The investigators propose a 5-year mixed methods study and will conduct a RCT, with randomization occurring at the level of the care team and patient. The investigators partner with 5 Venice Family Clinic (VFC) clinics, two hospitals in LA County, and COPE Health Solutions. VFC is a large federally qualified health center (FQHC) and the largest free clinic in the United States. Our approach includes document review, focus groups, interviews, and surveys for obtaining data on the adoption process and implementation outcomes; analysis of patient records and patient surveys on service system and patient outcomes; and analysis of provider financial records and patient records and surveys for estimating costs. The investigators will enroll 400 patients with an OAUD diagnosis and follow them at 3 and 12 months. Our specific aims are: 1) To measure the process and extent of ICC and E&R implementation; 2) To test the effectiveness of ICC compared to an E&R strategy in promoting A. Implementation outcomes B. Service system outcomes and C. Patient outcomes; and 3) To estimate provider costs for each strategy. The investigators define implementation outcomes as measures of the acceptability, adoption, appropriateness, feasibility, and sustainability of evidence-based OAUD treatment. The investigators define service system outcomes as 1) process measures of treatment quality and 2) treatment co-morbidities. The investigators define patient outcomes as hospital readmissions, OAUD outcomes, patient functioning, negative consequences from substance use, and unmet need. The investigators define cost outcomes as start-up costs, operating costs and medical/psychiatric cost offsets.