Dr. Zelko graduated from the University of Hawaii at Manoa and later completed his residency at the University of Colorado at Denver, CO. He focuses on Anterior Spine Exposure Surgery, Hernia Repair and other procedures at The Oregon Clinic - Gastrointestinal and Minimally Invasive Surgery (GMIS). Dr. Zelko is the Clinical Professor for the Department of Surgery at Oregon Health & Science University (OHSU) and a member of the American College of Phlebotomy.