About Us

Cornerstone Behavioral Health is a private, not-for-profit division of Mountain Regional Services, Inc. (MRSI). Established in 1985, and first accredited by the Commission on Accreditation of Rehabilitation Facilities (CARF) in 1987, Mountain Regional Services has earned a national reputation for ground breaking work with persons with developmental disabilities and co-occurring mental illness, using community-based residential and day-treatment services in contrast to traditional state-run facilities or inpatient units. Our work with people with developmental disabilities has left us profoundly changed, humbled, and dedicated to valuing the dignity and worth of people traditionally disadvantaged, abused, and socially outcast.

Our experiences with these individuals have shaped the core values of our organization, acutely sensitizing us to the true extent of individual diversity as well as the common essence of what it means to be a human being. These same values and respect for the individual carried over into other dimensions of our work as Cornerstone expanded the breadth of services offered by MRSI by developing general mental health services in an outpatient private-practice setting, and an intensive substance abuse treatment program, both serving Evanston and surrounding rural communities in southwestern Wyoming.

Cornerstone’s substance abuse treatment program is one of only two in the State of Wyoming accredited by CARF. The mental health program received CARF accreditation in the fall of 1997, offering clients professional and confidential services traditionally found in urban environments. Taken together, the program for people with developmental disabilities and co-occurring mental illness, the outpatient mental health practice serving adults, adolescents and children, and the substance abuse program serving adolescents and adults provide a breadth of clinical experience for Cornerstone interns.