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Dr Graeme Rich


Gastroenterologist and Hepatologist

Dr Rich completed his medical training at the University of Queensland and specialised in
Gastroenterology and Hepatology. He completed a fellowship in Inflammatory Bowel
Disease and gastrointestinal motility.

Dr Rich has wide ranging interests in gastroenterology including therapeutic endoscopy and
colonoscopy, colorectal (bowel) cancer screening, bariatric endoscopy, liver disease and the
treatment of reflux and abdominal pain and is a certified endoscopist with the Conjoint
Committee for the Recognition of Training in Gastrointestinal Endoscopy (CCRTGE) and is
an active member of the Gastroenterological Society of Australia (GESA) and a fellow of the
Royal Australasian College of Physicians.

Dr Rich is actively involved in novel medical research and teaching through the University of Sydney,
University of Queensland and Bond University.

Dr Rich has an interest in health technology and improvement in medical efficiency and
health inequality. 

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Dr Omid Zarghom

Gastroenterologist and Hepatologist

After finishing his Physician training at The Alfred Hospital, Melbourne, Dr Zarghom
completed his Gastroenterology training at The Royal Melbourne Hospital and Western
Hospital in Victoria. He then undertook an Inflammatory Bowel Disease (IBD) fellowship at
The University of Toronto, Canada. 

Dr Zarghom has extensive experience in the management of complex gastrointestinal
diseases including Ulcerative Colitis and Crohn’s disease. He has ongoing research interests
in IBD and has published several articles on IBD in peer review journals.
Dr Zarghom has a special interest in diagnostic and therapeutic Gastroscopy and
Colonoscopy, in addition to Pillcam (capsule endoscopy), Coeliac disease and Irritable Bowel
Syndrome (IBS).

Dr Zarghom is a certified endoscopist with the Conjoint Committee for the Recognition of
Training in Gastrointestinal Endoscopy (CCRTGE), an active member of the
Gastroenterological Society of Australia (GESA) and a fellow of the Royal Australasian
College of Physicians. In addition, he has memberships with the College of Physicians and
Surgeons of Ontario (CPSO) Canada, American Gastroenterological Association (AGA), and
European Crohn’s and Colitis Organisation (ECCO).

Dr Zarghom’s practice encompasses all aspects of gastroenterology and liver diseases.
Dr Zarghom is fluent in Farsi.

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Dr Chris Rogan

Interventional Radiologist

Dr Rogan graduated Medicine from the University of NSW in 2002 with First Class Honours.
He was a Neurosurgery registrar and completed Basic Surgical Training prior to entering
radiology. Dr Rogan then trained in Radiology at Royal Prince Alfred Hospital and
subsequently, Chris was a Fellow in Vascular and Interventional Radiology at Imperial
College in London and obtained European board certification. 

Chris is currently Director of Intervention at RPA Hospital with a focus on Embolisation and
Endovascular surgery. Chris is a Clinical Lecturer at Macquarie University and as a specialist
at the Sydney Adventist Hospital his special interest is in treatment of symptomatic prostatic
hyperplasia and venous diseases including varicocele and pelvic veins.


Dr Walid Barto

Colorectal and robotic surgeon

Dr Walid Barto obtained his medical degree at the University of Sydney before commencing basic surgical training at John Hunter Hospital in Newcastle.  He completed his general surgical training at St Vincent's Hospital and was awarded the Royal Australasian College Fellowship in 2009. He undertook additional training in colorectal surgery at The Alfred Hospital. Melbourne and at Westmead Hospital in 2010 as a fellow of the Colorectal Surgical Society of Australia and New Zealand.


Dr Barto is an expert in Robotic Surgery (using Da Vinci Robot and Flex Robotic systems) for Bowel Cancer and was the first Colorectal Surgeon in the Southern Hemisphere to perform surgery for bowel tumours using the Flex Robotic System. 


Dr Barto works closely with the gynaecologists for laparoscopic treatment of stage 4 endometriosis and is actively involved in teaching and research in minimally invasive surgery.  He has published in the field of colorectal surgery, bowel endometriosis and modern surgical instrument design.   


Dr Barto is an active public health advocate and has been invited by 2GB and SBS radio to talk about diverticular disease and bowel cancer screening.


Surgery performed: Robotic bowel surgery, Robotic Hernia surgery, Trans-anal Doppler Guided Ligation for treatment of Haemorrhoids, Minimally invasive treatment of Stage 4 endometriosis.

Upper endoscopy/colonoscopy.


Dr Thaw Dar Htet


Dr Htet underwent endocrinology training at St Vincent’s Hospital, Sydney. She also holds a Master of Science in Diabetes and Endocrinology from the Barts and London, Queen Mary University of London.

She is currently undertaking a PhD at the Garvan Institute of Medical Research through the University of New South Wales (UNSW) studying personalised management of pre-­diabetes and type 2 diabetes mellitus. Her research has encompassed gestational diabetes, type 2 diabetes and pre-­diabetes, polycystic ovarian syndrome and bone disorders such as osteoporosis and has been presented in international and national conferences and published in peer­‐reviewed journals.


Dr Htet holds a conjoint associate lecturer position at UNSW and teaches medical students and junior doctors. She is also a member of the early career committee at Endocrine society Australia and is involved in developing strategies to promote career opportunities and development for endocrine trainees and young endocrinologists. She is a member of European Society of Endocrine (ESE) Endocrine Society Australia (ESA), Australian Diabetes Society (ADS), Australia and New Zealand Bone Mineral Society (ANZBMS) and Australian Diabetes in Pregnancy Society (ADIPS).


Dr Htet consults in all aspects of endocrinology and has a special interest in reproductive endocrinology, diabetes and bone disorders.

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