In this cluster randomized controlled trial, the primary research question is to test the impact of the PRB implemented in conjunction with the NIATx organizational change model, relative to the control, on increasing the number of buprenorphine treatment slots and extended-release naltrexone capacity and increasing the number of patients receiving buprenorphine and extended-release naltrexone in the participating addiction treatment organizations. The secondary research question is to test if the PRB affects factors likely to be associated with prescriber recruitment, including: resources dedicated to prescriber recruitment, prescriber recruiter motivation, and current employed physician satisfaction. Lastly, qualitative methods will be used to study the context and processes that influence PRB adoption and fidelity and to understand and develop a deeper understanding of how the PRB influences recruitment beyond the existing study variables.