Dr. William Johnson is a cardiac and thoracic surgeon from Mobile, Alabama who is affiliated with many hospitals in the area, including Mobile Infirmary Medical Center and Providence Hospital. He got his medical degree from the University of Alabama School of Medicine and had been in the working field for more than 20 years. He also did a residency program in general surgery at the University of Texas Health Science Center and then he completed his fellowship in thoracic surgery at Texas Heart Institute.