Bariatric Surgeon

"The Sleeve"- 65-70% weight loss

Obesity is a chronic and devastating disease that diets alone rarely, if ever, produce any significant results.

Dr Jorgensen is committed to providing personalised, patient-centric care that enables patients to lose 65-70% of excess body weight on average.

His all-inclusive service provides all medical, nursing and dietitian consults for two years post-surgery.
Dr Jorgensen also holds complimentary patient seminars and video support which feature practical patient education topics to help you on your weight loss journey.

Meet Dr Jorgensen

Dr Jorgensen has performed more than 10,000 surgical procedures.

He has a special interest in hernia procedures as well as game-changing bariatric procedures like “The Sleeve” which is now the fastest-growing weight loss surgery in the world.

Dr Jorgensen performed Sydney’s first keyhole sleeve and gastric bypass surgery and is recognised as a Master Surgeon of Metabolic & Bariatric Surgery. This means his office, program and outcomes are validated to international best practice benchmarks.  He is also a regular media commentator. 

Bariatric Surgery for diabetes

Dr Jorgensen frequently treats multiple patients in the same family, with the same genetic predisposition to diabetes and obesity. This is otherwise known as “diabesity”.

An international coalition of  45 medical organisations recently agreed that surgery is now a standard treatment in patients with morbid obesity who are living with Type II diabetes.

This surgical pathway represents the biggest step forward in the treatment of diabetes in nearly 100 years.  Find answers to the most asked questions on bariatric surgery for diabetes. 

Complimentary Patient Weight Loss Seminar

Due to Coronavirus we have postponed this seminar until further notice.
Please email us and we will contact you with the new date in the next few weeks.

Want a taste of our seminars? Click here for the patient stories and other seminar videos.



The number of overweight or obese Australians by 2025

International health organisations that now endorse bariatric surgery as standard treatment for diabetes

St George Private is Australia's No 1 bariatric hospital by volume

Weight Loss Surgeon Kogarah

Dr John Jorgensen is one of Australia’s most experienced Upper GI, General and Bariatric Surgeons.

He is Director of Bariatric Surgical Services at St George Private Hospital, Australia’s highest volume bariatric hospital and the first  hospital in Australia to be recognised internationally as a Bariatric Centre of  Excellence.

Dr Jorgensen  recognises bariatric surgery as a new paradigm in the treatment of patients with Type II diabetes; with many patients either completely resolving their diabetes within days or weeks of surgery, or significantly reducing their medication.

In The News

Dr John Jorgensen recently featured in Mamamia story

Dr John Jorgensen recently featured on SBS NewsClick here to watch

Disclaimer: All surgical results are individual. Speak to your doctor to see if bariatric surgery is suitable for you.

Your Sleeve Surgery Treatment Journey


During your first consultation you will be first seen by a our nurse practitioner Silvia, who will take an extensive clinical history.

During your first consult your bloods will also be taken and Dr Jorgensen will discuss any co-existing heath conditions you may have.

As there is no one-size-fits-all approach for bariatric surgery, Dr Jorgensen will also see you in your first consult to weigh up the pros and cons of each bariatric procedure, ensuring your operation is customised to your health, personality and lifestyle.

You will then have another follow up with Dr Jorgensen and dietitian before surgery.


On the day of your surgery, when you wake up there will be a “patient controlled analgesic” (PCA) pump connected to your IV drip.

This works very well for pain control and is usually removed the next day and oral analgesia is given.

Most people can sit up, mobilise and move their legs a few hours after the operation.

The day of surgery you will start a “free fluid” diet including yoghurt, custard, milk, soup and diet cordial.

You will probably be discharged on Day Two in hospital and will be required to take  medications with you when you leave.


After surgery you will be given a complimentary copy of the CSIRO Low-Carb Diet Book, a scientifically proven lifestyle guide for losing weight and improving health, with 80 recipes and weekly meal plans.

You will also be reviewed by Dr Jorgensen at 3 weeks, and come back to rooms for reviews at 3 months, 6 months, 9 months and 12 months post-surgery.

All bariatric-related consults post-surgery with Dr Jorgensen, his dietitian and his nurse will be cost-free to the patient for two years from date of surgery. These consults are unlimited and are included in Dr Jorgensen’s one-off surgical service fee. 

Click here for costs and other FAQs.

Sleeve v Bypass v Band - which life-changing surgery is right for you?

Contact us today!

Call us on 02 9553 7288.