1. Chairman, Department of Anesthesiology, Illinois Masonic Medical Center, Clinical Professor of Anesthesiology, University of Illinois College of Medicine.
2. Research Assistant, Department of Anesthesiology, Illinois Masonic Medical Center.
3. Attending Anesthesiologist, Illinois Masonic Medical Center, Clinical Associate Professor of Anesthesiology, University of Illinois College of Medicine.
4. Attending Anesthesiologist, Saint Joseph Hospital.
5. Attending Radiologist, Illinois Masonic Medical Center, Clinical Assistant Professor, University of Illinois College of Medicine (now deceased).