Washington State Medicare Supplement Plans Comparison
Overview of Medigap Plans in Washington
Medicare Supplement (Medigap) plans in Washington are designed to help cover the out-of-pocket costs that Original Medicare (Parts A & B) does not pay, including copays, coinsurance, and deductibles. There are 10 standardized Medigap plans available-Plans A through N. Each plan offers a unique mix of benefits, making it essential to compare options to determine the best fit for your healthcare and budgetary needs.
Unlike Medicare Advantage (Part C) plans, which replace Original Medicare, a Medigap policy is meant to supplement your existing coverage. You cannot use a Medigap plan with Medicare Advantage at the same time.
Comparison of Medigap Plan Types (A-N) and Monthly Costs
Standardized Medigap Plans in Washington
Medigap plans sold in Washington are standardized by federal law. This means Plan G from one insurer offers the same core benefits as Plan G from another insurer, though premiums and additional perks may differ. The most popular plans include Plan G, Plan N, and (for those eligible) Plan F.
| Plan | Basic Benefits | 2024 Typical Monthly Premium* |
|---|---|---|
| Plan A | Basic benefits | $120-$170 |
| Plan F** | Comprehensive (deductibles & excess charges) | $180-$290 |
| Plan G | Similar to F (excludes Part B deductible) | $150-$260 |
| Plan N | Lower premiums; cost sharing (office copays) | $110-$200 |
| Plan K | 50% coverage for many benefits | $60-$120 |
*Estimated ranges for a 65-year-old enrollee in Western Washington (2024 rates). Premiums may be higher based on age, location, tobacco use, and insurer.
**Plan F is only available to those first eligible for Medicare before January 1, 2020.
Coverage Differences: Examples
- Plan G is favored by those seeking nearly full coverage, with only the Medicare Part B deductible as an out-of-pocket cost.
- Plan N offers lower premiums but requires copays for certain doctor and ER visits, suitable for those comfortable with some cost-sharing.
- Plan K is the most budget-friendly but covers only half of most cost-sharing, with higher out-of-pocket responsibility in exchange for low premiums.
Medigap premiums are projected to rise by 8-12% in 2026. It’s wise to compare Medigap costs annually and shop around to avoid overpaying.
Enrollment Periods and Eligibility Rules
Who Is Eligible for Medigap in Washington?
To enroll in a Medicare Supplement plan in Washington, you must be at least 65 years old and have both Medicare Part A and Part B. Enrollment is not automatic; you’ll need to apply for Medigap coverage once you meet eligibility requirements. If you want to learn about eligibility for a spouse, visit Eligibility and Coverage Rules for Spouse Medicare Benefits.
Medigap Open Enrollment Period
Your personal 6-month Medigap Open Enrollment Period starts when you’re both 65 and enrolled in Medicare Part B. During this window, you have a guaranteed right to buy any available Medigap plan in Washington, regardless of your health history. This is the best time to enroll because medical underwriting is prohibited-insurers can’t deny you coverage or charge higher rates due to pre-existing conditions.
After your Open Enrollment Period, you may still apply for Medigap, but companies can use medical underwriting and possibly deny you or increase your rates. Some situations-such as losing other insurance coverage-may trigger a special guaranteed-issue right (usually within 63 days of losing coverage).
Washington’s Unique Switching Rule
Washington stands out for consumers: residents are allowed to switch between Medigap plans B through N at any time, without medical underwriting. If you’re currently enrolled in a Medigap plan, you can move to any other plan (B-N) as long as you don’t have Plan A. Those with Plan A can only move to another Plan A.
Limitations: Medigap vs. Medicare Advantage in Washington
The Key Differences
| Feature | Medigap | Medicare Advantage |
|---|---|---|
| Works With | Original Medicare (Parts A & B) | Replaces Original Medicare |
| Provider Network | Any provider nationwide in Medicare | Plan’s local network, county-based |
| Drug Coverage | Not included; add Part D | Usually included |
| Out-of-Pocket Max | No annual cap | Annual maximum limit |
| Flexibility | High – use any Medicare provider | Limited by network |
Many seniors compare Medigap vs Medicare Advantage in WA to determine the best value. While Medigap plans offer broad provider access and predictable costs, Medicare Advantage often features lower monthly premiums and includes prescription drug coverage, but with restrictions to local networks.
Remember: You cannot combine Medigap and Medicare Advantage coverage. It’s essential to review your needs and preferences carefully when choosing between these options.
Guaranteed-Issue Options: WSHIP Medical Supplement Plan
What Is WSHIP?
If you’re denied a traditional Medigap policy due to health reasons and lack other options, Washington offers the WSHIP Medical Supplement plan. WSHIP (Washington State Health Insurance Pool) provides a safety net for those unable to secure coverage in the standard market.
WSHIP Eligibility & How It Works
- Available to eligible Washington residents who cannot buy a standard Medigap policy due to health reasons.
- Must have Original Medicare (Part A & B).
- WSHIP Medical Supplement typically covers a portion of your out-of-pocket costs, but premiums may be notably higher than standard Medigap plans.
- If you regain eligibility for private Medigap, you may switch out of WSHIP.
For personalized help on WSHIP eligibility, consider consulting the CMS Medicare contact resources or contact Washington’s Statewide Health Insurance Benefits Advisors (SHIBA).
Frequently Asked Questions
What are the best Medigap plans in Washington?
The most popular Medigap plans in Washington are Plan G (greatest coverage for new enrollees), Plan N (lower premiums with some cost-sharing), and Plan F (only for those first eligible for Medicare before 2020). Your ideal Medigap plan depends on your healthcare needs and budget.
How do Medigap premiums work in Washington?
Medigap premiums vary by plan type, insurer, age, smoking status, and location. Washington Medigap costs are generally community-rated or attained-age rated. Shop each year, especially as premiums are slated to rise 8-12% in 2026.
Can I be denied Medigap coverage for health reasons?
If you apply during your Medigap Open Enrollment period or have a guaranteed-issue right, you cannot be denied. Outside of these periods, you could face denial or higher premiums-unless you use Washington’s unique switching rule or apply for WSHIP Medical Supplement coverage.
Does Medigap cover prescription drugs or eyeglasses?
No. Medigap plans do not cover prescription drug costs. You’ll need to buy a separate Medicare Part D plan. For vision coverage, including eyeglasses, see Medicare Eyeglasses Coverage.
Where can I get help comparing Medigap plans?
Contact Statewide Health Insurance Benefits Advisors (SHIBA) for free guidance. Use Medicare.gov or CMS Medicare contact options for detailed plan information.
How to Choose the Best Medigap Plan for You
Practical Decision-Making Tips
- List your doctors and providers. Ensure any needed providers accept Original Medicare.
- Review your medical expenses from the past year. Consider which costs (deductibles, copays, coinsurance) impacted your budget the most.
- Compare Medigap plans and Medigap premiums side by side. Factor in anticipated premium increases for 2026.
- Geography matters: Premiums are set by location and insurer. Not all companies offer every Medigap plan in all Washington counties, so review your local offerings closely.
- Check whether additional coverage is important to you, such as foreign travel emergency, which only some Medigap plans include.
- If your spouse needs Medicare coverage too, you may want to learn more about spousal eligibility and benefits.
- Remember to enroll in a standalone Part D plan to cover prescription drugs.
Washington’s Medicare Supplement market is among the most consumer-friendly in the nation, especially with its unique plan-switching flexibility and the WSHIP Medical Supplement safety net. Taking time to review current options, projected premium changes, and your personal health needs will help you make a confident, informed choice for 2024 and beyond.
