John M. Flack, MD, MPH, FAHA, FASH, MACP, is a well-versed internist and clinical hypertension specialist who diagnoses and treats patients as Director of the Hypertension Clinic through the Department of Internal Medicine at Southern Illinois University School of Medicine in Springfield, IL. Furthermore, Dr. Flack is member of the AHA Research Strategic Outcomes Committee, the Psychosocial Risk and Disease Prevention NIH Study Section, and the Environmental Health Sciences Review Committee. He is the Vice President of the American Society of Hypertension (ASH) Specialist Board. Dr. Flack has an impressive professional journey that spans thirty-three years and his expertise covers areas such as diagnosis and treatment of secondary forms of hypertension, difficult to control (resistant) hypertension, and hypertension in African Americans. Dr. Flack has published over 150 peer-reviewed manuscripts, editorials, and book chapters in the areas of hypertension therapeutics, salt and blood pressure, and cardiorenal epidemiology. He is a manuscript reviewer and serves on the editorial boards for peer-reviewed medical journals. For more information about Dr. John M. Flack, please visit https://www.siumed.edu/im/faculty/john-m-flack.html.