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Dr Gerhard Prager

General surgeon, Gastroenterologist

28 years of experience

Dr. Gerhard Prager is a leading bariatric surgeon. He has performed over 3,000 bariatric operations using advanced techniques such as gastric bypass, sleeve gastrectomy, and biliopancreatic diversion. He serves as Chairman of the Scientific Advisory Board for Bariatric Surgery at IFSO. Dr. Prager has played a key role in shaping international standards in obesity surgery.

Dr. Prager’s practice uses a multidisciplinary approach. He works closely with endocrinologists, psychologists, nutritionists, and other specialists to provide complete patient care. He is active in research, education, and advanced surgical training. Dr. Prager has trained surgeons from more than 50 countries.

He is accredited by the International Federation for the Surgery of Obesity and Metabolic Disorders and the American Society for Metabolic and Bariatric Surgery.

Certification & Accreditation

International Federation of Surgery for Obesity and Metabolic Disorders
International Federation of Surgery for Obesity and Metabolic Disorders
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American Society for Metabolic and Bariatric Surgery
American Society for Metabolic and Bariatric Surgery
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Location

Wiener Privatklinik ,Vienna , Austria
4.6149 reviews

Professor Prager is the outstanding surgeon, specialist in the field of bariatrics. The collaboration of the professor with leading experts in his field provides his patients with optimal preoperative and postoperative care. His professional network includes endocrinologists, psychologists, therapists, nutritionists, sports therapists, pediatricians and teenage psychologists to provide comprehensive treatment for diseases. In addition to this, Professor Prager pays great attention to research, education and advanced training. His main research priorities are endocrine surgery, obesity and surgical treatment for diabetes. As chairman of the scientific The Advisory Board for Bariatric Surgery at IFSO, the Global Association for Metabolic and Bariatric Surgery, is actively involved in an international platform operating at the highest level towards the development and sustainable improvement of surgical procedures covering obesity. In addition to his continuing education, Prager is very worried about the education and training of younger colleagues, he conducts a number of continuing education courses in minimally invasive and bariatric surgery with the participation of students from Austria and abroad (more than 50 countries). In addition, the professor trains other surgeons both in Austria and abroad.

Professional activity: 

• 1992 Medical Degree 

• 1993 Field Service (Army Anesthesiologist) 

• 1997 Assistant physician at the outdoor K. H. Mistelbach, Department of Surgery (Board of Directors Univ. Prof. Dr. E. Schima) 

• 1997 Guest Semester (Surgical Endocrinology) at Univ. Professor Dr. B. Niederle at the Clinical Department of General Surgery 

• 1998 Assistant Doctor of Medical Sciences K. H. Mistelbach, Department of Surgery (Board of Directors Univ. Prof. Dr. E. Schima) 

• 1998 Assistant Physician at the Clinical Department of General Surgery, University Hospital of Surgery, Vienna 

• 1999 Awarded with a specialist degree in surgery (Austrian Medical Association). 

• 2003 Appointed Senior Physician at the Vienna University Surgery Clinic. Awarded with a license to teach surgery - habilitation 

• 2004 University lecturer 

• 2004 Head of the "Obesity Surgery" working group at the University Clinic of Surgery, Department of General Surgery 

• 2005 Team Leader, Minimally Invasive Surgery, University Hospital of Surgery, Department of General Surgery 

• 2006 Member of the Board of the Austrian Society of Bariatric Surgery 

• 2008 Member of the Board of the Austrian Society for Obesity

 • 2011 Chairman of the Scientific Advisory Board of the International Federation of Surgery for Obesity and Metabolic Diseases (IFSO) 

• 2012 Member of the board of the working group on minimally invasive surgery of the Austrian Society of Surgery 

Membership in organizations: • International Federation of Surgery for Obesity and Metabolic Disorders IFSO • ASMBS American Society for Metabolic and Bariatric Surgery • ÖGC Austrian Society of Surgery • AMIC Surgical Working Group on Minimally Invasive Surgery • Austrian Obesity Association • Austrian Society of Bariatric Surgery He has performed more than 3,000 operations, experience various methods of surgery for obesity, for example: gastric bypass (gastric bypass of Y-Roux, gastric bypass of omega loops), adjustable gastric bypass, gastric banding, sleeve gastrectomy, biliopancreatic diversion, duodenal switch, gastric balloon implantation duastenosis anastomosis and much more.

 

 

Patient reviews

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Client
Jun 22, 2025
Knee Arthroscopy

My opinion is that, even though it's a business the core of it is the desire to help people who want to regain their health as much as possible back, the emotional intelligence and a necessary level ... Read more

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Anonymous
Sep 26, 2019
Pancreatic cancer

the trip to the clinic was usually. I got advice, paid a doctor, translator and intermediary, did not receive receipts for these payments. But I don’t understand what the bonus actually consisted of, ... Read more

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Krystyna Chelombitko
Jun 19, 2025
Hand surgery

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Anonymous
Mar 28, 2024
Online Consultation with Oncologist

I had a terrible experience. Dr. Zielinski was dismissive and rushed me, he hasn't answered my questions and he asked me for more tests in order to speak about treatment plans when I was told previous... Read more

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Ирина
Oct 25, 2022
Consultation rheumatologist

I was very satisfied with the level of the doctor's consultation, I hope the treatment will also be effective, but the organization wants the best. I've been waiting for a written doctor's... Read more

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Karlo Tomašević
Nov 11, 2023
Consultation with a cardiologist

From the very beginning, things went smoothly, clearly and quickly. Very pleasant conversation, no waiting, clear information about payment and with, the outcome exactly as agreed. A great advantage a... Read more

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Anonymous
Apr 17, 2025
Consultation with a neurologist

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Margaret E Estes
Oct 5, 2024
Consultation with an orthopedist (traumatologist)

I’m so thankful for the help to book a medical appointment after I took a fall on my trip. This website was truly amazing to get me set up to see a great doctor! It was affordable too.

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Vasile Lupan
Nov 12, 2018
Myasthenia

Hi my name is vasile lupan date of birth 01 01 1991 and i have big problem with my shoulder and arm no have power atrofy muscular. In date 13.08.2018 i visit privit clinik viena me belive there my pro... Read more

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Nikolay Lagun
Mar 28, 2025
Blepharoplasty (Eyelid correction)

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