Dr. Ooi Wei Keat is a distinguished Consultant General and Upper Gastrointestinal Surgeon at Gleneagles Hospital Kota Kinabalu, renowned for his expertise in Esophageal and Gastric Cancer Surgery and Reflux diseases. He is a pioneer, being the first Malaysian fellow to complete subspecialty training in Upper GI Surgery at Erasmus University Medical Centre, Rotterdam. With a strong foundation in basic and advanced endoscopic and laparoscopic surgery, Dr. Ooi previously led the Upper GI Surgery service in Sabah for six years, demonstrating significant leadership and commitment to public healthcare. His dedication to surgical innovation and excellence is further evidenced by his academic contributions and active involvement in clinical research.