Medicare Advantage vs Original Medicare: Medicare can be confusing when you first look at it. There are different parts, plans and costs. Two of the main choices are Original Medicare and Medicare Advantage.
Original Medicare is the traditional federal Medicare program. Medicare Advantage is offered by private insurance companies approved by Medicare. In 2026, CMS estimated that about 34 million people would be enrolled in Medicare Advantage. That was expected to be about 48% of all Medicare beneficiaries. CMS also estimated the average monthly Medicare Advantage plan premium at $14 in 2026, although the actual amount depends on the plan and location.
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What is Original Medicare?
Original Medicare includes Part A and Part B. Part A mainly helps pay for hospital care, skilled nursing facility care, hospice care and some home health care. Part B helps cover doctor visits, outpatient care, preventive services, medical equipment and many other medically necessary services.
In 2026 most people don’t pay a monthly premium for Part A because they or their spouse paid Medicare taxes for long enough while working. The Part A hospital deductible is $1,736 for each benefit period. Part B costs $202.90 per month for most people, although people with higher incomes can pay more. The Part B deductible is $283 in 2026.
After meeting the Part B deductible, a person with Original Medicare usually pays 20% of the Medicare-approved amount for covered Part B services. One important point is that Original Medicare doesn’t have a yearly limit on these out-of-pocket costs. Medicare.gov states, “There’s no yearly limit on what you pay out-of-pocket” under Original Medicare unless you have other coverage such as Medigap or Medicaid.
Original Medicare also gives people wide freedom when choosing doctors and hospitals. You can generally see any doctor or use any hospital in the U.S. that takes Medicare. In most cases, you also don’t need a referral to see a specialist.
But the original Medicare doesn’t pay for everything. Routine dental care, most eyeglasses and contact lenses, hearing aids and long-term custodial care aren’t generally covered.
People with Original Medicare can buy a Medigap policy from a private insurer to help with some deductibles, coinsurance and other costs. They can also buy a separate Part D plan for prescription drugs.
What is Medicare Advantage?
Medicare Advantage is also called Part C. Instead of getting Part A and Part B benefits directly through Original Medicare, you join a Medicare-approved private health plan.
Most Medicare Advantage plans combine Part A, Part B and usually Part D prescription drug coverage into one plan. Many plans also offer extra benefits that Original Medicare doesn’t normally cover. These can include dental, vision and hearing benefits.
You still need to have Part A and Part B to join Medicare Advantage. You also have to keep paying your Part B premium. Some Medicare Advantage plans have an additional monthly premium while some have a $0 plan premium.
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The big difference is how you get your care. Medicare Advantage plans can have provider networks. Depending on the plan, you may need to use doctors and hospitals in the network for non-emergency care. Going outside the network may cost more or may not be covered. Some plans also require referrals for certain specialists and prior authorization before certain services or supplies are covered.
Medicare Advantage plans do have an important protection that Original Medicare doesn’t have by itself. Each plan has a yearly out-of-pocket limit for covered Medicare services. Once you reach that limit, the plan pays 100% of covered services for the rest of that calendar year. The exact limit and cost-sharing amounts vary by plan.
Medicare Advantage vs Original Medicare
| Feature | Original Medicare | Medicare Advantage |
|---|---|---|
| Parts included | Part A + Part B | Part A + Part B, usually Part D |
| Provider choice | Any Medicare-accepting doctor or hospital | Usually limited to the plan’s network for non-emergency care |
| Specialist referral | Usually not needed | May be required |
| Prior authorization | Usually less common | May be required for some services |
| Part D coverage | Separate plan | Usually included |
| Monthly cost | Part B premium; Part A is $0 for most people | Part B premium + possible plan premium |
| Out-of-pocket limit | No yearly limit under Original Medicare alone | Yearly limit for covered Medicare services |
| Dental coverage | Generally not included | Many plans offer some dental benefits |
| Vision benefits | Limited | Many plans offer vision benefits |
| Hearing benefits | Hearing aids aren’t covered | Many plans offer hearing benefits |
| Medigap | Can be used with Original Medicare | Can’t be used with Medicare Advantage |
Prescription drug costs in 2026
Prescription drug coverage has also changed in recent years. For Part D coverage, including prescription drug coverage through Medicare Advantage plans, covered drug out-of-pocket spending is capped at $2,100 in 2026. After reaching that amount, the enrollee doesn’t have cost-sharing for covered Part D drugs for the rest of the year.
The $2,100 drug limit is separate from the medical out-of-pocket limit used by a Medicare Advantage plan. This is important because medical services and prescription drugs don’t all fall under one single spending limit.
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FAQs
1. What is the main difference between Medicare Advantage and Original Medicare?
Original Medicare is provided directly by the federal government, while Medicare Advantage plans are offered by private insurance companies approved by Medicare.
2. Is Medicare Advantage cheaper than Original Medicare?
Costs depend on the plan and your healthcare needs. Some Medicare Advantage plans have $0 monthly plan premiums, but you may still pay the Part B premium and other copays or coinsurance.
3. Can I switch between Original Medicare and Medicare Advantage?
Yes. Eligible Medicare beneficiaries can generally make changes during Medicare enrollment periods. The Medicare Open Enrollment Period runs from October 15 through December 7 each year, with changes generally taking effect January 1.
