Dr. Cathy Reback is a Senior Research Scientist with Friends Research Institute. She also founded and leads the Friends Community Center, a community-based research site. In addition, she is a researcher at the UCLA David Geffen School of Medicine and directs the Combination Prevention Core for UCLA CHIPTS. Throughout her career, the focus of Dr. Reback’s research has been the examination of the intersection of substance use disorders and HIV risk behaviors among gender and sexual minority individuals. Dr. Reback has an extensive and established scientific career designing, implementing, and evaluating large-scale HIV prevention and treatment clinical trials including behavioral and biomedical treatment therapies, technology-facilitated and mHealth interventions, qualitative and quantitative mixed methods research, venue- and street-based programs. In collaboration with several local, national, and international community-based organizations, Dr. Reback has used implementation science methodology to adopt, tailor, and transfer her evidenced-based interventions into public health and community settings. Dr. Reback’s community and policy work includes current and past membership on numerous local and national HIV/AIDS and substance use task forces and advisory committees; she has been the recipient of several awards in recognition of her scholarly and community work.