Leslie S. Zun, M.D., M.B.A. is the Professor, Department of Emergency Medicine with a secondary appointment in the Department of Psychiatry at the Rosalind Franklin University of Medicine and Science/Chicago Medical School in North Chicago, Illinois. background includes a medical degree (M.D.) from Rush Medical College and a business degree (M.B.A.) from Northwestern University’s School of Management. Currently, he is Chief Medical Officer for Hamdard Health Alliance in Chicago. He has presented his research and lectured on emergency medicine and acute psychiatric topics both nationally and internationally. He is past President of the American Association for Emergency Psychiatry, prior board member of American Academy of Emergency Medicine and past chair of the Coalition for Psychiatric Emergencies. He is the chief editor of the first and second editions of the Behavioral Emergencies for Healthcare Providers textbook and course director for the National Update on Behavioral Emergencies conference for the past 15 years.