Washington Medicare beneficiaries have access to a range of coverage options, state-specific protections, and free counseling services. This comprehensive Washington Medicare guide covers your SHIP office contacts, Medigap plan availability, birthday rule protections, Medicare Savings Program eligibility, Medicare Advantage options, and how to compare plans. Whether you are turning 65, helping a parent navigate Medicare, or re-evaluating your coverage, understanding Washington Medicare rules is essential for making informed decisions.
All information in this guide has been verified against official state sources, CMS data, and NAIC reports as of April 2026.
In This Washington Medicare Guide:
Washington SHIP — Free Medicare Counseling
Every state has a State Health Insurance Assistance Program (SHIP) that provides free, unbiased Medicare counseling. Washington’s SHIP program can help you understand your coverage options, compare plans, resolve billing issues, and navigate enrollment periods at no cost.
| SHIP Program | Statewide Health Insurance Benefits Advisors (SHIBA) |
| Phone | 1-800-562-6900 |
| Website | https://www.insurance.wa.gov/SHIBA |
SHIP counselors are trained volunteers and staff who are not affiliated with any insurance company. They do not sell plans. Contact your Washington SHIP office before making any major Medicare decisions.
Washington Medigap (Medicare Supplement) Plans
Medigap plans in Washington help cover out-of-pocket costs not paid by Original Medicare, including the Part A deductible, Part B coinsurance, and skilled nursing facility copays. Medigap plans are standardized by federal law, meaning Plan G from one carrier covers the same benefits as Plan G from another carrier. The difference is premium cost.
Plans available in Washington: A, B, C, D, F, G, K, L, M, N (Plans C and F available only to those first eligible for Medicare before January 1 2020)
Most popular plan: Plan G (approximately 90 percent of new Medigap enrollees in Washington choose Plan G) is the most popular Medigap plan in Washington. Plan G covers all gaps in Original Medicare except the annual Part B deductible ($240 in 2026). Plan N is the most popular lower-premium alternative, with small copays for some doctor visits and ER visits.
Pricing method: Washington uses community-rated Medigap pricing. This is the most favorable method for consumers because premiums are the same regardless of age. Your premium will not increase simply because you get older.
The average monthly Plan G premium for a 65-year-old in Washington is approximately $259. Plan N averages approximately $200 per month. Actual premiums vary by carrier, age, gender, tobacco use, and zip code. Always compare quotes from at least three carriers.
Washington Medigap Switching Rights
Washington does not have a Medigap birthday rule. Your primary opportunity to buy or switch Medigap plans without medical underwriting is during your initial Medigap Open Enrollment Period, which lasts 6 months starting when you first enroll in Medicare Part B at age 65 or older.
After your initial OEP closes, you may face medical underwriting if you apply for a new Medigap policy. However, federal law provides guaranteed issue rights in specific situations, such as losing employer coverage or leaving a Medicare Advantage plan during your first year.
Washington guaranteed issue protections: Washington state law allows Medigap enrollees with Plan B through N to switch to any other Plan B through N at any time year-round without medical underwriting, as long as they have been covered for at least 90 days. Plan A holders can switch to any other Plan A. Pre-existing condition waiting periods are limited to 3 months under state law, shorter than the federal 6-month maximum.
Washington Medicare Advantage (Part C)
Approximately 1545839 (2026 CMS data) people in Washington are enrolled in Medicare. About 49 percent (748158 MA enrollees out of approximately 1.52 million total beneficiaries as of September 2024) of Washington Medicare beneficiaries choose Medicare Advantage plans, with the remainder on Original Medicare with or without Medigap supplement coverage.
Medicare Advantage plans in Washington are offered by private insurers as an alternative to Original Medicare. Most MA plans include prescription drug coverage (Part D) and often add dental, vision, and hearing benefits. However, MA plans use provider networks, which can limit your choice of doctors and hospitals.
