Doctor's Profile

Professional Qualifications
MBBS (Singapore), M Med (Internal Medicine), MRCP (UK), FRCP (London), FAMS (Gastroenterology)
Gastroenterologist and Physician

Dr Calvin Koh

Adjunct Assistant Professor of Medicine National University of Singapore

Dr Calvin Koh is a gastroenterologist practicing at Gleneagles Hospital, Singapore. He obtained his medical degree (MBBS) from the National University of Singapore (NUS) and underwent further medical training at the National University Hospital (NUH), where he subsequently obtained his specialist accreditation from the Specialist Accreditation Board (SAB) of Singapore and is a fellow of the Academy of Medicine Singapore.

Following completion of specialist training, he was awarded an Academic Medicine Development Award and undertook an advanced endoscopy fellowship under the auspices of the American Society for Gastrointestinal Endoscopy (ASGE) with the Division of Gastroenterology, Hepatology and Nutrition at the University of Florida, USA to further his interest in interventional endoscopy.

“No matter your digestive concern, we provide thorough evaluations and a wide range of treatments.”

Doctor's Profile & History

Prior to joining The Gastroenterology Group, Dr Koh was senior consultant at NUH, where he also served as director of endoscopy, as well as an assistant professor at the NUS Yong Loo Lin School of Medicine with clinical and research interests in endoscopy, pancreatobiliary disease, gastric and colon cancer, with more than 50 academic papers in these fields in regional and international scientific journals. He is also faculty for local and regional gastroenterology conferences, and is a member of the Residency Advisory Committee for Gastroenterology training in Singapore.

He is a fellow of the Royal College of Physicians (FRCP) (London), as well as the American Society of Gastrointestinal Endoscopy (FASGE), and a current committee member of the chapter of Gastroenterology in the College of Physicians at the Academy of Medicine, Singapore.

Besides gastroscopy and colonoscopy, he also performs endoscopic ultrasound (EUS), endoscopic retrograde cholangiopancreatography (ERCP), small bowel enteroscopy, radiofrequency ablation of Barretts dysplasia, percutaneous endoscopic gastrostomy and nasojejunal feeding tube placements as well as endoscopic mucosal resection of colon polyps.

Our Values

Caring for Your Digestive Health, Every Step of the Way

From diagnosis to treatment, we guide you through your journey to better digestive health.

Compassionate Care

We treat every patient with empathy, ensuring a supportive and respectful experience throughout their healthcare journey.

Excellence in Treatment

We are committed to delivering the highest standard of care, using advanced technology and evidence-based practices for optimal outcomes.

Patient-Centered Approach

We prioritise each patient's unique needs and preferences, creating personalised treatment plans that promote their long-term health and well-being.

Our Team

Meet Our Doctors

Dr Gwee Kok Ann

Gastroenterologist and Physician

Dr Webber Chan

Gastroenterologist and Physician

Dr Roland Chong

Gastroenterologist and Physician

Dr Lui Hock Foong

Gastroenterologist and Physician

FAQs

Frequently Asked Questions

An endoscopy is a minimally invasive procedure where a thin, flexible tube with a camera is used to examine the digestive tract. It is often recommended to diagnose or monitor conditions like acid reflux, ulcers, or abnormal growths.
Before a colonoscopy, you will be given detailed instructions, which typically include a liquid diet the day before and taking a prescribed laxative to empty the colon for a clear view during the procedure.
Most gastroenterology procedures, like endoscopy and colonoscopy, are performed with sedation, ensuring you remain comfortable and pain-free throughout the process. Some patients may experience mild discomfort afterward, but recovery is typically quick.
We work with a wide range of insurance providers to ensure that our patients receive the care they need without financial concerns. If you’re unsure about your coverage, our team is happy to assist you in confirming your plan's benefits.

Visit Us

The Gastroenterology Group Clinics

Gleneagles Hospital Annexe Block

Phone Number

Mt Elizabeth Novena Hospital Medical Centre

Phone Number

Mt. Alvernia Medical Centre A

Phone Number

Parkway East Medical Centre

Phone Number