Gastroenterologists
Associate Professor Robert Bryant
Gastroenterologist | Endoscopy and colonoscopy, intestinal ultrasound
MBBS FRACP MScR (Oxon) PhD
Rob graduated from the University of Adelaide School of Medicine in 2005. He undertook his gastroenterology training at the Royal Adelaide Hospital and was awarded Fellowship of the Royal Australasian College of Physicians in 2013.
He thereafter worked as a Senior Clinical Fellow in Gastroenterology at the John Radcliffe Hospital in Oxford, United Kingdom, specialising in the management of inflammatory bowel diseases. Whilst in Oxford, Rob completed his thesis exploring genetic factors and mucosal immunology in ulcerative colitis, and was awarded a Masters of Science by Research (MScR) from the University of Oxford in 2015.
Rob holds a staff specialist position at The Queen Elizabeth Hospital, where he is clinical lead of the Inflammatory Bowel Disease Service within the Department of Gastroenterology. He remains actively involved in research and was awarded a Dean’s Commendation for Doctoral Thesis excellence for his PhD, which he completed at The University of Adelaide in 2018.
He has published multiple papers in peer-reviewed international journals and has been an invited speaker at both national and international conferences. He is passionate about education and is an Associate Professor at the University of Adelaide.
Rob is taking a short break from private consulting in 2023 to pursue research into inflammatory bowel disease. However he is undertaking regular colonoscopy lists and referrals for recall and surveillance procedures via the direct access pathway are welcomed.
Dr An Phan
Gastroenterologist | Endoscopy, Colonoscopy and ERCP
MBBS FRACP
An (also known as Vinh-An) grew up in Adelaide and graduated from the University of Adelaide in 2006. He completed his gastroenterology training at the Royal Adelaide Hospital (RAH) and became a fellow of the Royal Australasian College of Physicians in 2015. He continued to train in advanced endoscopic procedures at both the RAH and Queen Elizabeth Hospital. In 2020, An became a staff specialist at the Royal Adelaide Hospital.
He has remained involved in research and published multiple papers in peer-reviewed international journals. An has also presented at international meetings in Australia, USA, Europe and Japan.
His areas of interest include:
- Bowel Cancer Screening
- Endoscopic surveillance and management of Barrett’s Oesophagus
- Endoscopic Retrograde Cholangiopancreatography
- Reflux Disease
- Iron Deficiency
- Irritable Bowel Syndrome
He currently consults at:
- East Adelaide Medical Centre
- North Eastern Community Hospital
And performs endoscopic procedures at:
- St Andrew’s Private Hospital and
- North Eastern Community Hospital
An aims to deliver high quality, personalised patient care, delivered in an approachable manner. His other interests include spending time with his family, cooking and running.
Dr Dep Huynh
Gastroenterologist | Endoscopy and colonoscopy
MBBS FRACP
Dep obtained her Bachelor of Medicine and Bachelor of Surgery from the University of Adelaide in 2002. She completed her gastroenterology training at The Queen Elizabeth Hospital, followed by a clinical fellowship in Hepatology at the Royal Adelaide Hospital. She was admitted as a fellow of the Royal Australasian College of Physicians in 2011
Dep is a staff specialist and the clinical lead of liver services at The Queen Elizabeth Hospital. She is a senior clinical lecturer at the University of Adelaide and continues to be actively involved in both education and research. Her research interests are in gastrointestinal physiology and nutrition in liver disease. She has presented at both national and international conferences and was the recipient of the Douglas Piper Young Investigator Award in 2015.
In addition to the management of general gastroenterological disorders, Dep has a particular interest in chronic liver disease, including viral hepatitis and fatty liver disease. Dep received Conjoint Committee recognition for endoscopy and colonoscopy in 2011.
Dep consults at:
- East Adelaide Medical Centre
- Western Hospital (GP clinic)
- North Eastern Community Hospital
She performs endoscopic procedures at:
- Western Hospital
- North Eastern Community Hospital
- Calvary North Adelaide
- The Queen Elizabeth Hospital
- Broken Hill Base Hospital
Dep aims to provide friendly, personalised medical care to her patients.
Outside of work, she enjoys spending time with family, camping, hiking and travelling
Dr Tsai-Wing Ow
Gastroenterologist | Endoscopy and colonoscopy
MBBS FRACP
Dr Tsai-Wing Ow grew up locally in Adelaide. He obtained his medical degree from the University of Adelaide in 2008. He completed his basic medical training at the Royal Adelaide Hospital before undertaking his advanced training in Gastroenterology and Hepatology in the Central Adelaide Local Health Network of hospitals. He obtained his fellowship with the Royal Australasian College of Physicians in 2017.
During the later stages of his training, Tsai-Wing undertook a two-year clinical fellowship at King’s College Hospital in London, a sizeable quarternary centre for liver medicine and transplantation.
