About Our Gastroenterologists

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      MBBS(Syd) FRACP 

Consultation for general gastroenterology & hepatology

Capsule Endoscopy 

Inflammatory bowel disease

Crohn's and ulcerative colitis

Irritable bowel syndrome

Endoscopic procedures  at:

• St Vincent's Private Hospital Lismore
• Ballina Day Surgery

       MBBS (Qld) FRACP 

Dr Cornwell is available for: 

Consultation for general gastroenterology & hepatology.

Inflammatory bowel disease.

Crohn's and ulcerative colitis.

Capsule Endoscopy - at our Lismore Rooms.

Irritable bowel syndrome.

Liver Biopsy & ERCP only at Lismore Base Hospital

Endoscopic procedures  at private hospitals:

• St Vincent's Private Hospital Lismore
• Ballina Day Surgery

All private procedures are billed No-Gap to your health fund.  Private uninsured options are available for a fee. 

Referrals to Dr Mark Cornwell at Northern Rivers Gastroenterology via your GP or specialist . Direct access for colonoscopy and gastroscopy available to patients meeting the criteria.

Dr Mark Cornwell studied Medicine at the University of Queensland and undertook Physician training at the Royal Prince Alfred and Princess Alexandra Hospitals before completing Gastroenterology training at the Royal Brisbane Hospital.

Mark moved to Lismore with his family in 1995 and in 2003 was a founding director of Northern Rivers Gastroenterology.
His training in upper GI endoscopy, colonoscopy, ERCP and capsule endoscopy is recognised by the Conjoint Committee and he has completed Colonoscopy Recertification.
Mark is a member of the Royal Australasian College of Physicians, GE Society of Australia, European Association for the Study of the Liver and the American Society for Gastrointestinal Endoscopy and has regularly attended national and international scientific meetings as part of his commitment to ongoing medical education.
Mark has participated in the education and training of medical students and doctors and has completed a Colonoscopy Train the Trainers course. He is a member of ANZGITA, a volunteer-based training organisation and has twice volunteered as an endoscopy trainer in Myanmar.

       BSc (med) BBS(hons)

            UNSW FRACP  

Dr Indira Singh-Grewal studied medicine at UNSW and then completed her internship, residency and  Physician training at St Vincents Hospital Darlinghurst. Gastroenterology training was completed at St Vincents and Prince of Wales Hospital Randwick.

She has practiced in the Northern Rivers area since 2003 and has 20yrs of experience working as a gastroenterologist in a regional setting in both private and public practice.

Areas of interest include:

Colonoscopies including polypectomy and EMR

Colorectal cancer screening and prevention – positive FOBTs, screening and surveillance Diagnostic  and therapeutic gastroscopies

PEG insertion

Consultation for GI symptoms in general gastroenterology including  reflux, inflammatory bowel disease ,coeliac disease, iron deficiency, altered bowel habit, dysphagia and others.

Endoscopic procedures: 

• St Vincent's Private Hospital Lismore
• Ballina Day Surgery
• Lismore Base Hospital

All private procedures are billed No-Gap to your health fund.  Private uninsured options are available for a fee.   Referrals to Dr Indira Singh-Grewal at Northern Rivers Gastroenterology  via your GP or specialist . Direct access for colonoscopy and gastroscopy available to patients meeting the criteria.

 Professional Certifications/ Affiliations:

GESA Colonoscopy recertification program with ADRs well above benchmark

Member Royal Australasian College of Physicians compliant with ongoing CPD requirements for continuing education, AMA member, Member American Gastroenterology Association, Supervision and training of Gastroenterology trainees for GESA, medical student education

Regular attendance at Scientific meetings.

          MBBS (Qld) FRACP

Dr Whitaker is available for: 

Consultation for general    

gastroenterology & hepatology.

Capsule Endoscopy.

Inflammatory bowel disease.

Crohn's and ulcerative colitis.

Irritable bowel syndrome.

Endoscopic procedures at  

• St Vincent's Hospital Lismore
• Ballina Day Surgery
• Lismore Base Hospital  

   In 2005 he relocated to the Lismore/Ballina area and joined Northern Rivers Gastroenterology.

Dr Whitaker is available for Consultation for general gastroenterology & hepatology.

Areas of interest include:

Consultation for GI symptoms in general gastroenterology including reflux, inflammatory bowel disease ,coeliac disease, iron deficiency, altered bowel habit, dysphagia and others as well as Capsule Endoscopy & Peg insertion

Consultation for general gastroenterology & hepatology.

Inflammatory bowel disease.

Crohn's and ulcerative colitis.

Capsule Endoscopy - at our Lismore Rooms.

Irritable bowel syndrome.

Referrals to Dr Whitaker at Northern Rivers Gastroenterology via your GP or specialist . 

All private procedures are billed No-Gap to your health fund.  Private uninsured options are available for a fee. 

Direct access for colonoscopy and gastroscopy available to patients meeting the criteria.

Professional Certifications/Affiliations: 

Dr Whitaker is a Fellow of the Royal Australasian College of Physicians and full member of the Gastroenterological Society of Australia (GESA), American Gastroenterological Association (AGA),  the GE Society of Australia and the European Association for the Study of the Liver

Fully qualified and accredited/continuously reaccredited in endoscopy and colonoscopy (Gastroenterology Society of Australia) and exceed requirements with Royal Australian College of Physicians Continuous Professional Development.

   FRACP MBBS (Sydney) 

BEng (Hons I) BSc (Newcastle) 

Working at Northern Rivers Gastroenterology, Ballina Day Surgery, St Vincent’s Hospital Lismore and Lismore Base Hospital since 2012, living locally. Friendly, experienced, and professional.

Main interest - Colonoscopy & Gastroscopy - FOBT, colorectal cancer screening, polypectomy, endoscopic mucosal resection, dysphagia, iron deficiency, change in bowel symptoms, genetic cancer syndromes, screening of family members, reflux, chronic radiation proctitis, inflammatory bowel disease (Crohn’s and ulcerative colitis), general gastroenterology and hepatology, and irritable bowel syndrome.

Fully qualified and accredited/continuously reaccredited in endoscopy and colonoscopy (Gastroenterology Society of Australia) and exceed requirements with Royal Australian College of Physicians Continuous Professional Development.

All private procedures are billed No-Gap to your health fund where possible.  Private uninsured options are available for a fee.

Please refer to Dr Angus Thomson at Northern Rivers Gastroenterology (02 6622 0388) via your GP or specialist (a referral is required). In most cases we can arrange private direct access for colonoscopy and gastroscopy to minimise your cost and effort.