Jaan Altosaar is a Postdoctoral Research Scientist at Columbia University Irving Medical Center focused on machine learning methods that improve the decisions people make in health and science. He completed his Ph.D. at Princeton University advised by David Blei and Shivaji Sondhi. During his Ph.D., he worked at the Center for Data Science at New York University, Google Brain, and DeepMind, and his work was supported by fellowships from the Natural Sciences and Engineering Research Council of Canada. Prior to Princeton, Jaan earned his B.Sc. in Mathematics and Physics from McGill University and founded usefulscience.org, a nonprofit that makes accessible the science that can improve daily life. He has built probabilistic machine learning methods for hospital readmission prediction, recommender systems, and statistical physics simulations, and is now building methods that address issues in mental health, health disparity, and women's health.