Dr. Fixley has a special interest in sleep medicine and its application and association with congestive heart failure and coronary artery disease. He also has a special interest in Intensive Care Medicine. He was an assistant professor at the Kansas Medical Center from 1977-1980. He is also an Associate Clinical Professor of Medicine, Oklahoma City Health Sciences Center from 1981 to present. He serves as the Medical Director of Sleep Clinic Respiratory Therapy at Oklahoma Heart Hospital.
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