Medicare Supplement Cost in Seattle, WA

Medicare Supplement (Medigap) Plan G in Seattle, Washington costs approximately $189/month for a 65-year-old non-smoker. Plan N costs about $146/month. Rates are 22% above the national average of $155/month for Plan G. Washington uses above-average Medigap pricing. Always compare quotes from 3+ insurers — rates vary 20–40% for identical plans.

For most Seattle residents enrolling in Medicare after January 1, 2020, Plan G is the most comprehensive option available. Plan G covers everything Medicare leaves behind except the Part B deductible ($240/year in 2026). Plan N is similar but adds copays up to $20 for doctor visits and $50 for ER visits, saving $43/month vs. Plan G. If you rarely visit the doctor, Plan N may be more economical.

The best time to enroll is during your 6-month Medigap Open Enrollment Period — it starts the month you turn 65 AND are enrolled in Medicare Part B. During this window, Washington insurers cannot deny coverage or charge more for pre-existing conditions. After this window, medical underwriting applies in most states, and you may be denied or face higher premiums. Washington has guaranteed-issue rights that extend beyond the initial enrollment period.

Plan G in Seattle costs approximately $2268/year in premiums. Without Medigap, you'd face: no out-of-pocket maximum on Medicare Part B (20% of all services, unlimited), a $1,632 Part A deductible per hospitalization in 2026, and $400/day skilled nursing copay for days 21–100. One serious hospitalization can easily cost $10,000–$30,000 in Medicare gaps. For Seattle residents with any significant health needs, Plan G often pays for itself within 1–2 hospital stays.

All Plan G policies offer identical benefits by federal law — the only difference between insurers is price. To compare in Seattle: use Medicare.gov's Plan Finder, call an independent Medicare broker (free service, paid by insurers), or use comparison sites like eHealth Medicare or GoHealth. Get quotes from at least 3 insurers. Rates for the same Plan G can differ by $30–$60/month in Seattle — that's $360–$720/year for identical coverage.