Global and Community Health Faculty and Staff

Dr. Griffin is a Professor in the Department of Global & Community Health at George Mason University. His research focuses on health risk behaviors such as substance use and abuse (including prescription drugs and opioids), violence and aggression (including bullying and sexual violence) and related behaviors among children, adolescents, and young adults.

Jhumka Gupta, ScD, is a Professor in the Department of Global and Community Health within the College of Public Health. Her research program applies a social epidemiology framework toward advancing the science of gender-based violence against women and girls (e.g. intimate partner violence, sex trafficking).

Dr. Madina Khamzina advances health equity, digital inclusion, and aging through research, education, and global community engagement.

Dr. Jenna R. Krall is an associate professor in the Department of Global and Community Health. Krall is a biostatistician with research interests in air pollution and environmental epidemiology.

Rupali J. Limaye, PhD, MPH, MA, is an Associate Professor. She is seen as an expert in vaccine behavior and decision-making, including vaccine hesitancy and acceptance. Primarily focusing on infectious diseases, Dr. Limaye is a social and behavioral scientist and health communication scholar. Her mixed-method work examines how various influences affect health behavior and how to leverage those influences to affect positive behavior change.

Sarah Liu is the MPH program coordinator with the Department of Global and Community Health. She has a background in global maternal and child health and is passionate about working towards achieving equity in reproductive and sexual health in vulnerable populations. Her passion in Public Health started when she traveled to El Salvador through the alternative trip program at Mason which focused on reproductive health rights in women and adolescents and violence prevention. She has experience in working with organizations working on targeting period poverty and postpartum mood and anxiety disorders (PMADs). 

Dr. James Metcalf is a professor in the Department of Global and Community Health. Teaching represents 100% of his current assignment, but he maintains research interest in personal health, current environmental conditions (hydrilla overgrowth in the upper tidal Potomac River); and most recently, the analysis of health-related themes in classical literature

Dr. MB (Marybeth) Mitcham is an Assistant Professor and the Director of the Online MPH Program in the Department of Global and Community Health. Mitcham’s research interests include the effect of intergenerational learning opportunities on healthy behavior patterns, rural gender identity, the intersection of plant-rich diets and rural populations, and effective public health education methods.

Dr. Jessica Mitro is an Assistant Professor in the Department of Global and Community Health. She is passionate about access to and mobilization of knowledge and excited to support our future community, public health, and healthcare professionals.

Rima Nakkash is Interim Chair and Professor in the Department of Global and Community Health. Nakkash is a leading international scholar in tobacco control research in prevention and policy evaluation.