St. John's Mercy Medical Center is a leader in patient care, medical education and research. As one of the nation's largest Catholic hospitals and the second largest private hospital in metropolitan St. Louis, St. John's Mercy Medical Center operates the only Level I Trauma Center and Level III Neonatal Intensive Care Unit in St. Louis County. The Medical Center serves as the community hospital for patients with a variety of conditions and health needs. As a teaching and research hospital, St. John's Mercy utilizes innovative technology and draws health care professionals from across the nation who practice in nearly every clinical specialty.