Jennifer Ellyn Johnson is a Charles Stewart Mott Endowed Professor of Public Health at Michigan State University College of Human Medicine. Dr. Johnson earned her Bachelor of Science degree in physics and doctorate in clinical psychology from Brigham Young University. She conducts NIH-funded randomized trials to determine the effectiveness and cost-effectiveness of mental health and substance use interventions for vulnerable populations such as pregnant women, prisoners and jail detainees. Her research in implementation science also examines ways to change policies and systems to better support mental health care for vulnerable populations. Dr. Johnson has been the principal investigator of eight National Institutes of Health awards, totaling more than $14 million.