RecruitingClinical trialSupporting Treatment Access and Recovery in CODThis 4-year study will randomize 1,000 people with co-occurring opioid use and mental health disorders (COD) at medication for opioid use disorder (MOUD) clinics to evaluate the effectiveness of MISSION, a multi-component team approach, or its components with MOUD versus MOUD alone, as well as the incremental benefits of MISSION or its components for improving outcomes. We expect that individuals receiving MISSION or its parts + MOUD will show greater improvement over MOUD alone on: engagement, substance use, and mental health.