Key Medicare Advantage considerations in Washington:
- Networks matter: HMO plans require you to use in-network providers except in emergencies. PPO plans allow out-of-network care at higher cost.
- $0 premium plans: Many Washington MA plans have $0 monthly premiums (you still pay your Part B premium).
- Maximum Out-of-Pocket (MOOP): MA plans cap your annual spending, unlike Original Medicare which has no cap.
- Star ratings: CMS rates MA plans 1-5 stars. Higher-rated plans often have lower costs and better coverage.
Top Medicare Advantage carriers in Washington by enrollment:
- UnitedHealthcare
- Kaiser Permanente
- Humana
- Aetna
- Community Health Plan of Washington
Washington Medicare Financial Help Programs
Washington offers Medicare Savings Programs (MSPs) that help low-income Medicare beneficiaries pay for premiums, deductibles, and copays. The four programs are:
- QMB (Qualified Medicare Beneficiary): Pays Part A and Part B premiums, deductibles, coinsurance, and copays.
- SLMB (Specified Low-Income Medicare Beneficiary): Pays Part B premiums only.
- QI (Qualifying Individual): Pays Part B premiums (limited funding, first-come first-served).
- QDWI (Qualified Disabled Working Individual): Pays Part A premiums for disabled workers.
Washington MSP eligibility: QMB (110 percent FPL): 1483 per month individual, 2004 per month couple | SLMB (120 percent FPL): 1616 per month individual, 2185 per month couple | QI (138 percent FPL): 1855 per month individual, 2510 per month couple (effective April 1 2026, no asset test)
Apply through your local SHIP office or your state Medicaid agency for free help determining eligibility.
Top Medicare Insurance Companies in Washington
Top Medigap carriers in Washington:
- Regence BlueShield
- Premera Blue Cross
- Cigna
- Ace Property and Casualty
- Medico Corp
When comparing carriers, focus on premium cost (for identical standardized Medigap plans, benefits are the same — only price differs), financial strength ratings from AM Best (A or higher), customer satisfaction ratings, and claims processing speed.
Washington Medicare Enrollment Periods
Understanding Medicare enrollment deadlines prevents costly late enrollment penalties:
- Initial Enrollment Period (IEP): 7-month window around your 65th birthday (3 months before, birthday month, 3 months after). Enroll in Parts A and B during this period.
- Medigap Open Enrollment: Standard federal 6-month Medigap OEP beginning when you are both age 65 or older and enrolled in Part B. Washington also provides year-round guaranteed issue switching rights for existing Medigap enrollees after 90 days of coverage.. During this period, insurance companies cannot deny you Medigap coverage or charge higher premiums based on health conditions.
- Annual Enrollment Period (AEP): October 15 through December 7 each year. Switch between Original Medicare and Medicare Advantage, change MA plans, or add/change Part D drug plans.
- Medicare Advantage Open Enrollment Period (OEP): January 1 through March 31. Switch MA plans or return to Original Medicare (and add a Medigap plan, subject to underwriting).
- Special Enrollment Periods (SEP): Available when you lose employer coverage, move, or qualify for other life events.
Additional Washington Medicare protections: Year-round guaranteed issue switching for Medigap Plans B through N without medical underwriting after 90 days of coverage. Pre-existing condition waiting periods capped at 3 months instead of the federal 6-month maximum. Community-rated pricing required by law preventing age-based premium increases.
Compare Washington Medicare Plans
Ready to compare Medicare options in Washington? Use the official Medicare Plan Finder or contact your local SHIP counselor for free, unbiased help.
Official Sources & Resources
- Medicare.gov: medicare.gov
- Washington State Office of the Insurance Commissioner: https://www.insurance.wa.gov
- Statewide Health Insurance Benefits Advisors (SHIBA): https://www.insurance.wa.gov/SHIBA
- CMS.gov: cms.gov
- NAIC: naic.org
This Washington Medicare guide was last verified against official sources in April 2026. If you notice outdated information, please contact us.