Dr. Darren L. Whitfield, a 2018-2019 HPTN Domestic Scholar, is an associate professor of Social Work at the University of Maryland Baltimore. His primary research focus is on understanding the impact of psychosocial and structural factors on health and mental health outcomes among Black men who have sex with men (MSM), Black transgender women, and LGBTQ communities. He has extensive experience conducting research with young Black MSM on PrEP adherence and psychosocial factors, including examining the role of internalized stigma on PrEP use among Black MSM in the United States, correlates of sexually transmitted infections among Black MSM, the influence of risk compensation on PrEP adherence among Black MSM, and the importance of autonomy in PrEP adherence.