You keep hearing about Medicare Part A, Part B, Part D. Then someone drops "Part C" into the mix and you nod along, but you have no idea what it means. Here is the answer in one sentence. Part C is Medicare Advantage. Same thing, two names. Now let me tell you what it actually is and why it might, or might not, be right for you.
The short answer
Medicare Part C is the government's name for Medicare Advantage. It is a private plan that bundles your Part A (hospital) and Part B (medical) coverage into one product, usually with Part D drug coverage and extra benefits built in. About 5 out of 10 Medicare members are enrolled in a Part C plan.
You are still on Medicare. You are just letting a private insurance company (like Humana, UnitedHealthcare, Aetna, or Blue Cross) run it for you. The government pays them a set amount per month to cover you.
Why two names for the same thing?
Congress created the program in 1997 and called it "Medicare+Choice." In 2003, they renamed it "Medicare Advantage" because "advantage" sounded better to shoppers. But the underlying law still calls it Medicare Part C, which is why the letter still shows up in Medicare paperwork and on your Medicare card.
So if a form says "Part C" and an ad says "Medicare Advantage," they mean the same product. Do not let the two names throw you off.
The 4 parts of Medicare in one table
| Part | What It Covers | Who Runs It |
|---|---|---|
| Part A | Hospital care, skilled nursing, hospice, some home health | Federal government |
| Part B | Doctors, outpatient care, preventive services, some equipment | Federal government |
| Part C | Bundles A and B (and usually D) through a private plan | Private insurance companies, paid by government |
| Part D | Prescription drugs | Private insurance companies, paid by government |
Part A and Part B together are called Original Medicare. Part C is the private alternative. You pick one path or the other, not both.
What Medicare Part C plans cover
By federal law, every Part C plan must cover at least the same medical services as Original Medicare Part A and Part B. That is the baseline. Then most plans stack extras on top.
The required base
- All Part A services (hospital, skilled nursing, hospice, some home health)
- All Part B services (doctors, labs, outpatient surgery, DME, preventive care)
- Emergency care anywhere in the US, even out of network
Common extras that Original Medicare does not cover
- Prescription drugs (in most plans, called MAPD)
- Routine dental cleanings and some restorative care
- Vision exams and eyewear allowance
- Hearing exams and hearing aids
- Gym membership (SilverSneakers or equivalent)
- Over-the-counter (OTC) allowance for aspirin, band-aids, toothpaste
- Transportation to medical appointments
- Meal delivery after a hospital stay
- Fitness trackers and wellness programs
Not every plan has every extra. What is included varies plan by plan and county by county. See our list of overlooked Medicare Advantage benefits for more.
How much Part C costs
Part C costs come in a few layers. Here is what to expect in 2026.
Part B premium: $202.90 per month (for most)
Even if you are on a Part C plan, you still pay your Part B premium to Medicare. The private plan does not replace this cost. If your income is higher, you may pay an IRMAA surcharge on top. See what is IRMAA.
Plan premium: $0 to $150+
Many Part C plans have a $0 monthly premium. The insurance company gets paid enough by the government that they do not need to charge you extra. Some plans charge a small premium, especially PPOs and higher-benefit plans. You do not save money picking $0. You save money picking the plan with the best overall fit.
Copays and coinsurance
You pay small amounts as you use care. Typical:
- $0 to $30 for a primary care visit
- $25 to $65 for a specialist
- $250 to $400 per day for the first few days of a hospital stay
- $0 to $50 for common generic drugs
Out-of-pocket maximum (MOOP)
Every Part C plan has a yearly cap on what you can pay for covered services. Once you hit it, the plan pays 100% for the rest of the year. In 2026, plans can set their in-network MOOP up to $9,350 (check current CMS rates). Most plans set theirs lower, around $4,000 to $6,000. This cap is one of the biggest reasons people pick Part C over Original Medicare. See how MOOP actually works.
The main plan types under Part C
HMO (Health Maintenance Organization)
Uses a local network. You pick a primary care doctor. You need referrals to see specialists. Out-of-network care usually not covered except in emergencies. Lowest premiums, most restrictions.
PPO (Preferred Provider Organization)
Uses a network too, but you can also see out-of-network providers for a higher cost. No referrals needed for specialists in most cases. More flexibility, usually higher premiums.
PFFS (Private Fee-For-Service)
Rarer. Any provider that accepts the plan's terms can treat you. Providers can choose case by case, so access is unpredictable.
