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Original Medicare vs. Medicare Advantage

Understanding your Medicare choices

By Karen Lewis-Smith
Regional Director, Government Programs, Kaiser Foundation Health Plan of Washington

If you're nearing age 65 or have already reached that milestone, you've undoubtedly heard about Original Medicare and Medicare Advantage. Even if you choose Medicare Advantage, remember you'll need to first enroll in Original Medicare (Medicare Parts A and B).

To decide which option is best for you, you'll need to consider your health care needs, budget, and personal preferences. Read on for a summary of facts that will help you weigh the pros and cons of each coverage approach.

What it is

Original Medicare: Federal government's traditional no-frills fee-for-service plan.

Medicare Advantage: Also known as Medicare Part C or MA plans, these are offered by private insurance companies and approved and partially funded by the federal government.

Who's eligible

Original Medicare: American citizens and permanent residents who are 65 years of age or older or who have collected disability benefits for 2 or more years.

Medicare Advantage: Most people who are enrolled in both Medicare Parts A and B. You must live in the service area for the plan in which you enroll.

What it covers

Original Medicare: Includes Medicare Part A (inpatient hospital coverage) and Part B (outpatient medical services).

Medicare Advantage: The same inpatient and outpatient services as Original Medicare. In addition, plans often include Medicare Part D (also known as Medicare Advantage prescription drug plans); vision, hearing, and dental benefits; and health and wellness services.

What it costs

Original Medicare: For most people, there's no premium for Part A.1 You pay a Part B monthly premium, plus deductibles, copayments, and coinsurance (usually 20% of the Medicare-approved cost of the services covered by Part B).

Medicare Advantage: You pay a Part B monthly premium, and your plan's premium, if it charges one. You'll also pay the plan's deductible, if applicable, and copays (a fixed dollar amount) or coinsurance (a percentage of the cost) for each office visit.

Out-of-pocket spending limits

Original Medicare: There is no limit on what you spend on health care. If you have a serious accident or illness, you'll continue to be responsible for a portion of the costs, no matter how expensive it gets.

Medicare Advantage
Out-of-pocket limits apply in some cases:

  • Plans must have an annual out-of-pocket limit, which protects you if you need expensive care. Once you reach that limit, the plan pays for all covered medical expenses for the rest of the calendar year.
  • The limit does not apply to Part D (prescription drug) benefits and other non-CMS-covered expenses such as vision and hearing hardware and optional dental coverage.


Original Medicare
What you need to know about providers for Original Medicare:

  • You may see any doctor in the United States who accepts Medicare. If you go to a doctor who doesn’t accept Medicare, you could pay more for services.
  • No referrals are needed to see specialists.

Medicare Advantage
What you need to know about providers for Medicare Advantage:

  • Most plans require you to visit doctors, hospitals, and other health care providers within the plan’s provider network. (It's one way they keep premiums reasonable.) If you get nonurgent or non-emergent care outside the network, you may be responsible for paying the entire bill.
  • Referrals may be needed to see specialists.

Other considerations

Original Medicare:
Here's what to consider when you're looking at Original Medicare:

  • Original Medicare doesn't include prescription drug coverage, so you may want to buy a separate standalone Part D (prescription drug) plan if you take a lot of medications. When choosing a Part D plan, find out if the medications you take are available on the plan formulary and how much they cost.
  • You may want Medicare supplemental insurance (Medigap) to help pay out-of-pocket costs that Original Medicare doesn't cover.
  • You'll need to coordinate with multiple insurers, in addition to the federal government.
  • A 3-day hospital admission is required to qualify for skilled nursing facility coverage.

Medicare Advantage:
Here's what to consider when you're looking at Medicare Advantage:

  • Plans can combine health and drug coverage in one plan which usually includes additional benefits — vision, hearing, and dental benefits, and health and wellness services.
  • For questions and claims, you deal with just one company.
  • You'll want to find out if the medications you take are available on the plan formulary and how much they cost.
  • You can't add Medicare supplemental insurance (Medigap) to an MA plan.
  • Most plans have dropped Medicare's requirement of a 3-day hospital admission to receive skilled nursing facility coverage.

For more information about how Medicare works, visit medicare.gov or call Social Security at 1-800-772-1213. Or check out our latest videos about Medicare coverage, costs, and enrollment periods.

Learn about Medicare plans for group, state, and federal employees

If you are becoming eligible for Medicare and your employer offers a group retiree Medicare Advantage health plan through Kaiser Permanente Washington, call us at 1-800-581-8252 or TTY 711 from 8 a.m. to 5 p.m., Monday through Friday.

FEHB and PEBB members can also find information online:

Enroll in a Kaiser Permanente Medicare health plan now2

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Questions? Call us:

Prospective members
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Medicare Star Quality Ratings

Our Medicare Advantage health plan was rated 4.5 out of 5 Stars in Washington for 2021. The Medicare Star Rating is based on quality, service, and member satisfaction. Our high rating means you can have peace of mind knowing that you're getting high-quality care and coverage — all in a single plan at a great value.3

NCQA Quality Rating

Kaiser Permanente Washington Medicare Advantage (HMO) plan was rated 4.5 out of 5 in the National Committee for Quality Assurance (NCQA) Medicare Health Insurance Plan Ratings 2019-2020.4