Based in Springfield, Mo., Ferrell-Duncan Clinic is a physician-owned clinic, with more than 100 physicians representing over 20 specialties. The clinic specializes in allergy and immunology, cardiology, neurology, obstetrics and gynecology and orthopedic/plastic surgery, among others. It also holds expertise in offering colon and rectal, pulmonology, dermatology, family medicine, gastroenterology, rheumatology, urology, vascular and general surgery, nephrology, and more. Ferrell-Duncan Clinic is an affiliate of CoxHealth, which has attained recognition as a level three Physician Practice Connections-Patient Centered Medical Home by the National Committee for Quality Assurance in 2010.