Dr Oliver Duncan is a Consultant Gastroenterologist and Hepatologist with extensive training within Australia and overseas. He obtained his medical degree at the University of Notre Dame in Fremantle in 2009 and became a member of the Royal Australian College of Physicians in 2016, after completing his specialty training in Gastroenterology and Hepatology.

Dr Duncan is skilled in all aspects of general gastroenterology and hepatology and has a special interest in fatty liver disease, hepatitis C and liver cancer. Oliver is actively involved in clinical research and has access to a range of clinical trials in the fields of Hepatology and IBD.

Dr Oliver Duncan has special interests in:

• General gastroenterology and hepatology
• Gastroscopy and colonoscopy
• Bowel cancer screening

Dr Brotodihardjo graduated from University of Melbourne in 1986. He completed his General Gastroenterology training in 1993 and completed his final year as Hepatology Fellow in Sydney.

Dr Brotodihardjo has a special interest in:

• Inflammatory Bowel Disease
• Fatty liver
• Capsule endoscopy
• Colorectal polyps surveillance

Languages spoken: Mandarin Indonesian

Dr Madhavi Kasi graduated from the NTR University Andhra Pradesh, India in 2004. She commenced practising in the U.K and completed her Gastroenterology training at the Nottingham University Hospital, U.K. Dr Kasi then undertook a Hepatology and Liver transplant Fellowship from the University of Cambridge, U.K. She also holds Memberships from the Royal College of Physicians, U.K and the Royal Australian College of Physicians & GESA.

Dr Kasi has a special interest in:

• All Liver conditions: NAFLD/NASH, Viral Hepatitis, Alcohol-related Liver Disease, Autoimmune Liver Disease and complex Liver Diseases. Presented at various national and international meetings
• General Gastroenterology conditions: Coeliac Disease, Diarrhoea, Constipation, weight loss and complex Reflux Disease
• Functional GI Disorders
• GI bleeding- Multiple local and national projects
• Surveillance Endoscopy for Barrett’s and Colonoscopy for Polyps, where she has presented work and video cases at international meetings

Dr Zhou grew up in Brisbane and completed his medical studies at the University of Queensland. He completed his internship and basic physician training at Princess Alexandra Hospital in Brisbane. Dr Zhou then undertook three years of advanced training in gastroenterology at Townsville and Royal Brisbane and Women’s Hospital.

After completing his gastroenterology training in 2011, Dr Zhou returned to Princess Alexandra Hospital in Brisbane in 2012 and spent a further year completing his liver fellowship.

Dr Zhou enjoys all aspects of gastroenterology including general gastroenterology, inflammatory bowel disease, and endoscopic procedures. Dr Zhou’s sub-specialty interest is liver diseases where he manages a number of conditions including viral hepatitis, fatty liver disease and hemochromatosis.

Dr Ivan Valiozis completed his medical degree from the University of New South Wales in 1990. He has been working in the Wollongong area for many years and has been with Rosemont Endoscopy Centre since 2000.

Dr Valiozis offers consulting and procedures at Rosemont Endoscopy Centre and patients with more complex medical histories he is then able to see at the Wollongong Hospital where he also works regularly.

Dr Sidhu graduated from Bond University in 2010. He undertook his physician training at Westmead Hospital in Sydney. He completed his advanced training in Gastroenterology and Hepatology at Westmead and Blacktown Hospital.

He recently finished his training in advanced therapeutic endoscopy including ERCP. He is currently undertaking a PhD in Medicine focusing on innovative endoscopic techniques for treating early GI tract malignancies.

Dr Nikola Mitrev obtained a Bachelor of Medical Science (2005 – 2007) followed by a Bachelor of Medicine/ Bachelor of Surgery (2008 – 2011) at the University of Sydney. He attained his Gastroenterology and Hepatology specialist qualifications the end of 2018, having trained at Concord Hospital, Gosford/ Wyong hospitals and the Royal Prince Alfred Hospital. In 2019 he further completed a gastroenterology fellowship year in Blacktown hospital.

In parallel to his gastroenterology advanced training, Dr Mitrev attained a Master’s degree from the University of Sydney for his work in the field of therapeutic drug monitoring-guided biologic drug therapy in Inflammatory Bowel Disease.

He currently consults privately and performs gastroscopies and colonoscopies at Norwest Private Hospital, Lakeview Private Hospital and Rosemont Endoscopy Centre. In addition, he is a locum gastroenterologist at Wollongong Hospital.

