Medigap in Marietta-Alderwood, WA: Medicare Supplement plans and insurers

CMS lists 1,321 clinicians with practice locations within 8 miles of Marietta-Alderwood, including 497 in primary care (family and internal medicine, nurse practitioners and physician assistants). 104 of them (7.9%) are listed as only sometimes accepting assignment, against 4.5% statewide. Those providers can bill up to 15% above the Medicare-approved amount. That makes the excess-charge coverage in Plan G worth more in Marietta-Alderwood than in most of Washington. Within 25 miles, CMS lists clinicians in mental health, physical therapy, eye care, chiropractic, cardiology, orthopedics, and general surgery. Practices with Medicare clinicians near Marietta-Alderwood include PeaceHealth, Family Care Network, PLLC, Lummi Indian Business Council, Access Telecare PLLC, and Unity Care Northwest.

The closest hospital to Marietta-Alderwood is PeaceHealth St. Joseph Medical Center in Bellingham, about 3 miles away. 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 Marietta-Alderwood. The highest-rated is Alderwood Park Health and Rehab of Cascadia in Bellingham (5 of 5 stars). Plans G and N pay the $217-a-day coinsurance for days 21 to 100 (2026).

Marietta-Alderwood is about 15 miles from the Canadian border. Medicare pays almost nothing in Canada; Plans G and N pay 80% of emergency care abroad after a $250 yearly deductible (lifetime limit $50,000). Plan K and Plan A don't.

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