Benjamin J. Chastek MD

Mr. Chastek joined Optum in 2004 and specializes in retrospective and prospective studies of health economics and outcomes. As the Immunology Therapeutic Lead, he oversees research, data acquisitions, and study execution in this disease area. He specializes in health economics, econometrics, and health outcomes, with a particular interest in retrospective claims-based research studies. Since 2008 Mr. Chastek has focused on research related to rheumatoid arthritis, psoriasis, psoriatic arthritis, and other autoimmune disorders. Mr. Chastek has a MS degree in statistics from Minnesota State University, where he specialized in theoretical and computational statistics. Prior to becoming a therapeutic lead, Mr. Chastek was a researcher and statistician within Optum with a specific expertise in experimental design for and statistical analysis of large administrative claims datasets.