CoMBAT Opioid Use Disorder

This study seeks primarily to test, in a two-arm randomized controlled trial (RCT), the feasibility, acceptability, and preliminary efficacy of CoMBAT OUD, an intervention that integrates Behavioral Activation (BA) and substance abuse and health navigation counseling for individuals who are receiving medications for opioid use disorder (i.e., methadone; suboxone) to help them improve engagement in care and opioid use treatment outcomes. Participants will be randomized 1:1 to two arms: (1) the CoMBAT intervention (2 sessions of substance abuse and health navigation counseling + 8 sessions of BA counseling); or the (3) the standard of care (SOC) comparison condition, including two equivalent substance abuse and health navigation counseling. Participants will be followed for 6 months post-randomization, with assessments at months 3 and 6.