Mr. Michael HiiFRACS, MBBS, BMedSci, PGDipSurgAnat
Oesophago-Gastric and Bariatric Surgeon
Clinical Lecturer, University of Melbourne

Mr Michael Hii

Mr. Michael Hii is an Oesophago-Gastric and Bariatric (weight loss) surgeon. He works as a consultant at St Vincent’s Hospital Melbourne and the Royal Melbourne Hospital and also holds honorary appointments at the Peter MacCallum Cancer Centre (VCCC) and Eastern Health.

Michael completed medical school at the University of Melbourne and then surgical training at St Vincent’s Hospital and Eastern Health. He was awarded his surgical fellowship in 2009 and underwent subspecialty training in Melbourne and Brisbane.

Michael Hii enjoys a busy clinical workload, and in addition to clinical work, maintains a strong interest in research and education. He is a clinical senior fellow at the University of Melbourne. He chairs the St Vincent’s Upper GI and Hepatobiliary research group and is the supervisor of Pre-SET (surgical training) at St Vincent’s Hospital. He has published widely in Upper GI and bariatric literature.

Mr. Hii's clinical areas of interest include the treatment of oesophageal and gastric cancer, hiatus hernia repair, anti-reflux surgery, surgery for achalasia and obesity surgery (including gastric bypass, sleeve gastrectomy and revision procedures). Research areas of interest include enhanced recovery after surgery (ERAS) programs and optimising changes in muscle mass/ body composition with upper GI conditions and surgery.

Michael provides the following services

All of these are usually performed via keyhole surgery (unless specific patient circumstances require open surgery).

Education & Experience

  • Oesophago-Gastric surgery fellow, Princess Alexandra Hospital, Brisbane, 2011-2012
  • Obesity surgery fellow, Royal Brisbane and Women’s’ Hospital, Brisbane, 2011
  • Upper GI and HPB fellow, St Vincent’s Hospital, Melbourne, 2010
  • Fellowship of the Royal Australasian College of Surgeons (RACS), General Surgery, 2009
  • Post Graduate Diploma of Surgical Anatomy, Melbourne University Private, 2005
  • Bachelor of Medicine and Bachelor of Surgery, Melbourne University, 2000
  • Bachelor of Medical Science, Melbourne University, 2000


Michael Hii and the team at Melbourne Gastro Oesophageal Surgery are extensively involved in research ensuring patients receive the most up to date and effective treatments.


