Missouri Cardiothoracic Surgery expert witnesses draw on experience from major centers like Barnes-Jewish, MU Health Care, and St. Luke’s, treating complex cardiac and thoracic disease in urban and rural populations. They often specialize in coronary bypass, valve repair, aortic surgery, thoracic oncology, transplant, and minimally invasive techniques. Many practice in academic, tertiary, and VA settings shaped by Missouri’s aging, high‑risk cardiovascular population. They commonly evaluate standards of care, surgical indications, perioperative management, complications, and long-term cardiothoracic outcomes.