Tommi Gaines: Dr. Gaines is a biostatistician whose research utilizes statistical and spatial methodologies to examine the social and structural conditions impacting individual health. Through collaborative and cross-disciplinary partnerships, she has led several analyses addressing patterns of infectious disease and substance use in context of geographical, social, and political factors. She is particularly interested in addressing health inequities among marginalized and vulnerable populations.  Her research is currently focused on examining the opioid epidemic in Southern California and HIV awareness and prevention among Southern California Tribal communities.