The Department of Medicine is the largest and most complex clinical department at Michael Reese Hospital and Medical Center. Members are involved in clinical care, education and research. Providing a strong foundation for clinical care and education continues to be the focus of research activities in the Department of Medicine. These have also led to numerous significant advances in medicine. Dr. Louis Katz, the Medical Research Institute's first full-time investigator and former president of the American Heart Association, was one of the first to explore the relation of coronary heart disease to cholesterol concentration in the blood. Cardiovascular Institute researchers, Dr. Alfred Pick and Dr. Richard Langendorf, perfected the use of the electrocardiograph. Dr. Leonidas Berry was a pioneer in the development and use of the gastroscope. Dr. Samuel Soskin and Dr. Rachmiel Levine made important discoveries about the "gatekeeper" action in insulin, which is of fundamental importance to the understanding of diabetes. Dr. Albert Milzer and his research team were the first to kill polio virus and make an effective vaccine against this debilitating virus.	MICHAEL REESE HOSPITAL AND MEDICAL CENTER 2929 S. Ellis Avenue Chicago, IL 60616 Main telephone: 312-791-2000 Enrique Beckmann, M.D. - Chairman & CEO NUMBER OF: Physicians: 575 Employees: 1,100 Beds - 450