Dr Wong is a general gastroenterologist with an interest in high quality colonoscopy and endoscopic mucosal resection of large polyps.

He graduated from the University of Western Australia with a Bachelor of Medicine and Bachelor of Surgery with honours in 2010.  After completing basic physician training in Perth, he went on to advanced training in gastroenterology at Lismore Base Hospital, Port Macquarie Base Hospital, and Royal Prince Alfred Hospital in NSW. He then completed a year of advanced training at QEII Jubilee Hospital focussing on high quality colonoscopy, techniques to improve the adenoma detection rate, advanced endoscopic techniques for polyp resection, as well as capsule endoscopy.

In 2018 Dr Wong was awarded his fellowship from the Royal Australasian College of Physicians.  Dr Wong is committed to continuing medical education and is an associate lecturer at University of Queensland, and is involved in clinical teaching at QEII.  He is able to provide gastroscopy, colonoscopy, capsule endoscopy as well as iron infusions.

He is committed to supporting his patients through their journey and is available for procedure and consulting lists at Westside Private Hospital.

Dr Neal Martin is a full time Staff Gastroenterologist at the Princess Alexandra Hospital and also consults at the Westside Private Hospital. He underwent advanced training in gastroenterology and hepatology in Queensland, following which he travelled to London for an IBD Fellowship at the Royal London and St Bartholemew’s hospitals. On his return to Brisbane in 2011, he established the Inflammatory Bowel Disease and Motility Clinic and the IBD Hot Clinic.

Currently Dr Martin is involved in the IBD/Motility Clinic and the Intestinal Failure and IBD Hot Clinics. He is responsible for the IBD inpatients, as well as a weekly inpatient TPN round and also the Home Parenteral Nutrition patients.

He participates in endoscopy and colonoscopy as well as Bowel Screening colonoscopy and capsule endoscopy. Dr Martin is involved in Registrar and Fellow teaching, and participates in the QGEP lecture series with a focus on IBD.

Dr Richard Cheng is an Australian trained gastroenterologist and the Director of Gastroenterology at Redcliffe Hospital in Brisbane. Dr Cheng graduated from the University of Melbourne and was awarded the Fellowship of the FRACP in 2014. His further studies included a Bachelor of Medical Science through the Austin Hospital Liver Transplant Unit, where he trained in management of chronic liver disease and its complications.

Dr Cheng’s Special interests include:

• Endoscopy (Gastroscopy) / Colonoscopy +/- polyp removal
• Colorectal cancer screening (National Bowel Cancer Screening Program)
• Inflammatory bowel disease: Crohn’s Disease and Ulcerative Colitis
• Functional bowel disease – reflux, IBS (irritable bowel syndrome), change in bowel habit
• Gastrointestinal bleeding and Iron deficiency Anaemia
• Liver Disease

Dr Peerbaccus is a dual trained Gastroenterologist and Internal Medicine Specialist. He graduated from the University of Cape Town-South Africa in 2005. Dr Peerbaccus relocated to New Zealand in 2007 where he completed his advanced training in Auckland and awarded his Fellowship of the Royal Australian College of Physicians (FRACP) in 2018.

He has received extensive training in General Gastroenterology, Inflammatory Bowel Disease, Liver Diseases, Motility Disorders and Functional Disorders.

Yanez relocated to North Brisbane in 2020 and consults privately at North Lakes Day Hospital where he provides a wide range of services in General Gastroenterology and Hepatology. He performs Colonoscopy & Gastroscopic procedures at North Lakes Day Hospital.

Dr Peerbaccus has a special interest in:

• Microscopic Colitis
• Inflammatory Bowel Disease
• Coeliac Disease
• Irritable Bowel Syndrome
• Liver Disorders
• Haemorrhoid Banding
• Bowel Cancer Screening
• Therapeutic Endoscopy

Dr Stephen Williams is currently a Senior Visiting Medical Officer (VMO) in Gastroenterology and Hepatology at Westmead Hospital. Dr Williams is also an honorary therapeutic endoscopy consultant at Westmead’s Children’s Hospital and a VMO at Southern Highlands Private Hospital and Rosemont Endoscopy Centre. Prior to these positions, Dr Williams was Head of Department and Director of Endoscopy at Westmead Hospital as well as Chairman of the Australian Gastrointestinal Endoscopy Association (AGEA).

