You should see your GP about seeing a gastroenterologist if you have persistent, recurrent, or concerning digestive symptoms, including chronic bloating, blood in your stool, difficulty swallowing, unexplained weight loss, or ongoing heartburn that does not respond to over-the-counter treatment. A GP referral is required for Medicare rebates on specialist consultations in Australia.
What Is a Gastroenterologist?
A gastroenterologist is a specialist doctor who diagnoses and treats conditions affecting the digestive system, including the oesophagus, stomach, small intestine, colon, liver, pancreas, and gallbladder. Unlike a GP, a gastroenterologist has advanced expertise in complex gut conditions and performs diagnostic procedures such as colonoscopy, gastroscopy, and liver fibroscan.
Signs and Symptoms That Warrant a Referral
- Digestive symptoms that persist, recur, or worsen
- Blood in stool or rectal bleeding; should always be medically assessed and may be due to polyps, inflammatory bowel disease, or colorectal cancer
- Difficulty swallowing (dysphagia); may indicate oesophageal conditions
- Unexplained weight loss; can signal malabsorption, coeliac disease, or other serious conditions
- Chronic heartburn or reflux (GORD); persistent despite lifestyle changes and medication may need investigation for Barrett’s oesophagus
- Abnormal bowel cancer screening; positive FIT test requires follow-up colonoscopy
- Persistent diarrhoea or constipation; ongoing changes for more than four weeks
- Family history of bowel cancer; may need earlier, more frequent screening
Many digestive symptoms are common and treatable, but persistent or concerning symptoms should not be ignored, especially when associated with bleeding, weight loss, anaemia, or swallowing difficulty.
Seek urgent medical attention for severe abdominal pain, vomiting blood, black stools, chest pain, dehydration, or inability to swallow fluids.
Common Conditions Treated
- IBS; affects approximately 10–15% of Australians
- IBD; Crohn’s disease and ulcerative colitis
- Coeliac disease; autoimmune condition triggered by gluten
- Liver disease; fatty liver disease (MASLD, previously called NAFLD), hepatitis, cirrhosis
- Barrett’s oesophagus; precancerous change from long-standing reflux
- Colorectal polyps and cancer surveillance
- H. pylori infection; linked to stomach ulcers and gastritis
What to Expect at Your First Appointment
- Detailed history: symptoms, duration, triggers, diet, medications, family history
- Physical examination: abdominal examination
- Review of investigations: bring any existing blood tests, stool tests, or imaging
- Plan of action: further investigations (colonoscopy, gastroscopy) or treatment adjustments
- Follow-up: letter sent to referring GP with findings
Bring: GP referral letter, medication list, recent test results, Medicare card, symptom diary.
Procedures Available
- Colonoscopy; a flexible camera is used to examine the large bowel (day procedure under sedation)
- Gastroscopy; a camera examination of oesophagus, stomach, duodenum
- Liver fibroscan; non-invasive ultrasound measuring liver stiffness
See a Gastroenterologist Through Nuvo Health
Nuvo Health has multiple experienced gastroenterologists in Sydney, including Dr Suhirdan Vivekanandarajah in Rozelle, Dr Akalya Mahendran in Glebe, Dr Yanna Ko in Five Dock and Dr Beatrice Brennan in Lane Cove. Get a GP referral from any of Nuvo Health’s 22 medical centres.
Frequently Asked Questions
Do I need a GP referral?
Yes. Medicare requires a valid GP referral for specialist rebates. Without it, you pay the full fee with no Medicare rebate.
How long is the typical wait?
Urgent referrals (rectal bleeding, positive bowel screening): 1 to 2 weeks. Routine referrals: 2 to 6 weeks.
What’s the difference between a gastroenterologist and a GP for gut problems?
GPs manage common issues (reflux, mild IBS). Gastroenterologists handle complex, persistent, or serious conditions and perform procedures GPs cannot.
Is it covered by Medicare?
With a GP referral, Medicare covers a portion. Some gastroenterologists bulk bill; others charge a gap fee.
What should I bring?
GP referral, Medicare card, medication list, recent test results, private health insurance details, symptom diary.
Can I get a colonoscopy without seeing a gastroenterologist first?
Generally no. An initial consultation is needed to assess whether colonoscopy is appropriate and to explain the preparation process.
At what age should I have my first colonoscopy?
A free FIT (faecal immunochemical test) is recommended every 2 years from age 45. A colonoscopy may be recommended earlier or instead if you have symptoms, a positive FIT result, a strong family history, inflammatory bowel disease, or other risk factors. Discuss your individual risk and screening plan with your GP.
How do I prepare for a colonoscopy?
Low-fibre diet for 1 to 2 days, then bowel prep solution to empty the bowel. Your specialist’s rooms will provide detailed instructions. You’ll need someone to drive you home.
