Your Medicare Advantage Plan Changed in 2026. Here's What Washington Residents Need to Know.
She had been on the same Medicare Advantage plan for four years. Same doctors. Same network. Same premium. Then January arrived and so did a letter she almost didn't open.
Her plan no longer existed.
She wasn't alone. A February 2026 JAMA study found that roughly 1 in 10 Medicare Advantage enrollees, about 2.9 million people, were forced to switch plans this year. UnitedHealthcare exited 225 counties nationally. Humana exited 198. Aetna closed nearly 90 plans across 34 states. Hospital systems including Mayo Clinic and Mount Sinai terminated their Medicare Advantage contracts, deciding the math no longer worked.
Washington counties are among those seeing plan exits and merges in 2026.
What most people in this situation don't know is that a plan cancellation triggers something important. And there's a window to use it.
What Actually Happened, and Why
Medicare Advantage plans are run by private insurance companies that receive fixed payments from the federal government per enrollee. When those payments don't keep pace with rising healthcare costs, as they didn't in 2026, carriers make a business decision to exit markets.
Researchers called it an unprecedented spike in forced disenrollment. In practice it meant millions of people got letters in January telling them their plan no longer existed.
UnitedHealthcare cited a 20% drop in government funding compared to 2023 as a key factor in their exits. Aetna, Humana, and others pointed to rising medical costs and reduced reimbursement rates.
People who chose Medicare Advantage specifically for its low premiums and simplified coverage found themselves suddenly without their plan, without their doctors in some cases, and without a clear path forward.
The disruption is real. What matters now is what you do next.
The Option Most People Miss
When a Medicare Advantage plan is cancelled, federal law gives you a guaranteed issue right. This means Medigap insurance companies must sell you a Medicare Supplement policy. They cannot deny you based on your health history. They cannot charge you more because of pre-existing conditions.
This right exists specifically because of the plan cancellation. It is a time-limited window. If you miss it, the protection expires and carriers can once again ask health questions and potentially deny coverage based on your medical history.
For people who have been on Medicare Advantage and now want the predictability of Original Medicare with a Supplement plan, this window is the path to get there without medical underwriting. No networks. No prior authorization. Access to any doctor in the country who accepts Medicare.
The Washington Detail That Matters
Washington state has some of the strongest Medicare Supplement consumer protections in the country. Washington's Right to Change law allows people already enrolled in a Supplement plan to switch carriers at any time, without medical questions.
This protection does not apply to people transitioning from Medicare Advantage to a Supplement plan for the first time.
If your Medicare Advantage plan was cancelled or significantly changed, the right you have is a federal guaranteed issue right triggered by that specific event. Not Washington's broader switching law. These are different protections. The federal triggered right has a deadline. Washington's year-round switching law does not help you get into a Supplement plan for the first time.
Knowing which one applies to you is the difference between having options and not having them.
What This Means If Your Plan Changed
If your Medicare Advantage plan was cancelled effective January 1, 2026, and you have not yet made a decision about your coverage, the timeline is pressing.
The guaranteed issue window typically runs 63 days from when coverage ends. For January cancellations that window may have already closed for most people. For plan changes including networks that shrank, doctors who left, or benefits that were reduced, the timing and eligibility for guaranteed issue rights depends on the specific nature of the change.
Not every plan change triggers a guaranteed issue right. A plan that still exists but changed its network is different from a plan that was cancelled entirely.
What I cannot tell you in a blog post is whether your specific situation qualifies for a guaranteed issue right, whether that window is still open, and which Supplement plan makes sense for your health needs and budget. That requires a real conversation about what happened to your specific plan and what your options are right now.
What I can tell you is that the people who call sooner rather than later have more options than the people who wait.
Michael Gurr is a licensed Medicare and retirement advisor serving Pierce County and Washington State.
Frequently Asked Questions
My Medicare Advantage plan was cancelled for 2026. Can I get a Medicare Supplement plan now?
Does Washington's guaranteed switching law help me switch from Medicare Advantage to a Supplement plan?
My Medicare Advantage plan wasn't cancelled but my doctor left the network. Do I have options?
Why are so many Medicare Advantage plans exiting in 2026?
Is Original Medicare with a Supplement plan better than Medicare Advantage?
Have questions about your specific situation?
Join Michael's free Facebook group, "Turning 65 in Washington State," where Washington residents get clear Medicare answers without the sales pitch.
Join the group →Not sure if your window is still open?
As a licensed Medicare advisor in Washington State, I'll review what happened to your plan and tell you whether you still have guaranteed issue rights, and what your best options are right now.
There's no charge to talk and no obligation to decide. If it's not the right fit, I'll tell you that too.
This article is for educational purposes. For official Medicare information, visit medicare.gov.