  • GENEVA Collaborators. Global 30-day outcomes after bariatric surgery during the COVID-19 pandemic (GENEVA): an international cohort study. The Lancet Diabetes & Endocrinology. November 27, 2020
  • COVIDSurg Collaborative. Delaying surgery for patients with a previous SARS-CoV-2 infection. Br J Surg. 2020 Sep 25:10.1002/bjs.12050. doi: 10.1002/bjs.12050
  • Badgery H, Read M, Winter NN, Taylor ACF, Hii MW. The role of esophagectomy in the management of Barrett’s esophagus with high grade dysplasia. Ann N Y Acad Sci. 2020 Aug 18. doi: 10.1111/nyas.14439. Online ahead of print.
  • Ooi GJ, Browning A, Hii MW, Read M. Perioperative screening, management and surveillance of Barrett’s esophagus in bariatric surgical patients. Ann N Y Acad Sci. 2020 Aug 13. doi: 10.1111/nyas.14441. Online ahead of print. PMID: 32794237 Review.
  • J Sivakumar, H Sivakumar, M Read, R C F Sinclair, Chris P Snowden, M W Hii. The role of cardiopulmonary exercise testing as a risk assessment tool in patients undergoing oesophagectomy: a systematic review and meta-analysis. Annals of surgical oncology, In Press May 2020
  • Sivesh K Kamarajah, Sheraz R Markar, Pritam Singh, Ewen A Griffiths, the Oesophagogastric Anastomosis Audit Group, The influence of the SARS-CoV-2 pandemic on esophagogastric cancer services: an international survey of esophagogastric surgeons, Diseases of the Esophagus, , doaa054,
  • J Sivakumar, F Alnimri, M A Johnson, S M Ward, L Chong, M W Hii. A health economic analysis of curative-intent gastrectomy for gastric carcinoma and the costs related to post-operative complications. ANZ Journal of Surgery, In Press May 2020.
  • Sivakumar J, Sivakumar H, Hii MWASO Author Reflections: What is the Role of Cardiopulmonary Exercise Testing Prior to Oesophagectomy? Annals of surgical oncology. 2020 May 25. doi: 10.1245/s10434-020-08643-y. Online ahead of print
  • Maharaj AD, Holland JF, Scarborough RO, Evans SM, Ioannou LJ, Brown W, Croagh DG, Pilgrim CHC, Kench JG, Lipton LR, Leong T, McNeil JJ, Nikfarjam M, Aly A, Burton PR, Cashin PA, Chu J, Duong CP, Evans P, Goldstein D, Haydon A, Hii MW, Knowles BPF, Merrett ND, Michael M, Neale RE, Philip J, Porter IWT, Smith M, Spillane J, Tagkalidis PP, Zalcberg JR. The Upper Gastrointestinal Cancer Registry (UGICR): a clinical quality registry to monitor and improve care in upper gastrointestinal cancers. BMJ Open 2019 Sep 30;9(9):e031434. doi: 10.1136/bmjopen-2019-031434.
  • Sivakumar J, Chong L, Ward S, Sutherland TR, Read M, Hii MW. Body Composition Changes Following a Very-Low-Calorie Pre-Operative Diet in Patients Undergoing Bariatric Surgery. Obesity Surgery 2019 Sep 16. doi: 10.1007/s11695-019-04174-y.
  • Chae RP, Johnson MA, Robinson D, Hii MW. Aorto-oesophageal fistula: a late complication of Boerhaave syndrome. BMJ Case Rep 2019 Jul 4;12(7). pii: e228885. doi: 10.1136/bcr-2018-228885.
  • Chen RJ, Sun YQ, Hii MW, Johnson MA, Chondrolipoma of the stomach. BMJ Case Rep. 2019 Mar 15; 12 (3) pii: e228757. doi: 10.1136/bcr-2018-228757.PMID: 30878960
  • Marley L, Navadgi S, Banting S, Fox A, Hii M, Knowles B. Safety, efficacy and compliance of extended thromboprophylaxis in hepatobiliary and upper gastrointestinal surgery: ANZ Journal Surgery (2019) Apr;89(4):357-361. doi: 10.1111/ans.14287. Epub 2018 Jul 30
  • Granek RJ, Hii MW, Ward SM. Major Gastric Haemorrhage After Intragastric Balloon Insertion: Case Report. OBES SURG (2017).
  • Chan KJ., Smithers BM., Hii MW. Giant hiatus hernia and association with gastro-oesophageal reflux: A Review. J Clinical Gastroenterology and Treatment. 2017 3 (2): Open access.
  • Crispin MD, Chan KJ, Winter N, Hii M. Esophageal apoplexy, J Gastrointestinal Surg. 2016 Aug 20 (8): 1535 – 6
  • Edward, KL., Hii, MW., Giandinoto, J., Hennessy, J & Thompson, L (accepted 13-1-16). Personal descriptions of life after bariatric surgery from overweight or obese men, American Journal of Men’s Health. 2016, Feb 4
  • Punwani VV, Ong E, Hii MW. Cervical diverticulitis: a novel complication of a neonatal colonic interposition graft following oesophagectomy. BMJ Case Rep. 2015 Sep 9;2015
  • Walker DM, Hii MW, Skinner CE, Hopkins GH. Roux-en-Y gastric bypass after successful weight loss with laparoscopic adjustable gastric band: rationales and early outcomes in patients of body mass index < 35kg/m2. Surg Obes Relat Dis. 2014 Nov-Dec;10(6):1104-8
  • Cade RJ, Fox AM, Fahy ET, Hii MW. Prevention of Barrett's metaplasia in a human model of duodenogastro-oesophageal reflux. Gastroenterology Insights. 2013, Vol 5, No 1. 12 – 15
  • Hii MW, Hopkins GH. Gastro-gastric herniation. An unusual complication following greater curve plication for the treatment of morbid obesity. Ann R Coll Surg Engl. 2012 Mar;94(2):e76-8.
  • Hii MW, Smithers BM, Gotley DC, Thomas JM, Thomson I, Martin I, Barbour AP. Long term survival after oesophagectomy – the impact of post operative morbidity. Br J Surg. 2012 Jan;100(1):95-104. doi: 10.1002/bjs.8973. Epub 2012 Nov 12
  • Hii MW, Lake AC, Kenfield C, Hopkins GH. Laparoscopic conversion of failed gastric banding to Roux-en-Y gastric bypass. Short-term follow-up and technical considerations. Obes. Surg. 2012, Jan 16
  • Gyorki DE, Clarke NE, Hii MW, Banting SW, Cade RJ. Management of synchronous tumours of the oesophagus and pancreatic head: a novel approach. Ann R Coll Surg Engl. 2011 Sep;93(6): 111-3
  • Hii MW, Gyorki DE, Sakata K, Cade RJ, Banting SW. Endoscopic management of post cholecystectomy biliary fistula. HPB (Oxford). 2011 Oct: 13(10): 669 – 705
  • Barrett K, Hii MW, Cade RJ. Benign gastro colic fistula in a woman presenting with weight loss and intermittent vomiting: a case report. J Med Case Reports. 2011 Jul 14;5(1):313
  • Hii MW, Fox AM, Cade RJ. Laparoscopy-assisted percutaneous-endoscopic gastrostomy tube insertion. ANZ J Surg. 2008. Nov;78(11):1047.
  • Hii MW, Firkin F, MacIsaac A, Yii M. Obstructive prosthetic mitral valve thrombosis in idiopathic hypereosinophilic syndrome: A case report and review of the literature. Journal of Heart Valve Disease 2006. Sep 15(5): 721 – 725.
  • Hii MW, Gibson RN. Role of radiology in the treatment of malignant hilar biliary strictures 1:  Review of the literature. Australas Radiol. 2004 Mar; 48(1): 3 – 13. Review.
  • Hii MW, Gibson RN, Speer AG, Collier NA, Sherson N, Jardine C. The role of radiology in the treatment of malignant hilar biliary strictures 2: 10 years of single institution experience with percutaneous treatment. Australas Radiol. 2003 Dec; 47(4): 393 – 403.

