Dr. Pichai Kittipanyaworakul is a gastroenterologist and hepatologist at Navamin 9 Hospital in Bangkok. He earned his medical degree from Chiang Mai University. Dr. Kittipanyaworakul holds a diploma in gastroenterology and hepatology from Mahidol University, a top-tier Thai institution. He works at a JCI-accredited facility that treats 30,000 patients every year.
Dr. Watcharin Wichapolchaiyakul is a board-certified gastroenterologist and internal medicine specialist at Siriraj Hospital, Mahidol University in Bangkok. He completed a gastroenterology fellowship and internal medicine board training at Siriraj. He received his MD from the Faculty of Medicine Siriraj Hospital. He graduated with First Class Honors (GPA 3.90).
His clinical expertise includes Helicobacter pylori infection, gastric mucosal disorders, and drug-induced liver injury. He has presented research at Digestive Disease Week in Chicago. His work covers gastric microbiota in CagA-positive and CagA-negative H. pylori. It also includes gene-guided N-acetylcysteine for prevention of anti-tuberculous drug-induced hepatitis. He is a member of GAT, the AGA Institute, the Medical Council of Thailand, and RCPT.
Dr. Premkamol Patraithikul is a general surgeon with advanced training in minimally invasive techniques. Dr. Patraithikul earned an M.D. from Khon Kaen University. Dr. Patraithikul completed a residency in general surgery at Thammasat University. Dr. Patraithikul completed a fellowship in laparoscopic surgery at Mahidol University (Siriraj Hospital) in Thailand.
Clinical expertise includes laparoscopic and robotic surgery. Practice also covers general surgery, obesity and weight‑management surgery, and surgery for gastrointestinal conditions.