image: Jag Chhatwal

Director, Institute for Technology Assessment at
Massachusetts General Hospital

and Associate Prof., Harvard Medical School

Dr. Chhatwal's research is centered in decision science, data analytics, outcomes research and health economics. Dr. Chhatwal has over 12 years of experience in developing mathematical models to inform health policy. For the last several years, he has worked in the area of developing decision-analytic models in liver diseases to inform clinical decisions and health policies. Dr. Chhatwal has collaborated with the Department of Health and Human Services and the World Health Organization (WHO) to policies leading to hepatitis C elimination in the United States and elsewhere. In partnership with the WHO, his groups recently developed an interactive modeling tool, the Hep C Calculator, that allows policymakers from 28 countries to evaluate the cost-effectiveness of hepatitis C treatment in those countries. Dr. Chhatwal’s work has been featured in leading media such as The Wall Street Journal, Forbes, and National Public Radio. He currently serves as a cost-effectiveness and decision analysis editor of Clinical Gastroenterology and Hepatology and is also an editorial board member of Medical Decision Making.


Image: Rohit Loomba, MD, MHSc

Director, NAFLD Research Center, 
University of California at San Diego

Dr. Loomba is Professor of Medicine (with tenure) in the Division of Gastroenterology, and Adjunct Professor in the Division of Epidemiology at University of California, San Diego. He is a leading expert in translational research and innovative clinical trial design in NAFLD and NASH. Dr. Loomba is the founding director of the UCSD NAFLD Translational Research Unit where his team is conducting cutting edge research in all aspects of NAFLD including non-invasive biomarkers, genetics, epidemiology, clinical trial design, imaging end-points, and integrated OMICs using microbiome, metabolome and lipidome. He follows one of the largest cohorts of well-characterized patients with NAFLD and applies evidence-based medicine to answer clinically relevant questions to improve management of patients with chronic liver disease. Dr. Loomba is an elected member of the board of directors of the American Liver Foundation. He serves as the co-chair of the Research Award Panel for the American Liver Foundation. In addition, he serves on various committees of the American Association for the Study of Liver Diseases (AASLD). He serves on the editorial board of several leading journals, and is the Associate Editor for Alimentary Pharmacology and Therapeutics, a leading journal in the field of Gastroenterology.

image: Emily Bethea

Associate Clinical Director of Liver Transplantation
at Massachusetts General Hospital

Dr. Bethea completed Gastroenterology and Hepatology fellowship followed by an Advanced Transplant Hepatology fellowship at Massachusetts General Hospital. She remains active in numerous societies and organizations, including the MGH Institute for Technology Assessment where she continues to apply simulation modeling and decision analytic methods to answer clinical questions and improve resource optimization in the areas of viral hepatitis, non-alcoholic fatty liver disease, and organ transplantation.


Image: Kathleen Corey, MD, MPH

Director, MGH Fatty Liver Clinic, Gastroenterology Unit at Massachusetts General Hospital

Kathleen E Corey, MD, MPH, MMSc is an Assistant Professor of Medicine at Harvard Medical School. Dr. Corey's clinical interests include all areas of hepatology. Dr. Corey's research focuses on non-alcoholic fatty liver disease and the development of non-invasive biomarkers for the diagnosis and monitoring of NAFLD.  Dr. Corey has lectured regionally and nationally on NAFLD


Former Postdoctoral Fellow
Harvard Medical School

Dr. Chen received her PhD in Interdisciplinary Statistics and Operations Research from the University of North Carolina at Chapel Hill, and an MS in Operations Research from Columbia University, New York. She obtained her BS in Electrical Engineering from the Southeastern University in Nanjing, China. With an innate interest in math, Dr. Chen was wheeled back to the major of Operations Research after stumbling across a class in Stochastic Modeling at Columbia University. Her graduate research was centered around applying statistical analysis, Queueing Theory, and simulation techniques to streamline patient flows in emergency departments. She has always enjoyed working in the healthcare management industry, where she cooperates with professionals with various technical backgrounds to combine group wisdom into advancing innovative healthcare operations and cost-effective healthcare policies. At the ITA, she worked with Dr. Jagpreet Chhatwal on the development of non-alcoholic fatty liver disease (NAFLD) progression model.


image: Sumeyye K. Samur

Former Postdoctoral Fellow
Harvard Medical School

Dr. Samur was a postdoc fellow at Harvard Medical School and Massachusetts General Hospital (MGH), Institute for Technology Assessment. During her research, she mainly worked in liver diseases including hepatitis C virus, nonalcoholic fatty liver, and liver transplant. She has authored/co-authored over 30 publications including papers, proceedings, and abstracts. Her research has been featured in the media more than 20 times, including in press releases and interviews. In June 2018, The Massachusetts State House of Representatives honored Dr. Samur for her outstanding contribution to the study of health care and the future of medicine in the US. Dr. Samur holds a PhD degree in Industrial Engineering from Marmara University, Turkey.


image: Ozden Onur Dalgic

Former Postdoctoral Fellow
Harvard Medical School

Ozden Onur Dalgic was a postdoctoral fellow at MGH-ITA. His research focuses on data analytics, agent-based simulation, stochastic programming, Markov models and decision processes, infectious disease modeling, and natural history models. Ozden is currently working with Jagpreet Chhatwal, PhD. He is also a Research Collaborator at Neurology Department, Mayo Clinic, Rochester, MN.


image: M. A. Ladd

Systems Manager, MGH
Institute for Technology Assessment

M. A. maintains the informational website for the NAFLD Simulator and several other sites. She has over 25 years of experience in website development and system administration.


image: Tiannan (Tia) Zhan, MS

Former Research Associate, MGH
Institute for Technology Assessment

Tia used her graphical skills to design infographics for the NAFLD Simulator. Her interests include health policy, decision analysis, cost-effectiveness analysis and outcomes research.

Former Data Analysist

Institute for Technology Assessment

Asmae Toumi holds a Bachelor of Science in the Life Sciences from McGill University, where she also pursued clinical and basic science research. She is a past recipient of an American Physiological Society Undergraduate Research Fellowship. At the ITA, she worked on health outcomes research under Dr. Jag Chhatwal and Dr. Carrie Lubitz. She is passionate about data science, healthcare optimization, and sports analytics.


Jagpreet Chhatwal, PhD
MGH Inst. for Tech. Assessment
Harvard Medical School
101 Merrimac St. STE 1010
Boston, MA 02114 United States


American Association for the Study of Liver Diseases logoThis work is supported by the American Association for the Study of Liver Diseases Innovation Fund

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