Our Team

Berry Consultants employs world renowned experts in Bayesian statistics and clinical trial strategy, and strives to set the standard for innovative clinical trial design, analysis, and implementation.   Meet our growing team.

Roger Lewis, M.D., Ph.D. / Senior Medical Scientist

Roger J. Lewis, MD, PhD, is the Senior Medical Scientist for Berry Consultants. He received his PhD in Biophysics in 1986 and his MD in 1987 from Stanford University. He completed clinical training in emergency medicine in 1990 and is currently a Professor at the David Geffen School of Medicine at UCLA and Chair of the Department of Emergency Medicine at Harbor-UCLA Medical Center. Dr. Lewis’s expertise centers on clinical research methodology, including adaptive and Bayesian trial design, and he participates in the design and analysis of numerous laboratory, clinical, and health services research studies. His areas of interest include adaptive and Bayesian clinical trials; platform trials; translational, clinical, health services and outcomes research; emergency department crowding and disaster preparedness, interim data analysis; the role and function of data monitoring committees; and difficulties surrounding informed consent in emergency research studies. Dr. Lewis has served as a research mentor for numerous fellows and junior faculty and frequently lectures on the topics of clinical research design and the statistical analysis of clinical trials.

In 2009, Dr. Lewis was elected to membership in the National Academy of Medicine (formally the Institute of Medicine) of the National Academies. He is a Past President of the Society for Academic Emergency Medicine (SAEM) and is a member of the Board of Directors of the Society for Clinical Trials.

Dr. Lewis has served as a grant reviewer for the Agency for Healthcare Research and Quality (AHRQ), the Canadian Institutes of Health Research (CIHR), the Centers for Disease Control and Prevention (CDC), the National Cancer Institute of France, the National Institutes of Health (NIH), the Patient-Centered Outcomes Research Institute (PCORI) and foundations.  He is a former member of the Medicare Evidence Development & Coverage Advisory Committee of the Centers for Medicare & Medicaid Services.  Dr. Lewis serves as the chair of data and safety monitoring boards (DSMB) for both federally-funded and industry-sponsored clinical trials.  He is a statistical reviewer for JAMA and a co-editor of the JAMA section entitled "JAMA Guide to Statistics and Methods".  Dr. Lewis has authored or coauthored approximately 250 original research publications, reviews, editorials, and chapters.  He has served as a principal investigator or coinvestigator on numerous research projects funded by a variety of international, federal, state, foundation, and commercial sources.