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Prairie Heart Institute at St. John's Hospital is the largest heart program in Illinois. We perform more cardiovascular procedures than any other hospital in the state ... including the Chicago area. Research shows that the more procedures a facility performs, the safer it is for the patient. We also have developed reputation a as one of the premier cardiovascular programs in the country, but it's our dedication to providing superior quality of care and compassion to patients and their families that makes us unique.Many of our cardiologists are members of Prairie Cardiovascular Consultants Ltd. -- a highly trained, experienced, and skilled group of cardiologists who came to Prairie Heart Institute from all around the country. Our cardiac surgeons include those from the Southern Illinois University School of Medicine's Division of Cardiothoracic Surgery. Prairie Education and Research Cooperative (PERC) Prairie Education and Research Cooperative is a not-for-profit organization committed to providing research participants with potentially cutting-edge treatments for their cardiovascular disease.