Dr. Cohen serves as Vice President of Statistical and Data Sciences at RTI International. He directs the efforts of an experienced staff of over 100 statisticians, biostatisticians, data scientists and methodologists engaged in programs that include education, international, social, health and behavioral statistics; data science; statistical methodology and data analytics. Dr. Cohen has authored over 150 journal articles and publications in the areas of biostatistics, survey research methodology, estimation, survey design and health services research. He is co-author of the text, Methodological Issues for Health Care Surveys. In his prior position, he was the Director of the Center for Financing, Access and Cost Trends at the Agency for Healthcare Research and Quality. In this capacity, he led the Center's administration of surveys and development of large primary data sets, including the MEPS, to support health care policy and behavioral research and analyses. He has also served as an Associate Professor at the Johns Hopkins University and at the George Washington University. He is also a Fellow of the American Statistical Association and an Elected member of the International Statistical Institute. He received his Ph.D. in Biostatistics from the University of North Carolina at Chapel Hill.