His primary research interests include the epidemiology, dynamics, implementation, and economics of TB diagnosis and treatment. David finished his MD/PhD at Hopkins and a residency in internal medicine at UCSF before returning to the faculty at Hopkins in 2011. He is a member of the steering committee of the Gates Foundation's TB Modeling and Analysis Consortium (TB-MAC), sees patients in internal medicine at East Baltimore Medical Center (an urban outpatient clinic), and is the director of the Translational Epidemiology Initiative at Johns Hopkins. David has particular interests in mentoring a new generation of scientists with an interest in TB; seeing the outdoors; playing tennis; and spending time with his 13-year-old daughter, Chesapeake.