Faculty
![Caleb Alexander Caleb Alexander](/sites/default/files/styles/people_card_360/public/images/2761.jpg?h=637ed3e9&itok=nKW5rsbR)
G. Caleb Alexander, MD, MS, is a practicing internist and epidemiologist focused on maximizing the use, safety, and effectiveness of prescription medicines.
![Keri Althoff Keri Althoff](/sites/default/files/styles/people_card_360/public/images/2177.jpeg?h=6e25390b&itok=nESdUpio)
Keri N Althoff, PhD '08, MPH '05, uses large-scale longitudinal data to answer otherwise unanswerable questions and improve health, particularly for populations underrepresented in research.
![](/sites/default/files/styles/people_card_360/public/2023-10/angell.jpg?h=0882fe79&itok=_k8mANfg)
Sonia Angell, MD, MPH, works on research, policies, and programs at the intersection of population health and care delivery systems, environmental and planetary health, and health equity.
![David Celentano David Celentano](/sites/default/files/styles/people_card_360/public/images/122.jpg?h=b907dea2&itok=LWbTbbuA)
David Celentano, ScD ’77, MHS ’75, is an infectious disease epidemiologist who researches behavioral risk factors for HIV/AIDS, STIs, and other infections.
![](/sites/default/files/styles/people_card_360/public/2024-04/hart1601.jpg?h=d8102449&itok=xZZVWegB)
Javier Cepeda, PhD, MPH, researches the intersecting epidemics of substance use, infectious disease, and justice involvement, as well as interventions needed to reduce these harms on public health.
![Aruna Chandran Aruna Chandran](/sites/default/files/styles/people_card_360/public/images/1612.jpg?h=6605c1c0&itok=9YHCKQc6)
Aruna Chandran, MD, MPH ’04, studies how household and neighborhood factors affect health outcomes, and how resiliency factors can be leveraged to improve well-being.