Marla Orenstein is the President and founder of Habitat, and President-Elect of the International Association for Impact Assessment. An epidemiologist and an international leader in the field of Health Impact Assessment, Marla’s work at Habitat allows her to indulge her interest in international exploration with her passion for bringing structure, order and clarity to unruly data. Marla is currently Chair of the Publications Committee for the International Association of Impact Assessment, and is a founding member of the Society for Practitioners of Health Impact Assessment.  She also co-authored the textbook Health Impact Assessment in the United States, which was published by Springer in 2014. Marla holds an M.Sc. in Epidemiology from the University of Edinburgh.


Murray Lee is the co-founder of Habitat.  A practicing physician and a Clinical Assistant Professor in the Department of Community Health Sciences at the University of Calgary, Murray works primarily with Aboriginal populations in Nunavut and other northern locations across Canada and the U.S. Murray has made a career out of studying how “place” affects health and advises on Habitat’s HIAs and other population health projects. Murray received his medical degree from the University of Calgary and holds an M.P.H. from the University of California, Berkeley.



Erica Westwood is an experienced public health and social science researcher and has consulted with governments, industries and communities to help promote health and wellbeing. Her previous experience includes global health and development research, primarily in Guatemala and Tanzania where she was involved in community health programming. Since joining Habitat, Erica has worked on health and quality of life issues related to resource development.  Her work has promoted community health within the context of extractive and major infrastructure projects.  Among her interests are outbreak preparedness, stakeholder engagement, community development and technological innovation.  Erica holds a BHSc in Health and Society from the University of Calgary and an MSc in Global Health from McMaster University.  She is a member of the Society of Practitioners of Health Impact Assessment (SOPHIA) as well as the Canadian Coalition for Global Health Research (CCGHR).  


Katie Hirono is a PhD candidate in the Global Public Health Unit at the University of Edinburgh.  Her research focuses on the role of participatory engagement in citizens' juries and health impact assessment for improving policy-making and health equity. She is also President of SOPHIA - the Society of Practitioners of Health Impact Assessment, an organization dedicated to providing leadership and promoting excellence in the field of HIA. Katie is a former research associate at the Centre for Health Equity Training, Research and Evaluation at the University of New South Wales (Australia) where she specialized in conducting, training and teaching HIA.  She has contributed to 30 HIAs throughout her career. Before joining CHETRE, Katie worked at the Health Impact Project, a collaboration of the Pew Charitable Trusts and the Robert Wood Johnson Foundation, to increase the use of HIA in the United States.  She has also worked as a consultant to the Pan American Health Organization / World Health Organization in the department of Gender, Diversity and Human Rights.