Dr Watcharin — Bangkok
- Specialisation: Gastroenterologist
- 9 years of experience
- Speaks:English, Thai
- Workplace: Thailand, Bangkok, PMG Hospital
- Member of the American Gastroenterological Association (AGA) Institute and presenter at Digestive Disease Week (DDW).
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.
Doctor's services
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Qualifications
Specializations & Focus Areas
Internal Medicine
Gastroenterology & Hepatology
Gastric Microbiota & Helicobacter pylori Studies
Education & Training
Fellowship in Gastroenterology | Siriraj Hospital, Mahidol University (2023–2025)
Residency in Internal Medicine | Siriraj Hospital, Mahidol University (2020–2023)
Doctor of Medicine (M.D.) | Faculty of Medicine Siriraj Hospital, Mahidol University (2011–2017)
Honors: First Class Honors (GPA 3.90)
Professional Memberships
The Medical Council of Thailand
The Royal College of Physicians of Thailand (RCPT)
The Gastroenterological Association of Thailand (GAT)
The American Gastroenterological Association (AGA) Institute
Selected Publications & Research Presentations
Differences in gastric microbiota in patients who were infected between CagA positive and negative Helicobacter pylori
Abstract Presentation, Digestive Disease Week (DDW), Chicago, IL, USA (May 2026)
Gene-guided N-acetylcysteine for prophylaxis of anti-tuberculous drug-induced hepatitis: A randomized controlled trial
Abstract Presentation, Digestive Disease Week (DDW), Chicago, IL, USA (May 2026)
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