Best Gastroscopy with biopsy doctors: TOP 113 doctors

The doctor graduated from Cerrahpaşa School of Medicine, Istanbul University in 2000 and completed residency in Internal Medicine at Ankara University by 2004, earning the title of Internist. With a prolific academic career, the doctor has contributed 19 international papers, 6 local papers, and presented at 25 local and international congresses. The doctor received the Best Verbal Presentation and Best Poster Awards at the 7th International Gastrointestinal System Cancers Congress.

Specializing in advanced endoscopic procedures, the doctor focuses on treatments such as POEM for achalasia, ESD for early-stage gastrointestinal cancers, ERCP for bile duct treatment, Z-POEM for Zenker’s Diverticulum, and G-POEM for gastroparesis.

Gastroenterologist

The doctor graduated from Istanbul University, Istanbul Medicine Faculty in 2007 and completed a specialization in surgery at Sisli Etfal Education and Research Hospital in 2013. Further advancing their expertise, they joined the General Surgery Clinic at Istanbul Okan University in 2020.

With extensive experience in various medical institutions, the doctor has worked at Sisli Hamidiye Etfal Training and Research Hospital, Siverek State Hospital, and Anadolu Medical Center. They are a member of several prestigious organizations, including the European Society of Coloproctology and the Turkish Surgical Society.

The doctor holds numerous certifications, such as the Turkish Surgical Association Qualification Certificate and has completed advanced courses in endoscopy, bariatric surgery, and laser techniques for hemorrhoidal diseases.

Op. Dr. Merve Karlı has completed her medical education at Eskişehir Osmangazi University Faculty of Medicine, Bakırköy. She received her specialist training at Sadi Konuk Training and Research Hospital.

She has performed over 1000 operations in the fields of benign anorectal diseases, laparoscopic / open hernia surgery, breast diseases, trauma and emergency surgery. She has certifications on endoscopic procedures.

MEDICAL INTERESTS

• Breast Diseases
• Benign Anorectal Diseases
• Laparoscopic and Open Hernia Surgery
• Endoscopy (Gastroscopy, Colonoscopy, PEG Insertion)

Prof. Dr. Engin Tutar was born in Istanbul in 1964. He completed his primary and secondary education at Istanbul Erkek Lisesi between 1975 and 1982, and graduated from Istanbul University Istanbul Faculty of Medicine in 1988. In December of the same year, he started his specialization in the Department of Pediatrics at Dr. Lütfi Kırdar Kartal Training and Research Hospital, becoming a specialist in Pediatrics in February 1993. He completed his subspecialty training in Pediatric Gastroenterology, Hepatology, and Nutrition at Marmara University Faculty of Medicine, becoming a subspecialist in 2006. He served as the Assistant Chief Physician and Acting Chief Physician at the 2nd Pediatric Clinic of Dr. Lütfi Kırdar Kartal Training and Research Hospital between 2010 and 2012. In May 2012, he transferred to Marmara University Faculty of Medicine, where he became an Associate Professor in Pediatric Gastroenterology, Hepatology, and Nutrition in 2014, and a Professor in 2020. Alongside his international and national article authorships, he has given over 50 presentations at congresses/courses/association meetings. He retired in May 2024 while serving as the head of the Pediatric Gastroenterology, Hepatology, and Nutrition department at Marmara University Faculty of Medicine. As of June 2024, he is accepting patients at Hisar Hospital Intercontinental.

MEDICAL INTERESTS

• Healthy child monitoring
• Growth and nutritional disorders
• Approach to patients with abdominal pain
• Gastroesophageal reflux
• Chronic diarrhea and chronic constipation
• Celiac disease
• Inflammatory bowel disease
• H. pylori infection-related and unrelated gastritis and ulcers, patients with gastric bleeding
• Liver, gallbladder, and pancreas diseases
• Acute and chronic gastrointestinal infections
• Diagnostic upper and lower gastrointestinal endoscopy
• Therapeutic upper and lower gastrointestinal endoscopy (esophageal variceal bleeding, gastric and small bowel ulcer bleeding, polypectomy)
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Education:

• Bachelor of Science (MD): Faculty of Medicine, Uludag University, 1989

Specialized Education and Experience:

