Our new center achieves Dr. Don R. Johnson’s vision to offer patients the very best in spine health expertise, technology and procedures. The Southeastern Spine Institute physician staff includes spine surgeons, neurosurgeons, sports medicine orthopedic specialists, non-surgical rehab doctors and pain management specialists. At the Southeastern Spine Institute (SSI), we offer a full range of services to help stop your neck, back or leg pain and get you back to your normal day-to-day activities.