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What You Will Learn — Best Medicare Plans in Washington State 2026

• Why Washington State has unique Medicare advantages in 2026
• The best Medicare Advantage plans in Washington State 2026
• Kaiser Permanente Medicare Advantage in Washington State
• The best Medicare Supplement plans in Washington State 2026
• Washington State Medicare costs in 2026
• Seattle vs Eastern Washington Medicare differences
• Free Medicare help in Washington State — SHIBA program
• Frequently asked questions about the best Medicare plans in Washington State 2026

Why Washington State Has Unique Medicare Advantages in 2026

Washington State offers some of the most unique Medicare advantages in the country in 2026.

Washington State has over 1.4 million Medicare beneficiaries and a rapidly growing senior population particularly in the Seattle and Puget Sound region. The Seattle metropolitan area has become one of the most competitive Medicare Advantage markets in the Pacific Northwest — attracting every major insurer and creating excellent plan options for Western Washington seniors.

Washington State has a unique Medicare history — Group Health Cooperative of Puget Sound was one of the first and most successful HMO-style healthcare organizations in the United States and is now part of Kaiser Permanente. Kaiser Permanente has an exceptionally strong presence in Western Washington and consistently earns some of the highest Medicare star ratings in the state.

Washington State has strong major healthcare systems including Kaiser Permanente, Providence Health, UW Medicine, Virginia Mason Franciscan Health, and MultiCare Health System — all of which participate in Medicare networks.

Washington State has unique Medigap consumer protections — including a birthday rule similar to California and Oregon that allows seniors to switch Medigap plans with equal or lesser benefits during the 30 days following their birthday without medical underwriting.

Washington State’s SHIBA program — Statewide Health Insurance Benefits Advisors — is one of the most highly regarded free Medicare counseling programs in the country.

Best Medicare Advantage Plans in Washington State 2026

Washington State has excellent Medicare Advantage competition particularly in the Seattle and Puget Sound region. Here are the best Medicare Advantage plans in Washington State in 2026:

Kaiser Permanente Medicare Advantage Washington State 2026

Kaiser Permanente is the premier Medicare Advantage provider in Western Washington State and consistently offers some of the best Medicare plans in Washington. Kaiser Permanente Medicare Advantage plans in Washington State in 2026 typically offer:

• Consistently high Medicare star ratings — 4.5 to 5 stars in Washington State
• $0 to low monthly premium plans throughout Western Washington
• Fully integrated care system — doctor pharmacy and hospital in one system
• Comprehensive dental, vision, and hearing benefits
• Prescription drug coverage included
• Strong telehealth services
• Mental health coverage integrated into care
• Preventive care coordination

Kaiser Permanente Medicare Advantage is the best Medicare Advantage plan in Washington State for seniors who live in Kaiser service areas — primarily Western Washington including Seattle, Tacoma, Everett, Olympia, and surrounding communities — and are willing to receive all their care within the Kaiser system.

UnitedHealthcare AARP Medicare Advantage Washington State 2026

UnitedHealthcare offers competitive Medicare Advantage plans throughout Washington State in 2026:

• $0 monthly premium plans in major Washington markets
• Renew Active fitness benefit included
• Comprehensive dental up to $3,000 annual maximum
• Vision and hearing coverage included
• Strong networks in Seattle, Tacoma, and Spokane
• 4 to 4.5 star Medicare ratings
• Prescription drug coverage included
• Good statewide coverage including Eastern Washington

Humana Medicare Advantage Washington State 2026

Humana offers competitive Medicare Advantage plans in Washington State markets in 2026:

• $0 monthly premium plans in covered Washington markets
• SilverSneakers fitness membership
• Dental, vision, and hearing benefits
• Prescription drug coverage included
• Good networks in major Washington State markets

Aetna Medicare Advantage Washington State 2026

Aetna offers Medicare Advantage plans in Washington State in 2026:

• $0 monthly premium plans in covered Washington markets
• CVS pharmacy preferred network
• MinuteClinic access at low or $0 copay
• SilverSneakers fitness benefit
• Dental, vision, and hearing benefits included

Regence BlueShield Medicare Advantage Washington State 2026

Regence BlueShield is a strong regional Medicare Advantage provider in Washington State in 2026:

• Washington State-based Blue Cross Blue Shield affiliate
• Strong provider networks throughout Washington State
• $0 to low premium plans
• Dental, vision, and hearing benefits included
• Good relationships with Washington State health systems
• Strong brand recognition among Washington seniors

Regence BlueShield is an excellent Medicare Advantage choice for Washington State seniors who want a locally-based insurer with deep Washington State healthcare relationships.

