Senior Staff

Dominik D. Alexander – Principal Epidemiologist
Dr. Alexander, PhD, MSPH, has extensive experience in health research methodology, meta-analysis, and disease causation, particularly in the conceptualization, design, analysis, and interpretation of epidemiologic studies. He has published on a diverse range of topics and types of studies, including original epidemiologic research, qualitative reviews, systematic weight-of-evidence assessments, and quantitative meta-analyses. Because of his expertise in research methodology, Dr. Alexander has served as principal investigator on numerous projects involving a wide variety of exposures and health outcomes. His research areas include: occupational and environmental exposures, such as asbestos, benzene, trichloroethylene, solvents, pesticides, arsenic, and dioxin; community health studies and cluster investigations involving air, water, and soil exposures; clinical, pharmacoepidemiology, and medical device studies including clinical trial design and support. In addition, Dr. Alexander has extensive experience in nutritional epidemiology and has conducted systematic reviews and meta-analyses of dietary and nutritional factors and cancer, cardiovascular disease, type 2 diabetes, hypertension, and body composition. His work in this area has involved studies of dietary patterns, intake of whole foods, and dietary supplements, such as meat and fat intake, dairy and egg consumption, breakfast eating, multivitamin and mineral supplements, fish oil, caffeine, and infant formula.

Dr. Alexander has over 180 peer-reviewed manuscripts, professional presentations, abstracts, and book chapters. He frequently presents on the understanding and interpretation of epidemiologic evidence in a variety of professional venues, such as national conventions, scientific conferences, and governmental regulatory forums. Dr. Alexander serves on the editorial board of the American Journal of Clinical Nutrition. In addition, he regularly serves on scientific committees and scientific advisory meetings. Dr. Alexander was awarded a National Cancer Institute Fellowship for Cancer Prevention and Control and was the 2010 recipient of the UAB School of Public Health alumnus award for scientific excellence, based on recognition of his “significant scientific contributions through demonstrated commitment and exemplary leadership in empirical research, research methodology, or theory building or adaptation.” Dr. Alexander is a Visiting Professor of Epidemiology at the University of Copenhagen in Copenhagen, Denmark.
Email Dominik Alexander
direct: +1.630.390.8190
Dr. Alexander’s CV dated November 2016

Sarah S. Cohen – Senior Epidemiologist
Dr. Cohen, PhD, MS, received her PhD in Cancer Epidemiology from the University of North Carolina at Chapel Hill and has 15 years of experience in the design and conduct of epidemiological studies. Her expertise includes the areas of cancer, obesity, occupational health, radiation health effects, and pharmacoepidemiology. Dr. Cohen has published numerous papers examining behavioral and genetic determinants of cancer and metabolic-related conditions such as obesity and diabetes, racial disparities in cancer, biomarkers of cancer and obesity, and cancer screening patterns. As a result of her expertise in the area of obesity epidemiology, she was inducted as a Fellow of The Obesity Society in 2012. She has also collaborated on multiple studies of worker health among radiation-exposed workers as well as occupational cohort studies of aerospace workers, welders, motion picture film processing workers, and chemical manufacturers. In addition to her epidemiology training, Dr. Cohen received a BS and MS in biostatistics and brings a strong set of analytic skills to the EpidStat team. Dr. Cohen’s publications have appeared in journals such as the Journal of the National Cancer Institute, American Journal of Epidemiology, Cancer, Obesity, and the Journal of Occupational and Environment Medicine. She serves as a scientific reviewer for many journals including American Journal of Epidemiology; Cancer Epidemiology, Biomarkers, and Prevention; Clinical Endocrinology; Obesity; PLoS One; and Preventive Medicine. Dr. Cohen is currently Adjunct Assistant Research Professor of Medicine in the Division of Epidemiology within the Department of Medicine at the Vanderbilt University School of Medicine.
Email Sarah Cohen
direct: +1.919.530.8302

Bob Nordyke – Principal Economist
Dr. Nordyke, PhD, MS, brings over 25 years of project and organizational leadership, health economics, outcomes research, and health policy experience to this project. Over the last 15 years, Bob has focused on the global pharmaceutical industry, gaining roles of increasing impact in health economics consulting and in pharmaceutical industry. In addition to his role at EpidStat, Bob is currently an adjunct professor at the UCLA Fielding School of Public Health in the Dept. of Health Policy and Management and is also a senior researcher at the UCLA Center for Health Policy Research.

Before establishing the health economics practices at ICON/PriceSpective and more recently at Precision for Medicine, Bob was part of Amgen’s Global Health Economics team. At Amgen he served as the therapeutic area head for inflammation, the global payer lead and global health economics lead in oncology supportive care, and was the program lead for an EMR-based registry capability for Amgen’s entire oncology portfolio. Prior to Amgen, Bob was the director of outcomes research at Cerner LifeSciences and a research fellow at the RAND Corporation. Bob received his BS in engineering from Rose-Hulman Institute of Technology, an MS in engineering from the University of Texas-Austin, and a PhD in Public Policy Analysis (Health Policy) from the RAND Graduate School.
Email Bob Nordyke