Since returning to Adelaide, Tsai-Wing has undertaken additional research as a PhD candidate to improve bowel cancer prevention and management through digital technologies. He is also employed as a Gastroenterologist at both the Royal Adelaide Hospital and Flinders Medical Centre. He has presented at both local and international conferences and has published in multiple peer-reviewed journals.
Tsai-Wing believes in the importance of individualised and holistic medicine and supporting his patients with relevant and up-to-date information to assist them in their medical decision making.
Dr Ryan Mathias
Gastroenterologist | Endoscopy and colonoscopy, Intestinal Ultrasound
BSc MSc MD
Ryan graduated from Flinders University School of Medicine (MD with Distinction) in 2015 and completed core gastroenterology training through Flinders Medical Centre, the Lyell McEwin Hospital and Royal Adelaide Hospital. He is currently undertaking a clinical fellowship in inflammatory bowel disease and intestinal ultrasound at the Queen Elizabeth Hospital.
Prior to his medical degree Ryan completed a Masters of Science by research (MSc) from the University of Calgary examining the role of the lymphatic system in the pathogenesis of intestinal inflammation and inflammatory bowel diseases. This background and his ongoing interest in research led to undertaking a PhD through the University of Adelaide examining the role of intestinal ultrasound in inflammatory bowel disease and functional gastrointestinal disorders.
Ryan has published papers in international peer-reviewed journals and has presented at local meetings in both Canada and Australia as well as international meetings in Europe. He is passionate about medical education and is a Clinical Lecturer at the University of Adelaide School of Medicine.
Ryan provides patients with specialist gastroenterologist services including consultation and intestinal ultrasound. He is Conjoint Committee certified in endoscopy and colonoscopy. His interests include inflammatory bowel disease, bowel cancer screening, functional gastrointestinal disorders and general gastroenterology.
Ryan began consulting at Lumen Gastroenterology in 2023.
He consults at:
- East Adelaide Medical Centre
- North Eastern Community Hospital
He performs endoscopic procedures at:
- St Andrews Hospital
- North Eastern Community Hospital
He performs intestinal ultrasound at:
- The Queen Elizabeth Hospital
His other interests include spending time with his family, cooking and specialty coffee.
Dr Wei Ting Soo
Gastroenterologist | Endoscopy and colonoscopy
MBBS FRACP
Dr Wei Ting Soo graduated from The University of Adelaide in 2012 and has worked at various hospitals across Adelaide and overseas in Singapore. She completed her Gastroenterology training at The Queen Elizabeth Hospital, Royal Adelaide Hospital and Flinders Medical Centre. She subsequently completed a fellowship in Inflammatory Bowel Disease at The Queen Elizabeth Hospital and became a fellow of the Royal Australasian College of Physician in 2021.
Wei Ting is interested in all aspects of Gastroenterology including bowel cancer screening, gastro-oesophageal reflux disease, iron deficiency, irritable bowel syndrome and inflammatory bowel disease (IBD). She has a special interest in managing IBD in women.
Wei Ting is a visiting specialist at The Queen Elizabeth Hospital and a Clinical Lecturer with the University of Adelaide. She is an accredited intestinal ultrasound (IUS) provider and performs endoscopies/colonoscopies. She can offer consultations in Mandarin.
She consults at:
- East Adelaide Medical Centre
She performs endoscopic procedures at:
- St Andrews Hospital
She performs intestinal ultrasound at:
- The Queen Elizabeth Hospital
Dr Sam Costello
Gastroenterologist | Endoscopy and colonoscopy
MBBS FRACP
Sam was born and raised in Mt Gambier, South Australia. He graduated from medical school at the University of Adelaide in 2004 and then completed basic physician training at the Royal Adelaide Hospital. Sam then completed Gastroenterology training at the Queen Elizabeth Hospital and Repatriation general hospital. He undertook a clinical fellowship in inflammatory bowel disease at St Mark’s hospital in London in 2016.
Sam is a staff specialist at the Queen Elizabeth Hospital and a consultant with the inflammatory bowel disease service. He established and continues to maintain the South Australian stool bank for the treatment of Clostridium difficile infection with faecal microbiota transplantation (FMT) and has advised other groups in Australia and internationally about developing similar services.
Sam is passionate about medical research. He is a PhD candidate at the University of Adelaide where the focus of his research has been FMT as a treatment for ulcerative colitis. He has published multiple papers in peer-reviewed international journals and has been an invited speaker at national and international conferences.
Sam enjoys teaching both medical students as well as doctors in training and is a clinical lecturer at the University of Adelaide.
His other interests include spending time with his family, playing cricket and watching Adelaide United.
Sam has currently ceased private practice to conduct medical research.