Jack McCallum, MD, PhD is the founder and former CEO of CenseoHealth, LLC. Prior to founding Censeo, Dr. McCallum was the founder, President and Chief Medical Officer of one of the first companies to apply clinically based algorithms to Medicare risk adjustment. Previously Dr. McCallum was a founding member of North Texas Specialty Physicians, a multi-specialty, risk-taking provider group that serves over 30,000 members in the Dallas/Ft. Worth area. Dr. McCallum practiced adult and pediatric neurosurgery in Fort Worth for almost thirty years, while also serving as head of the medical staff at Fort Worth Children's Hospital. Dr. McCallum earned a doctorate in History from Texas Christian University (TCU) and is currently a Professor of the History of Science at TCU. Dr. McCallum has written a number of books and articles and given numerous presentations on healthcare policy and medical history.