The focus of my research is to examine health inequities among under resourced populations. I engage in theoretically driven studies that seek to disentangle the effects of different social determinants of health on the outcomes of these populations. Primarily, most of my research agenda have focused on drug use and abuse, healthcare utilization, mental health, sexually transmitted infections, and HIV/AIDS prevention and care. My scholarly contribution involves: 1) examining the intersection of substance use, sexual risk, and mental health; 2) studying issues of access and health care utilization among people of color who use drugs; and 3) evaluating the role of drug use on key health outcomes.