Oklahoma Collaborative Care Project - The Oklahoma Department of Mental Health and Substance Abuse Services (ODMHSAS) will increase access to behavioral health services through implementation of the Collaborative Care Model (CoCM) in at least 9 primary care sites. The CoCM is an evidence-based, integrated care approach that addresses mental and substance use conditions in primary care settings. Care is provided by a primary care team and includes a case manager, consulting psychiatrist, and other mental health professionals. Through training, technical assistance and staff support, the ODMHSAS will collaborate with primary care offices to establish sustainable integrated behavioral health and substance use disorder treatment. The ODMHSAS will partner with 3 primary care sites in Tulsa and surrounding areas to reach historically underserved and marginalized populations in year 1 and expand services in years 2-4 to reach Oklahoma City and rural primary care practices.