My research program is designed to contribute to the design and delivery of effective community-based HIV prevention services. My work emphasizes the needs and experiences of the population at highest risk in the nation, adolescent and young adult Black sexual minority males. I am interested in identifying structural and community-level HIV prevention programs that are effective in reducing HIV-related risk behavior among high-risk young sexual minority men and in facilitating their timely access to treatment. I also focus on delineating the contextual conditions in AIDS-related organizational environments that contribute to sustainable HIV prevention, HIV testing, and linkage-to-care activities from the perspective of program evaluation and implementation science. My research is grounded in the idea that a program and its environmental host combine to make a causal package; one cannot understand what makes a program effective and consider where and for whom else it might be effective without treating the program's context as part of the program. I am also an evaluation scholar and conduct research on evaluation theory and practice.