Selçuk University Faculty of Medicine
Konya — Medical Doctor (MD)
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Assoc. Prof. Hacı Hasan Abuoğlu is an Istanbul-based general surgery specialist who has performed over 10,000 laparoscopic bariatric procedures and completed advanced hepatopancreatobiliary surgery training at the Cleveland Clinic (USA). He is a member of IFSO.

Assoc. Prof. Dr. Hacı Hasan Abuoğlu is an Associate Professor of General Surgery, born in Konya, Türkiye (1977). He graduated from Selçuk University Faculty of Medicine (2000) and completed his General Surgery specialty training at Medeniyet University Göztepe Training and Research Hospital in Istanbul (2009). He currently practices bariatric and metabolic surgery in Istanbul.
In 2012, he joined the liver transplantation team at the University of Health Sciences Haydarpaşa Numune Training and Research Hospital and subsequently served as the responsible director of the hospital's Organ Transplantation Department. During these years he was actively involved in hepatopancreatobiliary surgery (covering the liver, pancreas, and biliary tract), gastric and colon tumor surgery, adrenal surgery, and hernia surgery. In 2014, he worked for six months as a research fellow at the Cleveland Clinic Hepatopancreatobiliary Surgery and Liver Transplantation Service in the United States, and during the same period took part in renal transplantation procedures with the kidney transplant team.
In the following years he focused his clinical practice on bariatric and metabolic surgery, applying the advanced laparoscopic experience gained during his earlier work to this field. In 2019, while serving at Haydarpaşa Numune Training and Research Hospital, he was awarded the title of Associate Professor of General Surgery by the Turkish Interuniversity Council.
His clinical approach is built on multidisciplinary collaboration. Patient evaluation is carried out through a team process that includes endocrinology, nutrition, and psychology support; surgical decisions are made after a thorough assessment of the patient's full metabolic and clinical profile, and long-term follow-up is maintained after surgery. Alongside his clinical work, he continues his academic activities, participating in national and international scientific meetings and contributing to publications in international journals. He currently practices at his private office and affiliated hospitals in Istanbul. He speaks Turkish, English, and German.
An academic and clinical journey spanning more than three decades
Konya — Medical Doctor (MD)
Medeniyet University Göztepe Training and Research Hospital, Istanbul
Specialist title awarded upon completion of residency
Chief Physician — compulsory state service
Liver Transplantation team; Director of Organ Transplantation Department
Six-month research fellowship in Hepatopancreatobiliary Surgery and Liver Transplantation
Title awarded by the Turkish Interuniversity Council while serving at Haydarpaşa Numune Training and Research Hospital
Private practice and affiliated hospitals in Istanbul
Personalized procedure selection based on each patient's BMI, comorbidities and lifestyle.
Continuous professional development at international standards.
Active membership in national and international professional organizations.
Scientific articles published in international peer-reviewed journals — Google Scholar verified.
31
International Articles
9
National Articles
14
Scientific Presentations
2
Thesis Supervision
29(2):729-734
A professional healthcare team by your side from pre-surgery to post-surgery at every stage.
01General Surgeon
General Surgery Specialist, Bariatric and Metabolic Surgery. 25+ years of experience, 10,000+ laparoscopic procedures, Cleveland Clinic-trained.
02Coordinator
End-to-end coordination of international patient relations, transfers, accommodation and the entire treatment journey.
03Nutritionist
Pre-surgery nutrition preparation and personalized post-op diet program with one-year follow-up.
04Interpreter
Full-time interpretation support for patients from 30+ countries before, during and after surgery.
Assoc. Prof. Dr. Hacı Hasan Abuoğlu was born in Konya in 1977 and practices as a General Surgery specialist in Istanbul. In 2019 he received the title of Associate Professor of General Surgery from the Turkish Interuniversity Council. His clinical practice is focused on bariatric and metabolic surgery, and he has performed more than 10,000 laparoscopic operations over the course of his career. He is a member of the Turkish Surgical Association (TCD), the Bariatric and Metabolic Surgery Association of Türkiye (BMCD), and the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO), among other national and international societies.
His clinical practice is focused on bariatric and metabolic surgery. The established surgical techniques he applies include sleeve gastrectomy, Roux-en-Y gastric bypass, mini gastric bypass, metabolic surgery procedures for type 2 diabetes, and revisional bariatric surgery. Earlier in his career he also actively worked in advanced laparoscopic surgery, hepatopancreatobiliary surgery, gastric and colon tumor surgery, adrenal surgery, and hernia surgery.
He graduated from Selçuk University Faculty of Medicine in 2000 and received the title of General Surgery Specialist in 2009. Over a surgical career spanning more than two decades, he completed his residency at Medeniyet University Göztepe Training and Research Hospital, worked in transplantation and advanced abdominal surgery at Haydarpaşa Numune Training and Research Hospital, and subsequently focused on bariatric and metabolic surgery. To date he has performed more than 10,000 laparoscopic operations and has contributed to 56 scientific publications in national and international journals.
