Medicare in Oregon

Oregon has strong protections for Medigap enrollees; Nearly half of Medicare beneficiaries in Oregon have Medicare Advantage plans

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At a glance: Medicare health insurance in Oregon

Medicare enrollment in Oregon

As of July 2020, enrollment for Medicare in Oregon stood at 883,167 people, amounting to more than 20 percent of the state’s total population.

Most people gain eligibility for Medicare enrollment when they turn 65. But Medicare eligibility is also triggered when a person has been receiving disability benefits for 24 months, or has ALS or end-stage renal disease. Nationwide, 15 percent of all Medicare beneficiaries were under the age of 65 as of 2017; in Oregon, it was 13 percent.

Medigap in Oregon

Medigap plans are subject to various federal rules, but states also have a lot of say in how the plans operate. Oregon has a rule to ensure that Medigap enrollees aren’t stuck with their plan forever, regardless of their health status. And the state also guarantees access to Medigap plans for Medicare beneficiaries under age 65.

Medigap plans are standardized at the federal level, and federal law guarantees access to Medigap plans when people turn 65 and enroll in Medicare Part B (you have to also be enrolled in Medicare Part A in order to have Medigap, but the six-month open enrollment period for Medigap plans starts when you are at least 65 and enrolled in Part B).

But unlike Medicare Advantage and Part D, there’s no federal annual open enrollment period for Medigap plans; once that initial six-month window ends, it’s gone forever (except for the limited circumstances that trigger a guaranteed-issue right for Medigap). People who want to switch to a different Medigap plan are generally subject to medical underwriting, so healthy people can switch plans, but those with pre-existing medical conditions may not be able to do so. And people under age 65 (who are eligible for Medicare due to a disability or having end-stage renal disease or ALS) are not guaranteed access to Medigap under federal rules.

To address this, Oregon implemented a “birthday rule” in 2013 that allows Medigap enrollees an annual opportunity to switch to a plan with equal or lesser benefits during the 30 days following their birthday. The new plan is guaranteed issue during that window.

Oregon also allows Medicare beneficiaries under age 65 a six-month window (after enrolling in Medicare Part B) during which they have a guaranteed-issue right to a Medigap plan. Eligible enrollees can select a Medigap plan with no medical underwriting during a six-month window after they enroll in Medicare Part B, and the premium cannot exceed the premiums that are charged to enrollees who are 65.

As of 2020, there are 30 insurers that offer Medigap plans in Oregon.

There are three approaches to premiums that Medigap insurers can use: Attained-age rating, issue-age rating, and community rating. Oregon does not mandate one or the other, so most insurers in the state use attained-age rating. That means premiums increase as the enrollee gets older. There are a few Medigap insurers that use issue-age rating (premiums are based on the age the person was when they enrolled) and one — UnitedHealthcare/AARP — that uses community rating once a person is 75 years old (ie, a person age 75 will pay the same price as a person who is 85).

According to an AHIP analysis, 158,188 beneficiaries of Medicare in Oregon had Medigap coverage as of 2018.

Medicare Advantage in Oregon

Medicare Advantage plans allow beneficiaries to obtain their coverage via private plans instead of through Original — or traditional — Medicare (the federal government’s fee-for-service program). These plans are one option for consumers who desire additional benefits beyond what Original Medicare offers, but the plans are run by private insurers that have more limited provider networks than Original Medicare. And although Medicare Advantage plans do have caps on out-of-pocket costs (unlike Original Medicare on its own), the out-of-pocket exposure is generally more than a person would have if they purchased a Medigap plan and Part D plan to supplement Original Medicare. There are pros and cons with both options.

418,240 of Oregon’s Medicare beneficiaries had Medicare Advantage plans as of July 2020. That’s 47 percent of the state’s total Medicare population, as opposed to about 40 percent of Medicare beneficiaries nationwide who have opted for private Medicare coverage (not counting supplemental Medigap and Part D coverage that’s purchased in addition to Original Medicare).

There are Medicare Advantage plans available in all 36 counties in Oregon in 2020. But the number of plans for sale varies from as few as two to as many as 42, depending on the county.

Medicare Advantage enrollment is available during the annual election period each fall (October 15 to December 7). And people who are already enrolled in Medicare Advantage plans can also use the Medicare Advantage open enrollment period that runs from January through March. It allows them to switch to a different Medicare Advantage plan or switch to Original Medicare.

Oregon Medicare Part D

Original Medicare does not cover prescription drugs, so enrollees need supplemental coverage for drug costs. Many enrollees have supplemental coverage via an employer-sponsored plan or Medicaid, but Medicare Part D plans are available for those who need to obtain their own prescription coverage (prior to 2006, there were some Medigap plans that included prescription coverage; those are no longer for sale, but people who still have them are allowed to keep them).

Medicare Part D was created under the Medicare Modernization Act of 2003.  Medicare Part D coverage can be purchased on a stand-alone basis or integrated with a Medicare Advantage plan (nine out of ten Medicare Advantage plans include Part D prescription coverage in 2020).

As of mid-2020, there were 277,003 beneficiaries of Medicare in Oregon enrolled in stand-alone Medicare Part D plans. Another 395,937 beneficiaries had Medicare Part D coverage integrated with their Medicare Advantage plans. Nationwide, more people have Medicare Part D via stand-alone plans, but Medicare Advantage enrollment in Oregon is higher than average.

For 2020 coverage, Oregon has 28 plans with premiums ranging from $13 to $120 per month.

Medicare Part D enrollment is available during Medicare’s annual open enrollment period in the fall (October 15 to December 7). Plan selections made during this window are effective as of the following January.

Medicare spending in Oregon

In 2018, Medicare spent an average of $7,816 per Original Medicare beneficiary in Oregon (this analysis did not include costs for Medicare Advantage enrollees). The national average that year was $10,096 per enrollee, so costs are significantly lower in Oregon; Alaska, Hawaii, and Vermont are the only states where average per-beneficiary spending was lower (the cost analysis standardizes the data to eliminate geographic differences in payment rates).

Medicare in Oregon: Resources for Medicare beneficiaries and their caregivers

If you need help with your Medicare application in Oregon or have questions about Medicare eligibility in Oregon, you can contact Oregon’s Senior Health Insurance Benefits Assistance (SHIBA), which can provide help with a wide range of issues related to Medicare in Oregon.

SHIBA also maintains a page of FAQs about Medicare that include provisions specific to Oregon, such as the Medigap protections.

The Medicare Rights Center is also an excellent resource for Medicare-related questions.


Louise Norris is an individual health insurance broker who has been writing about health insurance and health reform since 2006. She has written dozens of opinions and educational pieces about the Affordable Care Act for healthinsurance.org. Her state health exchange updates are regularly cited by media who cover health reform and by other health insurance experts.

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