"Lawton internist Brian Birdwell, M.D. is owner and physician-director of the MainSt. Clinic team of professionals. A lifelong Oklahoman, Dr. Birdwell earned his bachelor of arts degree from Yale University, spent a year at the first hospice in the United States, and then completed his medical degree and Internal Medicine residency at the University of Oklahoma Health Sciences Center. Later training included clinical epidemiology at the Uniformed Services University in Bethesda, Maryland, and a vascular medicine fellowship at the University of Oklahoma. Birdwell served six years as a medical doctor in the U.S. Army. Board Certified in Internal Medicine, Dr. Birdwell has worked in private practice in Lawton since 2001. He has more than 20 years of experience in occupational medicine. He served as medical director for McBride Occupational Medicine in Oklahoma City and 11 years as medical director and plant physician for Goodyear Tire and Rubber Co. in Lawton, Oklahoma."