Brad Hammill is Associate Professor in the Department of Population Health Sciences and faculty at the Duke Clinical Research Institute at Duke University. His primary expertise and experience is in outcomes research and observational data analysis. He has used administrative data, including Medicare claims, extensively for many different types of research, including comparative effectiveness studies, cost analysis studies, and incidence/prevalence studies. With his strong background in complex statistical programming, he has also implemented a method to link these administrative data to clinical registry data.