[4] The Corvallis-based nonprofit was founded in 1997 when Mid-Valley Healthcare in Lebanon and Samaritan Inc. of Corvallis merged in an effort to more efficiently serve their communities.

Samaritan Inc. began in 1948 when the Episcopal Church in Western Oregon, enabled the Corvallis General Hospital's reorganization as a not-for-profit facility.

In 2011, Samaritan Health Services partnered with Western University of Health Sciences to start the College of Osteopathic Medicine of the Pacific, Northwest (COMP-NorthWest) on Samaritan's 54-acre 'Health Science Campus' in Lebanon, the first Oregon medical school to open in more than 100 years.

The only hospital in the city, it is a level II trauma center, and serves the Linn, Benton, and Lincoln County area.

Services include a level III trauma center,[16] as well as the first open magnetic resonance imaging facility in the middle Willamette Valley.

During 2022, AGH served 2,473 inpatients, had 23,068 emergency department visits, performed 4,448 surgeries and delivered 415 babies.

During 2022, LCH served 1,389 inpatients, had 21,768 emergency department visits, performed 2,347 surgeries, and delivered 255 babies.

Samaritan Pacific Communities Hospital (44°37′45″N 124°03′32″W / 44.6291°N 124.0590°W / 44.6291; -124.0590 ) is a 25-bed acute care medical facility at 930 SW Abbey Newport, Oregon, United States.

SHS also operates 3 'Express Care' Walk-in Clinics named SamCare Express in Lincoln City, Albany and Corvallis.

The SamCare Express clinics offer same-day treatment of minor illnesses and injuries that are not life-threatening.

SHS is partnered with the InterCommunity Health Network (IHN) Coordinated Care Organization (CCO).

Plans for Oregon's first medical school in 100 years were announced as early as 2007,[33] and in January 2008 it was announced the Western University of Health Sciences would partner with Samaritan Health Services to operate an Oregon branch on Samaritan's 54-acre 'Health Sciences Campus.

[38] In 2018, Doug Boysen, former vice president and General Counsel, was appointed as CEO of the health system.

Healthgreades also recognized Samaritan Albany General Hospital as a Five-Star Recipient for C-Section Delivery in 2020.

In 2021 SHS was named one of U.S. Veterans Magazine 'Best of the Best Top Veteran-Friendly Companies' for the sixth year in a row.