Founded in 1945, Ferrell-Duncan Clinic employs more than 100 physicians. It offers services in various fields, such as cardiology, dermatology, gastroenterology, internal medicine, nephrology, orthopaedic surgery and pulmonology. The clinic also employs over 120 nurses. Located in Springfield, Mo., the clinic s facility is spread over an area of more than 180,000 square feet. The clinic is also approved by the Joint Commission on Accreditation of Healthcare Organizations. Its ancillary services include mammography, ultrasonography, computed tomography and auditory brainstorm response testing. Ferrell-Duncan Clinic also operates various satellite clinics in Missouri. Additionally, it maintains a Web site that features employment opportunities and contact details.