About Us

Who We Are

Photo Credit: Kelli Lee

Thurston Mason Behavioral Health Administrative Service Organization (TMBH-ASO) is governed by a Board of Directors consisting of County Commissioners from both Thurston and Mason.  

TMBH-ASO contracts with Washington State Health Care Authority (HCA), Molina Health, Amerigroup, United Health, and Coordinated Care (for foster care only) to provide care to individuals in the two-county region who are experiencing a crisis due to a behavioral health disorder.

Crisis services will be provided for those eligible for Medicaid (Apple Health) and all others, regardless of income or insurance status. 

Thurston Mason BH-ASO may also provide a limited array of other behavioral health services for individuals not eligible for Medicaid. 

Our Mission: Provide access to an effective, reliable safety net of behavioral health crisis and recovery support services throughout our region.

Thurston Mason Behavioral Health Administrative Service Organization

612 Woodland Square Loop SE 

Suite 401

Lacey, WA 98503

inquiries@tmbho.org

Office: 360-763-5828

Crisis Line:  800-270-0041