Background
Dr Calvin Koh (Koh Jianyi Calvin) is a specialist gastroenterologist and hepatologist in Singapore. He practises with The Gastroenterology Group and holds academic and clinical appointments at the National University of Singapore and National University Hospital.
Dr Koh graduated with a Bachelor of Medicine, Bachelor of Surgery (MBBS) from the National University of Singapore. He completed his internal medicine training at National University Hospital, where he served as Chief Resident in the Department of Medicine. His specialist accreditation was granted by the Specialist Accreditation Board of Singapore.
He is a Fellow of the Academy of Medicine Singapore and holds fellowships from the Royal College of Physicians (London) and the American Society for Gastrointestinal Endoscopy. Dr Koh is an adjunct assistant professor at the National University of Singapore and a visiting consultant at National University Hospital and Alexandra Hospital.
He is a co-author of clinical guidelines for the Academy of Medicine Singapore on endoscopic sedation and gastric premalignant lesions. He has authored over 80 academic publications and serves on the Gastroenterology Exit Examination committee.
Training & Fellowship
2020
Fellow of the Royal College of Physician, London
Fellow of the American Society for Gastrointestinal Endoscopy
2018
Advanced Endoscopy Fellowship completed under the American Society for Gastrointestinal Endoscopy at the University of Florida.
2015
FAMS (Gastroenterology) from the Academy of Medicine, Singapore.
Specialist Accreditation in Gastroenterology from the Specialist Accreditation Board of Singapore.
2012
MMed (Internal Medicine) from the National University of Singapore.
2011
MRCP (UK) from the Royal College of Physicians, United Kingdom.
Professional Appointments
Dr Calvin Koh holds academic and clinical appointments at the following institutions in Singapore.
Adjunct Assistant Professor
Department of Medicine, National University of Singapore
Visiting Consultant
National University Hospital and Alexandra Hospital
Vice Chairman
Chapter of Gastroenterology, Academy of Medicine Singapore
Academic Publications
Selected contributions to the medical literature and clinical guidelines.
Academy of Medicine Singapore Guidelines
Co-author of clinical guidelines on endoscopic sedation and gastric premalignant lesions, providing evidence-based recommendations for Singaporean practice.
Advanced Endoscopy Fellowship
Completed an advanced endoscopy fellowship under the American Society for Gastrointestinal Endoscopy at the University of Florida.
Over 80 Academic Publications
Extensive scholarly output in gastroenterology and hepatology, contributing to the global understanding of digestive health and liver disease.