Local Presentations

  • AGITG Meeting Melbourne, 6 – 8 October 2013.
  • Hii MW, Barbour AP. “Multidisciplinary workshop – Oesophagectomy in the elderly”
  • Hii MW “Laparoscopic assisted PEG insertion”
  • Annual General Scientific & Fellowship Meeting, Victoria 2010
  • Hii MW, Cade RJ, Banting SW. “Endoscopic management of minor post cholecystectomy biliary injuries”
  • Peter Ryan Prize for surgical research, St Vincents Hospital 2010
  • Hii MW, Cade RJ, Banting SW. “Endoscopic management of minor post cholecystectomy biliary injuries”
  • General Surgeons Australia, Trainees day, Hobart Tasmania. 30th July 2011
  • Hii MW, “How I do it. Bariatric surgery”
  • Asian Pacific HPBA congress, Melbourne, Australia, 29 September 2011
  • Banting SW, Hii MW, Cade RJ. “Endoscopic management of minor post cholecystectomy biliary injuries”
  • Brisbane Sleeve invitational. 3rd – 4th February, 2012
  • Hii MW, “Sleeve gastrectomy and gastro-oesophageal reflux disease”.
  • ANZGOSA/ SUGGS – Surgeons and the Upper GI Tract. 7rd – 9th September, 2012
  • Hii MW, Smithers BM, Barbour AP. “Long term survival after oesophagectomy – the impact of post-operative morbidity”
  • ANZGOSA/ SUGGS – Surgeons and the Upper GI Tract. 7rd – 9th September, 2012
  • Hii MW, Hopkins GH. “What to do with the failed band – a review.”
  • Melbourne Upper GI Surgeons Meeting, Melbourne Australia, 25th September, 2012
  • Hii MW “Long term survival after oesophagectomy – the impact of post-operative morbidity”

