Medigap in Mercer Island, WA: Medicare Supplement plans and insurers

CMS lists 13,303 clinicians with practice locations within 8 miles of Mercer Island, including 4,432 in primary care (family and internal medicine, nurse practitioners and physician assistants). 539 of them (4.1%) are listed as sometimes declining assignment, close to the 4.5% statewide figure. Ask each provider whether they accept assignment; if they all do, Plan N's excess-charge gap won't affect you. Within 25 miles, CMS lists clinicians in physical therapy, mental health, eye care, cardiology, cancer care, neurology, and chiropractic. Practices with Medicare clinicians near Mercer Island include Overlake Medical Clinics LLC, Kaiser Foundation Health Plan of Washington, Ideal Option PLLC, International Community Health Services, and Washington Luna Care Physical Therapy LLC.

The closest hospital to Mercer Island is Overlake Hospital Medical Center & Clinics in Bellevue, about 4 miles away. The highest-rated hospital in that list is Swedish Medical Center / Cherry Hill, 4 of 5 stars on CMS's overall rating. Medigap has no hospital network: the Part A deductible ($1,736 in 2026) is covered the same here as anywhere.

4 Medicare-certified nursing homes are within 35 miles of Mercer Island. The highest-rated is Covenant Shores Health Center in Mercer Island (5 of 5 stars). Plans G and N pay the $217-a-day coinsurance for days 21 to 100 (2026).

Of the regional Blue plans, Regence BlueShield sells in King County. WSHIP status: reasonable-choice county (what that means). See the King County page for the county-wide view.