Barriers to Buprenorphine Treatment Among People Experiencing Homelessness: A Qualitative Study from the Provider Perspective.

People experiencing homelessness (PEH) face a high risk of opioid-related deaths, yet there is limited qualitative data on the barriers encountered when accessing buprenorphine treatment for opioid use disorder (OUD). To address this gap, we interviewed 28 clinicians, outreach workers, and administrators from organizations serving PEH with OUD. Our goal was to understand the barriers and facilitators at the patient, clinic, and institutional levels and gather recommendations for improvement. Interviews, conducted via Zoom and analyzed through thematic analysis, revealed several barriers. At the patient level, themes related to barriers included knowledge and experience (e.g., limited knowledge about buprenorphine options; rejection of buprenorphine due to prior experience with precipitated withdrawal); concerns about the medication and its administration (e.g., distrust of injectable medications; concerns about treatment control, and a prolonged informed consent process for extended-release injectable buprenorphine); and challenges due to homelessness (e.g., identification requirement to access medication at pharmacies, difficulties managing buprenorphine while unsheltered). At the clinic level, themes centered around staffing (e.g., lack of training and experience in treating PEH and staffing shortages) and health care-related stigma (e.g., discriminatory attitudes toward PEH with OUD). Institutional-level themes included state-regulatory factors (e.g., practice regulations limiting clinical pharmacists' ability to prescribe buprenorphine) and access factors (e.g., stigmatization of buprenorphine prescribing, limited low-barrier buprenorphine access, and care system complexity). Recommendations included educational programs for patients and clinicians to increase understanding and reduce stigma, integrating buprenorphine treatment into non-traditional settings, and providing housing with treatment.