Federal initiatives have invested considerable resources to end gun violence. Hospital-based violence intervention programs (HVIPs) are shown to reduce violent injury recidivism and address social needs of trauma-exposed clients. Mental health is a significant need among HVIP clients, yet little research on mental health and HVIPs exists. This community-initiated study utilized a triangulation-convergence mixed-methods design. HVIP programs were recruited for survey development aiming to explore aspects of mental health relevant for populations served by HVIPs, standards of care for mental health care among HVIPs, and the function and utility of community partners. Quantitative surveys (