His research focuses on structural, organizational, and interpersonal factors that influence the utilization of HIV-related treatment and prevention services. This work encompasses studies of health policies and systems of care, as well as projects investigating the impact of stigma on people living with or affected by HIV. Dr. Steward directed the evaluation of CHRP’s Patient-Centered Medical Homes (PCMH) Initiative and currently serves as Principal Investigator of the evaluation center for a Health Resources and Services Administration (HRSA) initiative to implement practice transformations to enhance the delivery of HIV care in primary care settings.