Premera Blue Cross Medicare Advantage Washington State 2026

Premera Blue Cross is another strong Washington State-based Medicare Advantage provider in 2026:

• Washington State-based insurer with deep local roots
• Strong networks throughout Washington State
• $0 to low premium plans
• Dental, vision, and hearing benefits included
• Good relationships with Providence, MultiCare, and other Washington health systems

Washington State’s Unique Medigap Birthday Rule

Washington State has a unique Medigap consumer protection — the birthday rule — that is similar to California’s and provides significant advantages for Washington seniors who have Medigap coverage.

Under Washington State’s birthday rule Medicare beneficiaries have a 30-day window each year — starting on their birthday — during which they can switch to a Medigap plan with equal or lesser benefits from any insurance company without medical underwriting.

This means Washington State seniors can shop for lower Medigap premiums every year on their birthday and switch to a better-priced plan without being denied or charged more due to health conditions. This annual shopping opportunity can save Washington seniors significant money over time.

Washington State also requires Medigap companies to offer coverage to Medicare beneficiaries under 65 with disabilities — providing important protections that many other states do not offer.

Best Medicare Supplement Plans in Washington State 2026

For Washington State seniors who prefer Original Medicare with a Medigap supplement Washington offers strong options in 2026.

Best Medicare Supplement Plan in Washington State — Plan G

Medigap Plan G is the best Medicare Supplement plan for most Washington State seniors in 2026. After paying the $257 annual Part B deductible Plan G covers 100% of all Medicare-approved costs.

Average Medigap Plan G costs in Washington State in 2026:

• Age 65 — $130 to $220 per month
• Age 70 — $155 to $255 per month
• Age 75 — $185 to $295 per month

Washington State Medigap Plan G premiums are slightly above the national average due to the state’s higher healthcare costs — but the birthday rule shopping protection helps seniors find competitive rates annually.

Top Medicare Supplement Plan G providers in Washington State in 2026:

• AARP UnitedHealthcare — largest Medigap provider with strong Washington presence
• Regence BlueShield — trusted Washington State brand
• Premera Blue Cross — strong Washington State presence
• Mutual of Omaha — consistently competitive pricing
• Aetna — competitive in Washington State markets

Medigap Plan N in Washington State 2026

Medigap Plan N offers lower premiums than Plan G in Washington State with up to $20 doctor visit copays.

Average Medigap Plan N costs in Washington State in 2026:

• Age 65 — $100 to $175 per month
• Age 70 — $120 to $205 per month

Seattle vs Eastern Washington Medicare 2026

Washington State’s Medicare market varies dramatically between Western Washington and Eastern Washington.

Seattle and Western Washington Medicare 2026

Seattle and Western Washington — including the entire Puget Sound region from Bellingham to Olympia — has one of the most competitive Medicare Advantage markets in the Pacific Northwest. Kaiser Permanente dominates Western Washington with its highly rated integrated care system. Regence, Premera, UnitedHealthcare, and Humana also offer strong plans throughout Western Washington.

Western Washington seniors benefit from access to world-class healthcare systems including UW Medicine, Virginia Mason Franciscan Health, Providence Health, MultiCare, and of course Kaiser Permanente — all competing for Medicare Advantage plan inclusion.

Eastern Washington Medicare 2026

Eastern Washington — including Spokane, the Tri-Cities, Yakima, and Wenatchee — has fewer Medicare Advantage options than Western Washington. Kaiser Permanente does not serve Eastern Washington. The primary healthcare systems in Eastern Washington include Providence Health, MultiCare, and Confluence Health.

UnitedHealthcare has the strongest Medicare Advantage network in Eastern Washington among national plans. Regence and Premera also offer coverage in Eastern Washington.