International presentations

  • GSA trainees’ day – Upper GI. Singapore, 5 May 2014.
  • Hii MW – Bariatric surgery, sleeve gastrectomy and gastric bypass
  • World Congress of the international society for diseases of the oesophagus, Kagoshima, Japan, 2 Sep 2010
  • Cade RJ, Fox AM, Hii MW, “The development of neobarrett’s oesophagus after oesophago-gastrectomy. The influence of proton pump inhibitor therapy.” Poster presentation
  • IFSO Meeting Hamburg, Germany, 1 Sep 2011
  • Hii MW, Hopkins GH. “Laparoscopic conversion of vertical-banded-gastroplasty to Roux-en-Y gastric bypass. Short-term follow up”
  • IFSO Meeting Hamburg, Germany, 1 Sep 2011
  • Hii MW, Hopkins GH. “Laparoscopic conversion of vertical-banded-gastroplasty to Roux-en-Y gastric bypass. Technical considerations”
  • IFSO Meeting Hamburg, Germany, 2 Sep 2011
  • Hii MW, Hopkins GH. “Laparoscopic conversion of failed gastric banding to Roux-en-Y gastric bypass. Short-term follow up and technical considerations. Poster presentation.”
  • APGCC Meeting Singapore, Singapore, 6 July 2012
  • Hii MW, Smithers BM, Barbour AP. “Long term survival after oesophagectomy – the impact of post-operative morbidity.”
  • AGITG Meeting Sydney, 6 – 8 September 2012
  • Hii MW, Barbour AP. “Multidisciplinary workshop – A peculiar case of oesophageal cancer”

Current research interests

  • Health related quality of life after oesophageal cancer surgery
  • Outcomes after revision bariatric surgery
  • Effectiveness of hiatal hernia repair
  • Effectiveness of anti-reflux surgery
  • Novel bariatric procedures

Teaching roles

  • Royal Australasian College of Surgeons, ASSET course instructor 2012 – ongoing
  • Melbourne University, Honorary Clinical Lecturer 2012 – ongoing
  • University of Queensland, Senior Lecturer 2012 – ongoing
  • Royal Australasian College of Surgeons, Surgical Convenor, Advanced Surgical Training Program Registrar Lecture Series 2009 – 2010
  • Eastern Health, Surgical Convenor, Surgical registrar teaching program 2009
  • Eastern Health, Lecturer to medical students and interns 2009
  • Department of Anatomy, Melbourne University Medical School, Anatomy, Physiology and Pathology Tutor 2005

Public Hospital Appointments

  • Upper Gastrointestinal Surgeon, St Vincents Health, Melbourne
  • Upper Gastrointestinal Surgeon, The Royal Melbourne Hospital
  • Upper Gastrointestinal Surgeon, Eastern Health, Melbourne (Honorary position)

Professional Associations

  • FRACS - fellow of the Royal Australian College of Surgeons
  • ANZGOSA - Australia and New Zealand Gastro-Oesophageal Surgery Association
  • ANZHPBA - Australia and New Zealand Hepato-Pancreato-Biliary Association
  • OSSANZ - Obesity Surgery Society of Australian and New Zealand
  • ACMAV - Australian Chinese Medical Association of Victoria
  • AMA - Australian Medical Association
  • GSA - General Surgeons Australia


  • FRACS, MBBS, BMedSci, PG DipSurgAnat
  • Oesophago-Gastric, Bariatric and General Surgeon
  • Senior Lecturer, University of Queensland
  • Clinical Lecturer, University of Melbourne

Private Consulting & Operating Locations

Mr Michael Hii

Mailing address:

Suite 301, Level 3
100 Victoria Parade
East Melbourne,
Victoria, 3002
Email: [javascript protected email address]

After hours message service
03 9387 1000