Dr. O’Donnell is currently on the faculty at Eskenazi hospital. He completed his Emergency Medicine Residency at Indiana University in 2007 and EMS fellowship in 2008. In June 2019, Dr. O'Donnell was appointed Chief of Indianapolis Emergency Medical Services. Previously Dr. O'Donnell served as the Medical Director for Indianapolis Emergency Medical Services (IEMS) and the Indianapolis Fire Department (IFD), Dr. O'Donnell also serves as the Medical Director for the Indianapolis Metropolitan Police S.W.A.T. team Additionally, Dr. O'Donnell is the Chief of the Division of EMS as well as the fellowship director for the IUSOM EMS Fellowship.