Dr Mark Gately – Surgeon

Obesity surgery or Bariatric Surgery involves procedures designed specifically for severely obese individuals. This type of surgery is used when diet and exercise has not worked previously in controlling the person’s weight.
Consulting at Newcastle Obesity Surgery, Dr Mark Gately can assist you by offering a comprehensive range of options to assist you in a managing your weight and improving your overall health.

If you think you may need surgical assistance with your weight loss, contact us at Newcastle Obesity Surgery and attend one of our free seminars , or, check out our BMI Calculator to see if you might be the type of person that can benefit from surgery.


Patients suffering from morbid obesity and related comorbid conditions can be challenging to manage in the constrains of general practice. Dr Gately offers multi-modal management of the obese patient and is committed to the multidisciplinary and collaborative management of these patients.

Bariatric and metabolic surgery is an effective, safe and robus mode of management for patients with Class II or III obesity ( BMI >35 and above ). Not only does B&MSx have a significant impact on weight, but the co-morbid conditions that are associated with the obesity can often be managed much more effectively following surgery.

At NOS Dr Gately and the team aim to work closely with GPs, physicians, dieticians, and psychologists to achieve the best outcome for your patients.

If you would like more information regarding the current role of bariatric and metabolic surgery, and how this will be benefit clients at your practice, Dr Gately offers free GP education sessions and is happy to coordinate this with your practice. Please contact us at NOS to arrange a time.


Dr Mark Gately is a Specialist General surgeon, trained in the Newcastle and Hunter – New England area, rotating through the John Hunter, Maitland, Tamworth and Port Macquarie hospitals. After obtaining his Royal Australasian College of Surgeons Fellowship, he travelled to London, UK, for further training and experience as an international fellow and then Consultant surgeon in Laparoscopic Bariatric & Benign Upper Gastrointestinal surgery at Chelsea & Westminster NHS Hospital Trust, one of the UK’s centres of excellence for Bariatric Surgery.

During Dr Gately’s time in London he gained extensive experience in multiple methods of bariatric care including gastric balloons / lap banding / sleeve / bypass and revisional surgery.

Having recently moved back to Newcastle, Dr Gately is focusing on his Bariatric surgical practice in the Newcastle and Maitland areas.

He is a Fellow of the Royal Australasian College of Surgeons and a member of OSSANZ and ASMBS.

Mark received a Medical Science degree from UNSW before completing his Bachelor of Medicine at Sydney University.

Dr Gately is committed to teaching and has been employed by the University of Newcastle as a surgical tutor. Whilst working in the UK he was an assessor for the Imperial College School of Medicine and was actively involved in training surgical residents and registrars.

Dr Gately operates at Lake Macquarie Private Hospital, Lingard Private Hospital and Maitland Private and Public Hospitals.

Dr Gately consults in rooms in both Charlestown and Maitland Private Hospital consultation suites.


NOS and Dr Mark Gately insist on using specialist bariatric dieticians as key team members in the bariatric surgery pathway. Our dieticians are incredibly dedicated to our patients, and are located on site at NOS and readily accessible for questions or concerns you may have both before and after surgery.

Support Staff

Our secretarial and support staff are extremely experienced in dealing with patients at different stages of their journey through bariatric surgery.