John M. Flack, M.D., M.P.H., F.A.H.A., M.A.C.P., an Alpha Omega Alpha (AOA) graduate of the University of Oklahoma School of Medicine, is the Sergio Rabinovich Endowed Chair of Internal Medicine and the Professor and Chair of the Department of Medicine at Southern Illinois University School of Medicine. He is also Chief of the Hypertension Section as well. He is a board- certified Internal Medicine specialist and an internationally renowned hypertension specialist/cardiovascular epidemiologist with widely recognized clinical/research expertise in hypertension in African Americans, resistant/refractory hypertension, device-based therapies for hypertension and racial cardiovascular health disparities. Dr. Flack is the current President of the American Hypertension Specialist Certification Program. He has published over 210 peer-reviewed manuscripts and book chapters and is an Associate Editor for the American Journal of Hypertension. He maintains an active clinical practice in complex hypertension at SIU where he teaches and mentors medical students and residents and undertakes innovative, cutting edge research. Dr. Flack has received numerous awards including the Distinguished Research Award (1993) from the International Society on Hypertension in Blacks (ISHIB), the Daniel D. Savage Memorial Scientific Award (1998) from the Association of Black Cardiologist (ABC), the F. Dewey Dodrill Award for Excellence (2007) from the American Heart Association (AHA), the Detroit News Michiganian of the Year (2009), and the University of Oklahoma Academic Physician of the Year (2012). Also, he has been repeatedly named to Top Doctor, Best Doctor, and Super Doctor lists. Previously, he served a stint as a voting member of the FDA Cardio-Renal Advisory Board. Dr. Flack was recently conferred the status of Master by the American College of Physicians (ACP); he also is a current member of the ACP Board of Regents.