Prof. Dr. Hakan Demirci
Prof. Dr.

Hakan
Demirci

Gastroenterology and Hepatology Specialist

  • Specialty Gastroenterology and Hepatology Specialist
  • Experience 15+ Years
  • Private Clinic Prof. Dr. Hakan Demirci Gastroenterology Clinic

About Me

Completed
Projects
Happy
Patients
Awards

My medical journey began in 1997 when I was accepted to the Gülhane Military Medical Academy (GATA) Medical School. I passed the Medical Specialization Exam (TUS) in 2006 and began my Internal Medicine residency at GATA Haydarpaşa Training Hospital. Between 2010-2011, I worked as an Internal Medicine specialist at the Presidential Campus. In 2011, I passed the Medical Subspecialty Exam (YDUS) and began my Gastroenterology subspecialty training at GATA Ankara.

In 2014, I was appointed as a Gastroenterology specialist to the GATA Ankara Gastroenterology Clinic. During this time, I worked particularly in the fields of microbiota, inflammatory bowel diseases (Ulcerative Colitis & Crohn's Disease), stem cell treatments, obesity, interventional endoscopic procedures, and functional medicine. I received "best oral and poster first place awards" at conferences organized by the Turkish Liver Research Association and the Turkish Gastroenterology Association. During the same period, I was awarded the "scientific work encouragement, internal sciences third place award" by GATA. In 2017, I successfully passed the Associate Professorship exam and received the title of Associate Professor Dr.

I have approximately 100 publications in international and national journals. I also authored book chapters. I served as a principal investigator in international comprehensive clinical research, particularly in phase 3 studies for the treatment of inflammatory bowel diseases.

In 2023, I was appointed to the Professor position at Fenerbahçe University. After working at Medicana Kadıköy Hospital from 2022-2025, I started accepting patients at my own clinic in December 2025.

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Resume

Internal Medicine and Gastroenterology Specialist

Medical Areas of Interest
Celiac Disease
100%
Gastroscopy
100%
ERCP
100%
Colonoscopy
100%
PEG
100%
Crohn's Disease
100%
Chronic Hepatitis
100%
Education
1997 - 2003
Medical Education
Gülhane Military Medical Academy Medical School - ANKARA
2006 - 2010
Medical Specialization Training
Gülhane Military Medical Academy Haydarpaşa Training Hospital – ISTANBUL
2011 - 2014
Medical Subspecialty Training
Gülhane Military Medical Academy Medical School Gastroenterology Department - ANKARA
Awards
2013 - Best Oral Presentation
Turkish Liver Research Association
2014 - Best Poster First Place Award
Turkish Gastroenterology Association
2014 - Scientific Work Encouragement
Internal Sciences Third Place Award - GATA
Experience
December 2025 - Present
Prof. Dr. Hakan Demirci Gastroenterology Clinic
Gastroenterology Specialist
2022 - 2025
Medicana Kadıköy Hospital
Gastroenterology Specialist
2018 - 2022
VM Medical Park Pendik Hospital
Gastroenterology Specialist
2017 - 2018
Sultan Abdülhamid Training and Research Hospital
Gastroenterology Specialist
2014 - 2017
GATA - ANKARA
Gastroenterology Specialist
2011 - 2014
GATA - ANKARA
Subspecialty Training (Gastroenterology)
2010 - 2011
ANKARA
Internal Medicine Specialist, Presidential Type A Dispensary
2006 - 2010
GATA Haydarpaşa Training Hospital Internal Medicine - Istanbul
Resident
2004 - 2006
MARDIN
Infirmary Physician 70th Mech. Bde. Command
2003 - 2004
Ankara
Intern Physician Gülhane Military Medical Academy
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Health Guide

You can read health articles prepared by Prof. Dr. Hakan Demirci here.

Stomach Cancer
February 24, 2024

Stomach Cancer

What is Stomach Cancer? Stomach cancer is a type of cancer that occurs as a result of abnormal growth and multiplication of stomach cells. The stomach, one of the digestive system organs, stores and digests food. Stomach cancer usually originates from mucosal cells and can spread to surrounding tissues in advanced stages.

Obesity
February 21, 2024

Obesity

Obesity has become a rapidly increasing health problem worldwide. Developing technology, changing lifestyles, and irregular eating habits cause many people to face weight problems. There are various methods to prevent and treat the negative effects of obesity on health. In this article, we will focus on methods such as medications, gastric botox, and gastric balloon used in the treatment of obesity.

Gallbladder
February 20, 2024

Gallbladder Diseases

Gallbladder diseases, which closely concern gastroenterology patients, are one of the important problems affecting digestive system health.

What are Gallbladder Diseases? The gallbladder is an organ that stores and concentrates bile fluid produced by the liver. Bile is an important fluid that helps digest fats in the digestive system. Gallbladder diseases refer to various problems that occur in this organ. The most common gallbladder diseases include gallstones, gallbladder inflammation (cholecystitis), and gallbladder polyps.

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