William M. Tierney, Regenstrief Institute (IMAGE) Indiana University Caption William M. Tierney, M.D. is president and CEO of the Regenstrief Institute, associate dean for clinical effectiveness research at the Indiana University School of Medicine, chief of medicine for Wishard-Eskenazi Health, and a practicing physician. Credit Regenstrief Institute Usage Restrictions Photo credit to Regenstrief Institute License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.