St. John's Health System

St. John's Health System, now operating as Mercy Springfield Communities, is a prominent integrated healthcare delivery network based in Springfield, Missouri. Originally founded in 1891 by the Sisters of Mercy, the system grew into a multi-hospital regional powerhouse serving southwest Missouri and northern Arkansas before rebranding to Mercy in 2012. The organization is recognized for its leadership in clinical quality and was a top-performing site in the CMS Physician Group Practice Demonstration, particularly in the management of chronic conditions like diabetes and heart failure. Through its affiliate, Cancer Research for the Ozarks, the system serves as a major hub for National Cancer Institute-sponsored clinical trials, providing patients with access to cutting-edge oncology treatments. Today, it remains a cornerstone of the Mercy health ministry, offering comprehensive medical services across a vast network of hospitals, clinics, and specialized care centers.