different Part C plan or move back to Original Medicare.
A Real Scenario Worth Considering
Say you’re turning 65 in Tulsa this fall and you split your time between here and visiting family in another state part of the year. An HMO plan with a tight local network might create real headaches if you need care while you’re away, while a PPO could give you the flexibility that situation calls for, even at a slightly higher monthly cost.
How Do You Know If Medicare Advantage Is Right for You?
The honest answer depends entirely on your specific doctors, prescriptions, and how often you expect to need care. A plan that’s a great fit for your neighbor could leave you paying more or losing access to a specialist you rely on.
Before enrolling in or switching to a Medicare Advantage plan, it’s worth checking that your current doctors and pharmacies are in-network, confirming your prescriptions are on the plan’s formulary, and comparing the total expected cost, not just the premium, against Original Medicare paired with a Medigap policy. This is exactly the kind of comparison I help clients in the Tulsa area work through every week. If you’d like help sorting through your specific situation, you can schedule a free consultation and we’ll review whether an Advantage plan fits your doctors and prescriptions.
Frequently Asked Questions
What is Medicare Part C?
Medicare Part C, also called Medicare Advantage, is a way to receive your Medicare benefits through a private insurance company instead of directly through the federal government. These plans must cover everything Original Medicare covers.
What does Medicare Part C cover?
Medicare Part C covers everything Original Medicare Parts A and B cover, except hospice care and clinical trials, which Original Medicare still handles. Most plans also add prescription drug, dental, vision, and hearing coverage.
Is Medicare Part C the same as Medicare Advantage?
Yes. Medicare Part C and Medicare Advantage are two names for the exact same program. You’ll see both terms used interchangeably by Medicare.gov, insurance companies, and advisors.
How much does Medicare Part C cost in 2026?
The estimated average premium is around $14 to $34 a month in 2026, though many plans charge $0. You’ll still pay your standard Part B premium of $202.90 a month, plus any copays or coinsurance based on the plan you choose.
What’s the difference between an HMO and a PPO Medicare Advantage plan?
HMO plans generally require you to stay within a network and get referrals for specialists, usually at a lower cost. PPO plans let you see out-of-network providers at a higher cost, without needing referrals.
The Bottom Line
Medicare Part C comes down to one core idea: it’s not extra coverage stacked on top of Medicare, it’s a different way of receiving the Medicare benefits you already have, delivered through a private company instead of the government directly. Whether that trade-off makes sense for you depends on your doctors, your prescriptions, and how you weigh network flexibility against cost.
If you’re comparing Medicare Advantage against Original Medicare or a Medigap policy, call 918-815-6382 or schedule a free consultation and we’ll review whether an Advantage plan fits your doctors and prescriptions. You can also browse our Medicare plan options or read our Medicare frequently asked questions for more detail.