Yes. In 2014, he spent six months as a research fellow at the Cleveland Clinic Hepatopancreatobiliary Surgery and Liver Transplantation Service in the United States. During the same period, he also worked with the renal transplantation team and took part in kidney transplantation procedures.
In 2019, while serving at Haydarpaşa Numune Training and Research Hospital, he was awarded the title of Associate Professor of General Surgery by the Turkish Interuniversity Council. The title of Associate Professor is an official academic qualification granted after evaluation of scientific publications and academic work.
Each patient's process begins with a detailed initial evaluation. A multidisciplinary team approach is followed, including support from endocrinology, nutrition, and psychology. Surgical decisions are made jointly after evaluating the patient's full metabolic and clinical profile, and long-term follow-up is maintained after surgery. Outcomes of any surgical or interventional procedure may vary from person to person; a detailed consultation with your physician is recommended before the procedure.
For detailed information about bariatric and metabolic surgery procedures, you may use the contact channels below. Initial consultations for international patients can be arranged remotely via video call or WhatsApp.

Assoc. Prof. Dr. Hacı Hasan Abuoğlu
Associate Professor of General Surgery
Real patient reviews verified through Trustpilot and Google.
I cannot fault this clinic. From start to finish it was a smooth experience. The doctor and team made me feel relaxed even though I was on my own. I would consider further consultations with them.
Lesley Coban
Had my gastric sleeve two years ago. Great hospital and a thoughtful team that genuinely care about their patients.
Stephanie Kettle
The whole experience was well organised and the team was very supportive. The dietitians and doctors gave clear attention throughout. The clinic atmosphere was welcoming and professional.
Sneja Beckman
I had the chance to be among true professionals. I have words to describe their attention and dedication. Recommended for anyone considering bariatric surgery in Istanbul.
Ivone Diogo
I had my gastric sleeve at the clinic in Istanbul, having travelled from Germany. From the welcome to the hotel arrangements, hospital and clinic — every step was well organised.
Sohail
From arriving at the hospital to the procedure, every step was explained clearly. At one point I felt anxious, but the team helped me understand the process and put my mind at ease. A truly professional environment.
Ibe Ijeoma
Very caring, professional and efficient. The whole team — including translator Tuncay, who was there for us throughout — was attentive. Dr Hasan was caring and professional, and Elif and the dietitian team listened and explained everything clearly.
Emma
From the moment they greeted me at the door, the warm and sincere attitude began. Incredible professionalism and, most importantly, genuine care for patients.
Elena Miteva
All the staff were wonderful. Caring and a very clean, quiet environment. The doctors and nurses were attentive, and the coordinators were always happy to assist with any questions. I went to Istanbul alone and was looked after well.
Donna Kane
A very big thank you to Dr. Hasan Abuoğlu and to interpreter Elife. The doctor and the whole team were professional and answered every question. The organisation, the transfers and the quick responses were all handled well.
Yllka
Doctor Hasan is professional and caring — I felt at ease. Translator Elife helped my communication greatly, and dietitian Elif was always ready to explain and answer my questions.
Idah Okal
My experience at the clinic in Istanbul was very pleasant. Professional doctors, careful service and detailed guidance on after-care.
Katarzyna
I am happy with my experience. My translator was helpful at all times. A welcoming hospital — thank you for everything.
Aroma Sahiti
We travelled from Madrid for a sleeve gastrectomy. The clinic team is professional. The doctor visited every day and the team paid careful attention to our questions.
Joselin Granizo
I travelled to Türkiye in March. I was unsure what to expect, but I was glad to have chosen this clinic. The whole team was professional — the translator Burak, the nurses, the medical team and the dietitian.
Manoli Jiménez
I cannot fault this clinic. From start to finish it was a smooth experience. The doctor and team made me feel relaxed even though I was on my own. I would consider further consultations with them.
Lesley Coban
Had my gastric sleeve two years ago. Great hospital and a thoughtful team that genuinely care about their patients.
Stephanie Kettle
The whole experience was well organised and the team was very supportive. The dietitians and doctors gave clear attention throughout. The clinic atmosphere was welcoming and professional.
Sneja Beckman
I had the chance to be among true professionals. I have words to describe their attention and dedication. Recommended for anyone considering bariatric surgery in Istanbul.
Ivone Diogo
I had my gastric sleeve at the clinic in Istanbul, having travelled from Germany. From the welcome to the hotel arrangements, hospital and clinic — every step was well organised.
Sohail
From arriving at the hospital to the procedure, every step was explained clearly. At one point I felt anxious, but the team helped me understand the process and put my mind at ease. A truly professional environment.
Ibe Ijeoma
Very caring, professional and efficient. The whole team — including translator Tuncay, who was there for us throughout — was attentive. Dr Hasan was caring and professional, and Elif and the dietitian team listened and explained everything clearly.
Emma
From the moment they greeted me at the door, the warm and sincere attitude began. Incredible professionalism and, most importantly, genuine care for patients.
Elena Miteva