Dr Williams covers all aspects of Gastroenterology and Therapeutic endoscopy with a particular interest in the endoscopic management of large colonic polyps as well as biliary and pancreatic disease, with the role of endoscopy in the diagnosis and therapy of these conditions.

Dr Kendall Williams completed her medical degree at the University of New South Wales in 2007 and a Masters of Public Health at the University of Sydney in 2015. Kendall has worked in Wollongong, Sydney and at the Gold Coast and joined the team at Rosemont Endoscopy Centre in 2017.

Kendall has a special interest in Hepatology, General Gastroenterology and Bowel Cancer Screening and offers both consulting and procedural services in Wollongong.

Dr Hadi Moattar is a clinical Gastroenterologist and Hepatologist with a special interest in Inflammatory Bowel Disease (IBD), Irritable Bowel Syndrome (IBS), Coeliac Disease, Eosinophilic Oesophagitis and Luminal Endoscopy and Polypectomy. Dr Moattar completed his Medical Degree with distinction in 2004 and since then, he has worked in various hospitals both in the United Kingdom and Queensland.

Hadi uses his clinical and interpersonal skills to optimise patients’ care and quality of life in close collaboration with IBD Nurses, Dieticians, Colorectal Surgeons, Clinical Psychologists and Radiologists.

Dr Moattar performs Upper Endoscopy, Colonoscopy and Polypectomy along with consultations at Montserrat Hospitals. He accepts both private and open access referrals and can be contacted via the information below for enquiries or bookings.

Dr Maguire graduated from University College Dublin in 1988 and commenced her training in Gastroenterology in Dublin in 1992. She spent a year doing clinical research in Inflammatory Bowel Disease at the Glasgow Royal Infirmary and completed her training at the Princess Alexandra and Mater Adult Hospitals in Brisbane. She became a Fellow of the Royal Australian College of Physicians in 1999.

Dr Maguire has a special interest in:

• General Gastroenterology
• Inflammatory Bowel Disease

Dr Maguire commenced with Montserrat in 2000 and offers consultations and procedure from our Samford Road Day Hospital.

Dr Mark Norrie has such an interesting career working across Australia and New Zealand.  He started with us at Montserrat Day Hospitals back in 2003 and currently has procedure lists and consults from Westside Private Hospital and regularly visits Longreach and Emerald.

 Mark graduated with MBChB in 1988 and has completed a PhD at the University of New South Wales in Molecular Biology, looking at gene methylation in colorectal biology carcinoma.   He is trained in all facets of Gastroenterology including training in the provision of small bowel capsule endoscopy. He also continues to practice in the public health system.

Special interests include:

• Small Bowel Capsule Endoscopy
• Inflammatory Bowel Disease

Languages: English and French.

Dr Rebecca Ryan has a strong interest in Women’s Digestive Health/Functional gut disorders as well as her Subspecialty Training in General and Transplant Hepatology.

Dr Ryan graduated from Flinders University of South Australia with Honours in 1998 and began her advanced training in Gastroenterology at the Royal Adelaide Hospital. Her final years of training (including a clinical fellowship year) were at the Princess Alexandra Hospital and Greenslopes Private Hospital. Dr Ryan worked as a Senior Staff Specialist at the Princess Alexandra Hospital from 2007 until 2017, and as a Senior Member of the Queensland Liver Transplant Team.

Dr Ryan has been working in private practice since 2007, joining Montserrat Day Hospitals in 2012.

Special Interests:

• Liver Disease
• Ferinject Iron Infusions
• Functional Gut Disorders

Dr Terrence Tan joined us back in 2014 and has become an integral member of the Montserrat Day Hospital team. Terrence has procedure lists and consults from our Westside Private hospital as well as from rooms at Ipswich.

Terrence graduated from the University of NSW in Sydney with a Bachelor of Medicine and Bachelor of Surgery. He then went on to further training in Gastroenterology & Hepatology in Perth, where he explored his interest in patients with chronic hepatobiliary disorders and liver failure, as well as aiding with the teaching of younger physicians. He was awarded a fellowship from the FRACP in 2008 and then completed his doctorate (PhD) at the University of Queensland. Terrence has also been working as a staff specialist at the Princess Alexandra Hospital and is continuing research in his field.

Dr Tan’s special interests include:

• Chronic hepatobiliary disorders
• Liver disease and issues

Languages: English and Malaysian