From the website:
Dr. John Jackson, D.O. earned his medical degree from Chicago College of Osteopathic Medicine. He completed both his internship and his residency training in orthopedic surgery at WBAMC in El Paso. Dr. Jackson previously served in the United States Army, Hospital in Stuttgart Germany, and at Soto Cano Air Base in Honduras. He specializes in Anterior and Posterior Approach Hip Replacements, total knee replacements and revision surgery. Active Duty Military Service 1975-1993