Buprenorphine is an evidence-based treatment for opioid use disorder that also has strong potential to reduce HIV transmission in people who use drugs. Rural health care professionals are eligible and critically needed to provide these medications, but stigma currently limits provider willingness to prescribe buprenorphine, especially in regions where mortality and HIV transmission secondary to opioid use are high. In this developmental trial, the investigators will adapt, refine, and test the feasibility of a prototype brief stigma-reduction training intervention aimed at increasing buprenorphine prescribing in the rural primary care setting.