It has two general hospitals in Kirkland and Monroe, and several smaller clinics and urgent care facilities in King and Snohomish counties.

A public hospital district was formed by a voter-approved ballot measure in 1967 to serve northeastern King County, which had experienced population growth that caused strain on existing medical facilities.

[13] A 15-bed hospice opened on the Evergreen campus in February 1991, funded by a $4.4 million bond measure approved by voters in September 1988 that came months after a hospital expansion was rejected.

[18][19] The east wing housed the first magnetic resonance imaging (MRI) machine on the West Coast, which was installed in January 1993.

[22] The organization was renamed in 1996 to Evergreen Healthcare Medical Group and began opening primary care facilities around the Eastside in the 2000s.

[33] By late March, the number of reported cases at the hospital had slowed to less than four per day and the intensive care unit was half-full.

[34] The hospital system received $43 million in CARES Act grants from the federal government in 2020 and 2021, which were used to offset unexpected costs during the COVID-19 pandemic.

The grants were counted as part of annual revenue, which triggered bonuses for managers and administrators despite reported operating losses.

[40] EvergreenHealth operates primary care centers and clinics in Canyon Park, Duvall, Kenmore, Kirkland, Mill Creek, Monroe, Redmond, Sammamish, Sultan, and Woodinville.

[43][44] The Monroe facility is managed by an Alliance Governance Board with representatives from EvergreenHealth and the Snohomish County Public Hospital District No.