Univ.-Prof. Dr. Gerhard Prager

years of experience

Univ.-Prof. Dr. Gerhard Prager

Specialization: General surgeon
29 years of experience
accreditations:
Speaks:
German, English
Workplace: Austria, Vienna, Wiener Privatklinik
University Professor of Bariatric Surgery, Medical University of Vienna · former World President of the IFSO · Head of the Obesity Outpatient Clinic, Vienna General Hospital (AKH)
Univ.-Prof. Dr. Gerhard Prager is one of the world’s leading obesity surgeons and a former World President of the IFSO. With more than 9,900 procedures performed and over 435 scientific publications, he ranks among the international leaders in bariatric and metabolic surgery. He graduated from the University of Vienna and trained at the Medical University of Vienna, focusing on minimally invasive and laparoscopic techniques.

He serves as a senior consultant at Wiener Privatklinik, performing advanced procedures for obesity, reflux disease, hernias, and gastrointestinal cancers. His academic contributions include extensive research on metabolic regulation and bariatric surgery outcomes, and he has been a keynote speaker at international conferences.

4.6

Excellent score

20 patient verified reviews

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Patient reviews

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1-5 of 20 reviews

Anonymous • CT scan of the whole body

Slovenia

Jun 2, 2026

Verified review.

Given how positive my experience was, I would definitely recommend this clinic to anyone needing similar care

My biggest concern was the anxiety around getting a full-body CT scan, but that worry disappeared quickly. From the moment I walked in, the staff made me feel comfortable and explained every single step, which was incredibly reassuring. The clinic was clean and organized, and the medical team was both professional and genuinely kind throughout the entire process. Everything went smoothly. Given how positive my experience was, I would definitely recommend this clinic to anyone needing similar care. I'm grateful for how they handled my case with such efficiency and compassion.

Nothing

Anonymous • PET/CT

Ukraine

May 15, 2026

Verified review.

My experience has been entirely negative. The treatment prescribed did not follow the standard protocol for this condition. Under this treatment, the condition only worsened. I was given information about the most effective treatment currently used worldwide. I never received the doctor’s conclusion following the consultation, even though I asked for it several times. And on top of everything else, judging by the result, it wasn’t worth €500. A treatment that doesn’t work, with no documentation whatsoever. Just a conversation with a professor to whom you have to ask a thousand questions and figure out the treatment options for your condition yourself, because he offers nothing and explains nothing.

Speed of service delivery

The treatment recommended by the professor at the Austrian clinic was completely at odds with standard treatment protocols I never received the discharge summary, even though I had asked for it several times

Tetyana • Metastases in the liver

Ukraine

Apr 19, 2026

Verified review.

Anonymous • Male Check-up

Poland

Apr 3, 2026

Verified review.

I’m glad I chose to come here

It was the right decision. Right from the start, I felt that they were looking after me, from the organisation of the trip right through to the clinic itself. The staff were incredibly attentive and supportive every step of the way. Special thanks to the doctor, who explained everything very patiently and clearly, dispelling any doubts I had. The clinic is clean and modern. The examination itself went smoothly and without any unnecessary stress. I’m glad I chose to come here.

Very nice admin and over qualification doctor. I hope my dream will come true and I do my plastic surgery

Anonymous • Otoplasty (ear surgery)

Austria

Oct 27, 2025

Verified review.

It was performed by the very best doctor, Igor Pona

I had an operation on 16 October 2025. It was performed by the very best doctor, Igor Pona. The procedure was an otoplasty. I really liked the clinic where the operation took place.The clinic’s medical staff were always there for me and kept asking how I was feeling. I am also very grateful to the staff at Bookimed for arranging transport. They took me to the clinic for the operation and brought me home afterwards.I am very pleased with the results of my surgery, three months on. I am very grateful to Dr Egor Pona, and indeed to the entire staff at the Bookimed clinic.

I had an otoplasty in October 2025. It’s been three months and a week, and the results are fantastic. I am delighted with the result. I would like to thank Bookimed Clinic. I specifically asked the clinic staff for a Russian-speaking doctor; the clinic replied the very next day and informed me that they had a Russian-speaking doctor available. I was given an appointment with the doctor about a week later. The staff at Bookimed Clinic were in constant contact with me. They were incredibly supportive. They kept asking how I was getting on and how I was feeling. They told me not to worry and that everything would be fine.

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Certifications & accreditations

International Federation of Surgery for Obesity and Metabolic Disorders

American Society for Metabolic and Bariatric Surgery

Austrian Society of Surgery (ÖGCH)

European Association for Endoscopic Surgery (EAES)

Qualifications

Univ.-Prof. Dr. Gerhard Prager is University Professor of Bariatric Surgery at the Medical University of Vienna and one of Europe’s most renowned obesity surgeons. As former World President of the IFSO (International Federation for the Surgery of Obesity and Metabolic Disorders), he has played a leading role in shaping the global standards of bariatric and metabolic surgery; he presided over the IFSO World Congress with more than 4,000 participants from 72 countries.

He studied medicine at the University of Vienna, graduating in the 1990s, and began his surgical training at the Medical University of Vienna, where he developed an early interest in minimally invasive and laparoscopic techniques. His commitment to improving the health and quality of life of patients with obesity and gastrointestinal diseases has guided his entire professional path.

Since 2004 he has headed the Obesity Outpatient Clinic at Vienna General Hospital (AKH), treating patients from Austria and abroad. His expertise spans the full range of modern bariatric surgery – from gastric bypass and sleeve gastrectomy to one-anastomosis (omega-loop) bypass, SADI-S and complex revisional procedures – as well as endocrine and gastrointestinal surgery.

1992 – Doctor of Medicine (Dr. med. univ.), Medical University of Vienna
1999 – Board-certified Surgeon
2003 – Habilitation; Senior Consultant, Vienna General Hospital (AKH)
2004 – Head of the Obesity Outpatient Clinic, AKH Vienna
2018 – President, IFSO European Chapter
2021 – University Professor of Bariatric Surgery, Medical University of Vienna
2023/2024 – World President of the IFSO
Today – Immediate Past President of the IFSO

Prof. Prager’s scientific work has focused on metabolic regulation, hormonal mechanisms in obesity, and long-term outcomes of bariatric surgery. He has published extensively in leading medical journals and has been a keynote speaker at numerous international conferences.

A founding member of several European bariatric surgery associations, he has helped develop guidelines for obesity treatment and multidisciplinary patient care. Known for his surgical precision, academic excellence, and empathetic approach, Prof. Prager continues to advance modern metabolic and gastrointestinal surgery, helping patients achieve lasting health improvements through innovative and individualized care.

With more than 9,900 procedures performed, over 435 scientific publications and the training of surgeons from more than 50 countries, Prof. Prager combines scientific excellence with individual, compassionate patient care at the highest international level.

Univ.-Prof. Dr. Gerhard Prager

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