Exceptional medical leadership and expert care
At Eastern Endoscopy Centre, your gastrointestinal health is guided by a premier team of consulting gastroenterologists. Each specialist brings combined clinical expertise, advanced university teaching hospital training, and a deep commitment to patient-centred care.
Our physicians hold full recognition from the Conjoint Committee for the Recognition of Training in Gastrointestinal Endoscopy and maintain active memberships with the Gastroenterological Society of Australia (GESA). When operating in our state-of-the-art day hospital, they deliver the outstanding diagnostic accuracy and safety profiles that define our facility.
All outpatient clinic consultations and open-access procedural bookings are securely managed on behalf of our specialists by Gastro Services & Facilities (GSF). Referrals and appointment bookings must be submitted through GSF.
2026 key performance indicators for our consulting gastroenterologists
Excellent complete colonoscopy rates
Our specialists achieved an exceptional complete colonoscopy rate of 99.5% in 2026, ensuring a thoroughly comprehensive and dependable diagnostic evaluation for every patient.
Leading withdrawal times
Our specialists dedicate a meticulous 9.5 to 16.25 minutes to procedural withdrawal times, consistently outperforming the minimum industry benchmark of 6 minutes to guarantee a highly detailed mucosal inspection.
Outstanding adenoma detection rates
Our specialists maintained an outstanding adenoma detection rate of 60.12% in 2026, significantly exceeding the 25% industry standard and the 47.12% peer benchmark to deliver superior preventative care and cancer screening accuracy.
Low complication rates
Our specialists had an exemplary patient safety profile by maintaining exceptionally low clinical complication rates for post-polypectomy perforation, post-polypectomy haemorrhage, perforation post oesophageal dilation, and potential aspiration.
Our consulting gastroenterologists
Dr John Gibbons
MBBS(QLD), FRACPClinical profile: Dr Gibbons is a senior consultant gastroenterologist providing comprehensive diagnostic and interventional endoscopy services for the South East Queensland medical community. His practice focuses on high-quality colonic surveillance, advanced adenoma detection, and strict adherence to evidence-based clinical indicators. He prioritises open-access referral pathways, ensuring streamlined diagnostic pipelines and timely, detailed reporting back to primary care physicians.
Clinical interests and referral indications: Colorectal cancer screening, investigation of altered bowel habits, positive National Bowel Cancer Screening Program (NBCSP) triage, and surveillance frameworks for high-risk family history cohorts.
Dr Kate Cayzer
MBBS(QLD), PhD, FRACPClinical profile: Dr Cayzer provides comprehensive specialist care across luminal gastroenterology, balancing expert diagnostic investigation with structured chronic disease management frameworks. Her clinical approach emphasizes objective diagnostic workups, close collaborative care with local GPs, and rapid therapeutic intervention for acute presentations.
Clinical interests and referral indications: Comprehensive management of inflammatory bowel disease (IBD including Crohn’s disease and ulcerative colitis), investigative gastroscopy for dyspepsia and dysphagia, management of coeliac disease, and therapeutic polypectomy techniques.
MBBS(QLD), FRACP
Dr Jillian Rosenstengel
Clinical profile: Dr Rosenstengel operates with a strong focus on advanced diagnostic technologies and technical precision. Her practice integrates high-magnification mucosal assessment with non-invasive small bowel diagnostics, providing comprehensive investigative support for complex or obscure gastrointestinal presentations.
Clinical interests and referral indications: Small bowel capsule endoscopy analysis, diagnostic workup for unexplained iron deficiency anaemia, evaluation of obscure gastrointestinal bleeding, and high-definition colonic surveillance.
BSc, MBBS(QLD), FRACP
Dr Nicholas Tutticci
Clinical profile: Dr Tutticci specialises in advanced diagnostic and interventional endoscopy, focusing heavily on modern technical standards and innovative procedural frameworks. His clinical work prioritises high adenoma detection rates (ADR), real-time computer-aided artificial intelligence mucosal characterisation, and the safe, definitive management of mucosal lesions.
Clinical interests and referral indications: Complex colonic polyp removal utilising advanced wire loop resection (snares) and clips, AI-assisted diagnostic endoscopy, targeted flexible sigmoidoscopy for distal colonic disease, and rapid-access diagnostic screening.
Dr Tim O'Sullivan
MBBS(JCU), PhD(USyd), FRACPClinical profile: Dr Tim O'Sullivan is an Australian-trained gastroenterologist and advanced interventional endoscopist holding concurrent staff specialist appointments at the Royal Brisbane and Women's Hospital and STARS. Following core training in Queensland, he completed a specialised two-year advanced endoscopy fellowship at Westmead Hospital and a PhD in colorectal endoscopic resection through the University of Sydney. He balances comprehensive general gastroenterology with open-access interventional procedures, focusing heavily on procedural quality and high-level diagnostic accuracy.
Clinical interests and referral indications: Advanced colonic tissue resection (EMR and ESD), third-space endoscopy (POEM), management of colorectal neoplasia, and endoscopic practice quality auditing.