
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
He completed his training in Sydney Royal Prince Alfred and St George Hospitals, before undertaking further subspecialty training in pancreaticobiliary medicine, inflammatory bowel disease, and minimally invasive endoscopic management of digestive tract, pancreatic and biliary conditions under renowned experts at St James University Hospital in the United Kingdom and Hôpital Jean Mermoz in France.
He has special interests in Bariatric Endoscopic procedures, and advanced diagnostic and therapeutic endoscopic procedures including high quality screening for conditions including colon cancer, Barrett’s oesophagus in reflux disease, and pancreatic disease; resection of early lesions; and management of pancreatic, biliary, and small bowel disorders using EUS, ERCP, and balloon enteroscopy. His research has focused on the improvement of the diagnostic performance and patient outcomes of existing endoscopic techniques.
He has presented the findings of this research in Australia, the USA, and Europe and been published in international scientific journals and medical texts. He is a member of several Australian and International professional societies and is accredited for gastroscopy, colonoscopy, endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound (EUS) by the Conjoint Committee for the Recognition of Training in Gastrointestinal Endoscopy.
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 and Frenchs Forest. He’s a visiting Gastroenterologist at 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