Meet our Team

Our team of talented surgeons and medical staff

Dr Clement Tsang

Upper Gastrointestinal and Bariatric Surgeon

Dr Clement Tsang is an upper-GI surgeon specialising in laparoscopic (keyhole) weight loss surgery. He is one of Sydney's most experienced obesity surgeons, having completed approximately 5,000+ procedures to-date. He performs approximately 350 - 400 gastric sleeve operations per year. He operates from Sydney's leading hospitals and provides cost-effective solutions for patients seeking to lose weight surgically and re-take control of their lives.

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Dr Daniel Chen


Dr Daniel Chen is a VMO Endocrinologist at St Vincent’s public hospital, St Vincent’s Private Hospital and Mater Hospital. Dr Chen has undergone his Endocrinology training at St Vincent’s hospital and has recently completed his PhD at Garvan Institute of Medical Research in Obesity and Insulin Resistance.

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Dr Michael Poon


Dr Michael Poon is a specialist anaesthetist who holds a high regard for patient safety, and in particular, safety in day surgeries.

His background in anaesthesia training comes from a variety of multitrauma, tertiary referral hospitals including St Vincent's Hospital, The Royal Women's Hospital at Randwick, St George Hospital and Liverpool Hospital.

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Dr Michael Moor

Assistant Surgeon

Dr Michael Moor has had over 20 years experience as a surgical assistant. He assists Dr Tsang and Dr Ritchie at Waratah Private Hospital, St Luke's Hospital and Sydney Private Hospital. He works in General Practice when not assisting our doctors.

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Liz Beavis

Bio - Bariatric

Liz has specialised in helping people to achieve their weight loss goals for the past 12 years. Liz was one of the first dietitians in Sydney to specialise in Bariatric surgery - helping clients before and after their weight loss surgery.

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Kate Gudorf

diabetes management

specialises in diabetes management and diabetes education, insulin resistance, and polycystic ovarian syndrome. Kate has completed ongoing training in diabetes education and management and looks forward to becoming a credentialed diabetes educator in 2016. Kate takes a realistic approach with her clients, focusing on goal setting and behaviour change.

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Amanda Moon

long-term behaviour

specialises in long-term behaviour change with a particular interest in weight management. She enjoys helping clients to become more intuitive eaters by recognising and acting on their hunger and fullness signals, appetite, and psychological influences on eating. As a personal trainer, she is also skilled in exercise education.

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Natasha brellah


With almost 20 years of working between tertiary care hospitals and in private practice, Natasha specialises in bariatric surgery management as well as antenatal care and diabetes management.

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Claudia Jahjah


You can feel at ease to consult with Claudia at any stage of your weight loss surgery program and she understands that weight loss surgery is not a ‘one-size fits all’ approach.

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Contact us today to arrange a private consultation and discuss your options.

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(02) 9221 3919
the Society of American Gastrointestinal and Endoscopic Surgeons