For rural Eastern Washington seniors Original Medicare with Medigap Plan G is often the better choice because:

• Medicare Advantage networks are more limited in rural Eastern Washington
• Original Medicare provides access to any Washington State Medicare-accepting provider
• Washington State’s birthday rule means annual Medigap premium shopping is available
• Medigap Plan G works throughout Washington State and nationwide

Washington State Medicare Costs in 2026

Medicare Part A Costs in Washington State 2026

• Monthly premium — $0 for most Washington seniors
• Hospital deductible — $1,676 per benefit period

Medicare Part B Costs in Washington State 2026

• Standard monthly premium — $185.00 per month
• Annual deductible — $257

Medicare Advantage Costs in Washington State 2026

• Kaiser Permanente — $0 to $40 per month additional
• Other plans — $0 to $60 per month additional
• Out-of-pocket maximum — $3,400 to $9,350 depending on plan

Medicare Supplement Plan G Costs in Washington State 2026

• Monthly premium — $130 to $220 at age 65
• Slightly above national average but birthday rule enables annual shopping

Medicare Part D Costs in Washington State 2026

• Average monthly premium — $35 to $65
• Annual out-of-pocket maximum — $2,000

Washington SHIBA — Free Medicare Help

Washington State seniors can get free unbiased Medicare counseling through SHIBA — Statewide Health Insurance Benefits Advisors. SHIBA is Washington State’s SHIP program and one of the most highly regarded free Medicare counseling programs in the country.

Contact SHIBA Washington State:

• Call SHIBA — 1-800-562-6900
• Website — insurance.wa.gov/shiba
• Find a local SHIBA counselor in your Washington county

Frequently Asked Questions — Best Medicare Plans in Washington State 2026

What are the best Medicare Advantage plans in Washington State in 2026?

The best Medicare Advantage plans in Washington State in 2026 include Kaiser Permanente for Western Washington seniors — consistently earning 4.5 to 5 star Medicare ratings — along with Regence BlueShield, Premera Blue Cross, UnitedHealthcare, and Humana statewide. Kaiser Permanente is the top choice for Western Washington seniors who receive care within the Kaiser system. For Eastern Washington UnitedHealthcare and Regence offer the strongest options.

Does Washington State have a Medigap birthday rule?

Yes — Washington State has a birthday rule similar to California’s. Washington seniors can switch to a Medigap plan with equal or lesser benefits during the 30 days following their birthday each year without medical underwriting. This annual shopping protection helps Washington seniors find better Medigap premiums every year.

How much does Medicare cost in Washington State in 2026?

Most Washington State seniors pay $185.00 per month for Medicare Part B. Kaiser Permanente Medicare Advantage plans often charge $0 to $40 per month additional. Washington State Medigap Plan G premiums range from $130 to $220 at age 65 — slightly above the national average but the birthday rule enables annual premium shopping.

Is Kaiser Permanente Medicare good in Washington State?

Yes — Kaiser Permanente Medicare Advantage is excellent in Western Washington State. Kaiser consistently earns 4.5 to 5 star Medicare ratings in Washington and its fully integrated care system provides seamless coordination between all providers. Kaiser is the top Medicare Advantage choice for Western Washington seniors who are within the Kaiser service area and comfortable receiving care within the Kaiser system.

What is SHIBA in Washington State?

SHIBA — Statewide Health Insurance Benefits Advisors — is Washington State’s free Medicare counseling program. SHIBA is one of the most highly regarded SHIP programs in the country. Call SHIBA at 1-800-562-6900 for free help comparing Medicare plans in Washington State.

Summary — Best Medicare Plans in Washington State 2026

Washington State seniors in 2026 benefit from excellent Medicare plan options — particularly in Western Washington where Kaiser Permanente’s highly rated integrated care system competes with strong plans from Regence, Premera, UnitedHealthcare, and Humana. Washington State’s unique birthday rule Medigap protection gives seniors annual opportunities to shop for better Medigap premiums without health questions.

Use the free plan finder at Medicare.gov to compare all Medicare plans in your Washington State zip code. For free personalized help contact Washington SHIBA at 1-800-562-6900 or call Medicare free at 1-800-633-4227.

This guide is for informational purposes only and is not medical or financial advice. Always verify current Medicare plan details at Medicare.gov before making enrollment decisions.

Sources: Medicare.gov | CMS.gov | Washington SHIBA | AARP.org

Last updated: April 2026 | Author: James Carter, Independent Medicare Research Analyst