• General Surgery Specialist Degree: Ankara Numune Training and Research Hospital, 1997
• Fellowship: Gastroenterology Surgery, Türkiye High Specialization Hospital, 2005

Academic Career:

• Associate Professor: General Surgery, Inonu University, 2011
• Professorship: General Surgery, İnönü University, 2017

Education and Academic Titles

• Hacettepe University Faculty of Medicine – Medical Degree, 1992
• Başkent University Faculty of Medicine – General Surgery Residency, 1995
• Ankara Numune Training and Research Hospital – General Surgery Residency, 2000
• Gaziantep University Faculty of Medicine – Assistant Professor of General Surgery, 2007
• Interuniversity Council – Associate Professorship, 2018
• Istanbul Aydın University – Professorship, 2023
• Second Bachelor’s Degree: Anadolu University – Public Administration, 2008
• Master’s Degree: Akdeniz University – Health Law, 2023

The doctor is a renowned general and laparoscopic surgeon with extensive experience in colorectal surgery, obesity, and metabolic management. Specializing in a wide range of laparoscopic surgical procedures, the doctor is particularly focused on bariatric and gastrointestinal system surgery.

Significant contributions have been made to medical research in hepatobiliary and pancreatic diseases, emergency surgery, and gastrointestinal endoscopy, with numerous publications in peer-reviewed journals.

The doctor holds a Bachelor's Degree from Karadeniz Technical University and a Medical Specialty in General Surgery from Istanbul University.

Dr. Gokhan Yilmaz is an experienced general surgeon with nearly 20 years in medical practice. He is known for his skill in complex surgical procedures. He earned his Master’s Degree from Istanbul University Çapa Faculty of Medicine. He completed his Doctorate in General Surgery at Okmeydanı Training and Research Hospital, one of Turkey’s leading institutions.

Dr. Yilmaz worked as a General Surgery Specialist at Zonguldak Atatürk State Hospital for 5 years. He then served at Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital for 3 years. In these roles, he managed a wide range of surgical cases. He also served as an Assistant Professor at Istanbul Medipol University, where he trained future surgeons and contributed to research.

Dr. Yilmaz is currently part of the General Surgery Department at Medipol University Pendik Hospital. He provides advanced treatments and high-quality patient care. His experience in state hospitals, research centers, and universities highlights his dedication to surgical excellence and patient safety.

Full time doctor at PrimeCare Bangkok who is also currently pursing a masters degree and research in anti-aging 

Education

Doctor of Medicine (M.D.) degree from Faculty of Medicine, Ramathibodi Hospital, Mahidol University,2023

Certifications

Currently pursuing a Master’s degree in Anti-Aging and Regenerative Medicine, Dhurakij Pundit University Bangkok (DPU)

Languages spoken: English and Thai

Dr. Andrej Orságh is a gastroenterologist, certified in 2015. He has worked at the Gastroenterology Department of the National Cancer Institute (NOÚ) since 2016. Since 2019 he has been the institute’s specialist consultant for colorectal cancer screening. He leads the colorectal cancer screening working group of the Slovak Gastroenterological Society. He is vice-chair of its Endoscopy Section and chair of its Oncology Section.

He graduated from Comenius University in 2009. He trained at the Gastroenterology Clinic of the University Hospital in Bratislava and at the Slovak Medical University. He shares his expertise at professional conferences and in publications. He also teaches basic and advanced endoscopic techniques in NOÚ courses.

Dr. Boris Pekárek is a gastroenterologist. He graduated from the Faculty of Medicine, Comenius University in Bratislava in 2002. He worked at the Internal Medicine Clinic in Trnava from 2002 to April 2010. He obtained his specialization in gastroenterology in 2008.

Since April 2010, he has worked at the Gastroenterology Department of the National Cancer Institute. He has led the department since 2017. He completed several specialized training courses abroad. He focuses on endoscopic diagnosis and treatment of early tumors of the esophagus, stomach, colon, and rectum.

He served as chair of the Oncology Section of the Slovak Gastroenterological Society from 2018 to 2024. He is the current chair of its Endoscopy Section and a member of the Society’s committee. He publishes, lectures at conferences, and trains basic and advanced endoscopic techniques in Slovakia and abroad.

