The PhD program in Biomedical Informatics is part of the Coordinated Doctoral Programs in Biomedical Sciences. Students are trained to employ a scientific approach to information in health care and biomedicine. Students may only enroll full-time, as required by the Graduate School of Arts and Sciences (GSAS). The first two years are generally devoted to coursework and research. Subsequent years focus on independent research that culminates in a dissertation. Our PhD students come from top universities in the country and around the world. The group is dynamic and engaged, breaking new ground in informatics research as evidenced by their strong publication records. Our students are highly collaborative, frequently assisting on each other's projects, sharing ideas, and supporting each other. Upon satisfactory completion of an MPH degree, students are able to discuss the role of epidemiology within the broader field of public health and identify its relationship medicine, social and behavioral sciences, environmental science, and health policy. Graduates can explain and analyze the distribution and determinants of both chronic and infectious diseases in different populations, apply principles of disease prevention within populations, discuss contemporary issues in epidemiological research in at least three substantive areas (e.g., diseases, other health outcomes, exposures) and identify potential ethical problems in research studies, evaluate alternative approaches to solving ethical dilemmas, and apply the principles underlying ethical treatment of human subjects in research.