Robert Gross, MD, MSCE is a tenured Professor of Medicine and Epidemiology. His roles include Co-Director of the Penn Center for AIDS Research (CFAR), Director of the Penn CFAR International Core in Botswana, Co-Director of the Clinical Assessment Core of the Penn Mental Health AIDS Research Center, and Senior Scholar in the Center for Clinical Epidemiology and Biostatistics. Dr. Gross's research has focused on HIV outcomes, with a particular emphasis on the continuum of care and prevention in both the developed and developing worlds in both adults and adolescents. His work has addressed issues of measurement, determinants, and interventions to improve adherence and retention to treatment and prevention. Dr. Gross and his team developed the Managed Problem Solving HIV medication adherence intervention, which has been endorsed as an Evidence Based Intervention by the CDC. Other lines of research include the impact of pharmacogenetics on HIV outcomes and the determinants of and interventions for tobacco smoking in people living with HIV. In addition to his research focus in Botswana, he is also training emerging researchers from there in HIV clinical research principles and practice.