Biography & Education


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 also a member of the American College of Phlebology.

Areas of expertise

Hernia Surgery - Open and Laparoscopic, Gallbladder Surgery, Sports Hernia, Varicose Vein Treatment, Acute Care Surgery

  • B.S., University of Hawaii, Hilo, HI, 1971-1974
  • M.D., University of Hawaii, Manoa, HI, 1974-1978
  • Residency, University of Colorado, Denver, CO, 1978-1983
  • English

Care Locations

The Oregon Clinic-Gastrointestinal & Minimally Invasive Surgery
4805 NE Glisan St.
Suite 6N60
Portland , OR 97213
The Oregon Clinic-Vein Treatment East at Gastrointestinal & Minimally Invasive Surgery
4805 NE Glisan Street Suite 6N60
Portland , OR 97213
Fax 503-416-7377


Board Certifications
  • Surgery - general