Professor in the Dept of Global Health and Population and a Department of Global Health and Social Medicine Affiliate
My research focuses on HIV in impoverished populations. In 1996, I launched a series of studies in HIV+ homeless and marginally housed individuals in response to concerns that poor adherence to HIV antiretroviral treatment in the urban poor would create new strains of drug resistant virus. I described the challenges in providing antiretroviral therapy to the urban poor, developed valid measures of adherence, defined the risk of antiretroviral resistance by level of adherence, and developed effective interventions to improve adherence in the HIV+ urban poor.
Assistant Professor of Medicine and a Department of Global Health and Social Medicine Affiliate
As a practicing primary care physician, leader, and health systems innovator, my work centers on improving the measurement and delivery of primary care nationally and globally. I have a particular focus on the implementation and evaluation of new team-based models of primary care delivery, and their associated payment structures. In the past, I studied the epidemiology and control of non-communicable diseases in low and middle income countries, with a focus on global tobacco control.