SNP (Special Needs Plan)
For people with specific conditions (like diabetes or heart failure), those in nursing homes, or those on both Medicare and Medicaid (dual eligibles). Tailored benefits for that group.
MSA (Medicare Medical Savings Account)
Very rare. Combines a high-deductible plan with a savings account. Not offered in most areas.
For a deeper dive, see Medicare HMO vs PPO.
Part C vs Original Medicare + Medigap
The big Medicare decision usually comes down to Part C or Original Medicare with a Medigap supplement. Here is the quick side by side.
| Feature | Part C (Medicare Advantage) | Original Medicare + Medigap |
|---|---|---|
| Monthly cost | Often $0 + Part B | Part B + Medigap premium ($100 to $300) |
| Copays | Yes, as you use care | Usually none (with Plan G or F) |
| Network | Yes (HMO/PPO) | Any provider that takes Medicare |
| Referrals | Sometimes required | Never required |
| Out-of-pocket max | Yes (built in) | Only through Medigap |
| Prior authorization | Common | Rare |
| Extras (dental, vision, gym) | Usually included | Not included |
| Drugs | Usually built in | Add a separate Part D plan |
See our full comparison at Medicare Advantage vs Medigap.
Who tends to like Part C
- People who want low monthly premiums and can handle copays as they use care
- People who value extras like dental, vision, hearing, and gym benefits
- People who stay in one geographic area and are okay with a network
- People who want everything (medical, drugs, dental) in one plan and one card
- People who qualify for a Special Needs Plan or chronic condition plan
- Snowbirds who pick PPO plans with nationwide reach
Who tends to prefer Original Medicare + Medigap
- People who travel often across the US or want no network hassle
- People who see many specialists and do not want referrals or prior auth
- People with complex health needs who want maximum provider choice
- People willing to pay a monthly Medigap premium for predictable copays
How to enroll in Part C
You can enroll in a Part C plan during one of these windows:
- Initial Enrollment Period. The 7 month window around your 65th birthday.
- Annual Enrollment Period. October 15 to December 7 each year.
- Medicare Advantage Open Enrollment Period. January 1 to March 31 (only if you are already in an Advantage plan and want to switch).
- Special Enrollment Period. Life events like moving, losing employer coverage, or your plan leaving your area.
You have to be enrolled in Part A AND Part B, and live in the plan's service area. You cannot have End-Stage Renal Disease in most cases (a few exceptions apply since 2021 law changes).
Common misconceptions about Part C
"Part C is separate from Medicare"
No. Part C IS Medicare. You are just receiving your benefits through a private company that Medicare pays.
"$0 premium plans are free"
No. You still pay Part B, and you still owe copays and coinsurance as you use services.
"I lose Medicare if I join Part C"
No. You keep Medicare. Your Advantage plan just becomes how you use it. You can switch back to Original Medicare during allowed windows.
"Part C covers everything Medicare does not"
Extras vary by plan. Some are generous, some are minimal. Read the Summary of Benefits before enrolling.
The bottom line
Medicare Part C and Medicare Advantage are two names for the same product. It is a private plan that bundles your Medicare benefits, usually with drugs and extras. About half of Medicare members choose it because of low premiums, extra benefits, and a built-in out-of-pocket cap.
Whether it fits you depends on your doctors, your drugs, your budget, and how much freedom you want. There is no universal best choice.
Want help comparing Part C plans in your area? Book a free 20 minute call. I am licensed with most major carriers and I can lay them out side by side. Or read the official Medicare.gov Parts of Medicare page, then check our list of top 10 Medicare Advantage mistakes before you pick.
Frequently asked questions
What is Medicare Part C?
Part C is Medicare Advantage. A private plan that bundles Parts A and B, usually with Part D and extras like dental and vision.
Is Medicare Advantage the same as Medicare Part C?
Yes. Two names, same product. Congress uses Part C, marketers use Medicare Advantage.
How much does Medicare Part C cost?
You still pay your Part B premium ($202.90 in 2026). Many Part C plans have a $0 additional premium. Plus copays as you use care.
Do I need Part D drug coverage if I have Part C?
Most Part C plans include drugs (MAPD). If yours does not, add a stand-alone Part D. Do not double up.
Can I switch from Medicare Part C back to Original Medicare?
Yes, during AEP or MOEP. Buying Medigap after may need underwriting unless you have a trial right or live in a guaranteed-issue state.