David Pryor, MD. Executive Vice President and Chief Clinical Officer of Ascension (St. Louis). Dr. Pryor has been part of Ascension more than a decade and previously served as president and CEO of Ascension Clinical Holdings and CMO of Ascension Health. His other prior administrative roles include senior vice president and CIO of Allina Health System in Minneapolis, president of New England Medical Center Hospitals in Boston and various positions at Duke University Medical Center in Durham, N.C. Dr. Pryor serves as a consulting associate professor of medicine at Duke University Medical Center.