Doctors

Dr Jason Grant

Gastroenterology, hepatology

Dr Grant is a gastroenterologist with a particular interest in:
- Inflammatory Bowel Disease
- No Gap Endoscopy & Colonoscopy (including EMR & Haemorroidal Banding)
- Liver Diseases
- Irritable Bowel Syndrome
- Bowel Cancer Screening

Dr Sandra Park

Gastroenterologist

Dr Sandra Park is a female consultant Gastroenterologist.

After graduating from the University of Sydney in 1994, Dr Park trained at Concord, Prince of Wales and Wollongong Hospitals. She became a Fellow of the Royal Australasian College of Physicians in 2000 and subsequently joined the internationally recognised University of NSW Pancreatic Research Group, world leaders in the study of alcoholic pancreatitis and pancreatic fibrogenesis. Dr Park was involved in the group’s seminal work on the role of Pancreatic Stellate Cells in pancreatic cancer and has a number of publications in this area.

Dr Park is a general gastroenterologist and is accredited to perform gastroscopy and colonoscopy. She consults from rooms in Chatswood and performs endoscopic procedures at North Shore Private Hospital and Macquarie University Hospital. She participates in the No Gap Scheme.

Dr Park offers advice on a wide range of GI issues including IBS, reflux disease, diarrhoea, constipation, and bowel cancer screening. Her dedication and understanding, combined with expertise and professionalism help provide quality patient care.

Dr Park speaks Korean. She enjoys spending time with her husband, and three children.

Dr John Chetwood

Gastroenterologist

Dr. John Chetwood is a consultant gastroenterologist. John graduated with a Distinction from Imperial College London (UK) and has worked internationally in the UK and New Zealand and now resides in Australia.

John undertook his formal gastroenterology training at Royal Prince Alfred Hospital a distinguished quaternary referral centre where he worked with advanced liver disease, liver transplants, state-wide referrals for acute liver failure, intestinal failure, advanced endoscopic procedures, as well as complex inflammatory bowel disease care (Crohn’s disease and ulcerative colitis). John undertook further training in inflammatory bowel diseases with a dedicated fellowship at Concord Repatriation General Hospital and is currently undertaking a PhD in optimising exciting new and existing treatments in inflammatory bowel disease, for which he has been awarded a prestigious National Health and Medical Research Council scholarship.
Prior to this, he worked in the Newcastle region in multiple medical specialities from intensive care to rural general medicine. He has also undertaken clinical and research work in Malawi, South Africa, Nigeria, and India.

John also has a BSc with Honours from Imperial College London in gastroenterology, and a DTM&H with Distinction from Liverpool School of Hygiene and Tropical Medicine. He has been awarded multiple clinical prizes and distinctions, has authored numerous academic papers, and has presented his research internationally. He holds a clinical associate lecturer title with the University of Sydney and relishes his involvement in gastroenterology mentorship and education.
John is a member of GESA and participates in the National Bowel Cancer Screening Program, he is accredited for gastroscopy and colonoscopy (including polyp removal) by the Conjoint Committee for the Recognition of Training in Gastrointestinal Endoscopy. He regularly treats patients with a variety of gastrointestinal issues from Barrett’s disease, gastro-oesophageal reflux, peptic ulcer disease, functional gastrointestinal disorders such as irritable bowel syndrome, and liver issues including hepatitis, fatty liver disease and liver cancer.