The Brown University Hub, titled PIERS (Providing Interventions for Enhancing Recovery during Supervision), will rigorously test a systems-change approach for increasing the use of medications for opioid use disorder (MOUD) in seven community supervision sites in Rhode Island, North Carolina, and Pennsylvania. The project first uses facilitated local change teams consisting of justice and community service providers to develop and implement interorganizational linkage strategies to support access to treatment. In a second stage, individuals under community supervision will be randomly assigned to receive assistance from peer support specialists vs. no peer support. The project aims to test the independent and combined effects of organizational and client-level linkage strategies on outcomes including linkage to OUD treatment, retention, satisfaction, opioid use, opioid overdoses, recidivism, and utilization of recovery services.