Meet Dr Mathew Keegan
MBBS, FRACP
Dr Mathew Keegan is a Gastroenterologist, Hepatologist, Pancreaticobiliary Specialist and Advanced Interventional Endoscopist who lives on the Northern Beaches with his family. He is committed to providing compassionate, thorough, holistic and high-quality care to all of his patients. He has an evidence-based approach to diagnosis, treatment and care of his patients and he supports efforts to promote bowel or colorectal cancer screening programs to facilitate early detection of disease.
Education and Training
Dr Keegan has expertise across diagnostic and screening gastroscopy and colonoscopy, advanced therapeutic endoscopy, and minimally invasive resection of early or precancerous lesions (for example, using EMR/ESD). He also manages complex pancreatic, biliary and small-bowel disorders using Endoscopic Ultrasound (EUS), endoscopic retrograde cholangiopancreatography (ERCP) and balloon enteroscopy.
He is committed to prompt diagnosis and optimising patient outcomes through high-quality, minimally invasive techniques. He is a founding member of the multidisciplinary team (MDT) at NBH, working closely with fellow specialists to ensure coordinated and comprehensive care for cancer patients.
Dr Keegan completed his medical degree at UNSW and undertook advanced gastroenterology training at Royal Prince Alfred and St George Hospitals. He later completed subspecialty fellowships in advanced endoscopy, IBD and pancreatobiliary/luminal medicine and endoscopy under renowned specialists at RPA, St James University Hospital (UK) and Hôpital Jean Mermoz (France), followed by an observership at Hôpital Erasme in Belgium.
He is accredited for gastroscopy, colonoscopy, ERCP and EUS by the Conjoint Committee for the Recognition of Training in Gastrointestinal Endoscopy, and is a member of several Australian and international professional societies, including the World Health Organisation’s FIDES Network and the World Gastroenterology Organisation’s AI Taskforce.
Dr Keegan’s research interest is in improving diagnostic accuracy, therapeutic outcomes, procedural quality and safety in interventional and general endoscopy. His work spans AI applications in EUS and ERCP, EMR/ESD optimisation and pancreatobiliary endoscopy, with past international publications and presentations across Australia, Europe and the US, and has been published in international scientific journals and medical texts. Dr Keegan is an invited reviewer for the American Society for Gastrointestinal Endoscopy’s (ASGE) journals VideoGIE and Gastrointestinal Endoscopy.
He speaks English and French.
Approach to Patient Care and Ethos
Dr Mathew Keegan takes pride in how much care, thoroughness, attention to detail and time he gives every patient, ensuring that he gives them the best possible evidence-based, holistic, and high-quality care. His dedication to his field and his commitment to his patients are unwavering.
He offers consultations in Mona Vale, Frenchs Forest and Wahroonga. He’s a visiting Gastroenterologist at the Sydney Adventist Hospital, Northern Beaches Hospital and North Shore Private, and he also performs procedures at Pittwater Day Surgery and Dee Why Endoscopy.
Dr Mathew Keegan’s Specialisations
Colonoscopy
Gastroscopy
EUS
ERCP
EMR / ESD (advanced polyp removal techniques)
IBD
Enteroscopy (small bowel endoscopy)
Barrett’s oesophagus
Colon cancer screening and surveillance
Pancreaticobiliary medicine
Part of multidisciplinary team coordinating care of cancer patients
Credentials
Accreditations, Awards, Professional Memberships
Why is screening so important?
“Around 90% of bowel cancer cases can be successfully treated if detected early”
Cancer Council (AU)
“Bowel cancer is the second most common cause of cancer death in Australia.”
Cancer Australia
“Bowel Cancer is the deadliest cancer for people aged 25-34.”
Bowel Cancer Australia