Dr. Juraj Letkovsky has been a gastroenterologist at the Gastroenterology Department of the National Cancer Institute (NOÚ) since 2017. He graduated in medicine in 2012 and earned a PhD in internal medicine in 2016. He obtained specialization in gastroenterology in 2018.

His practice focuses on advanced endoscopic diagnosis and treatment of digestive tract tumors. He performs endosonography and ERCP for pancreatic and biliary diseases.

He serves on the Young Gastroenterologists, Endoscopy, and Oncology sections of the Slovak Gastroenterology Society. He is a co-author of an ongoing multicenter study on colonoscopy quality in Slovakia. He holds certificates in diagnostic and interventional esophagogastroduodenoscopy (2022) and endoscopic retrograde cholangiopancreatography (2023).

Pichai Kittipanyaworakul, M.D., is an internist. He specializes in gastroenterology and hepatology.

Education: Doctor of Medicine (M.D.), Faculty of Medicine, Chiang Mai University.

Accreditations: Diploma in Internal Medicine, Chulalongkorn Memorial Hospital, Thai Red Cross Society. Diploma in Internal Medicine (Gastroenterology and Hepatology), Faculty of Medicine Ramathibodi Hospital, Mahidol University.

Dr. Lubos Zitnan is a gastroenterologist at the Gastroenterology Department of the National Cancer Institute. He has worked there since 2010. He also serves on the committee of the Oncology Section of the Slovak Gastroenterological Society.

His practice includes colonoscopy, gastroscopy, endosonography (EUS), and ERCP for pancreatic and biliary diseases. He holds certificates in diagnostic and interventional esophagogastroduodenoscopy, diagnostic and interventional colonoscopy, and endoscopic retrograde cholangiopancreatography.

He graduated from the Faculty of Medicine, Comenius University, in 2003. He completed an internal medicine residency at Malacky Hospital. He began specialized training in gastroenterology at the National Cancer Institute in 2007.

Dr. Daniela Osuská is a gastroenterologist. She graduated from the First Faculty of Medicine, Charles University, in 2010. From 2010 to 2019 she worked as a secondary physician at the Internal Medicine Clinic of Nitra University Hospital. There she began performing endoscopies. Since 2019 she has worked at the Gastroenterology Department of the National Cancer Institute. She earned her gastroenterology specialization in 2021.

She serves on the supervisory board of the Oncology Section of the Slovak Gastroenterological Society and the Section of Young Gastroenterologists. She publishes and presents her work in Slovakia and abroad. She also trains physicians in endoscopic techniques.

Education and Specialization

• 2006 – Ankara University, Faculty of Medicine
• 2007, 2011 – Baskent University, Faculty of Medicine, Residency Training

Experience

• 2011, 2013 – Konya Çumra State Hospital – Radiology Specialist
• 2013, 2018 – Baskent University Konya Application and Research Center, Interventional Radiology Unit – Lecturer
• 2018,2019 – Baskent University Konya Application and Research Center, Interventional Radiology Department – Associate Professor
• 2019  Present – Medical Park Antalya Hospital Complex, Interventional Radiology Department – Associate Professor

Personal Information 

Sex:  Male

Born : 1968 

Professional Experience

Gayrettepe Florence Nigthingale Hospital

Medical Oncology Department

Besiktas/Istanbul/Turkey (ongoing)

Education:

He became Professor (22/April /2016)

Medical Oncology

Attending Phys.in Gastrointestinal Oncology (January 2005 ,2009)

Istanbul University Oncology Institue,

Department of Medical Oncology

Medical Oncology Fellowship (December 2001-December2004)

Istanbul University, Istanbul Medical Faculty

Hemodialysis Traning (May1996-January1997)

Istanbul University ,bCerrahpasa Medical Faculty

Internal Medicine Residency (November 1991-November 1996)

Istanbul University ,bCerrahpasa Medical Faculty

Ege University Medical Faculty (1985-1991)

Professional Experience

February 1999-November 2001

Metropolitan Florence Nigthingale Hospital

American Cancer Center, Gayrettepe/İstanbul

April1997- October 1998

Bayraktar Dialysis Center

Güngören/ Istanbul

Membership

Turkish Medical Oncology Association

ENET(European Neuroendocrine Tumour Society)

ESMO

ASCO

Education and Specialization

• Ankara University Faculty of Medicine – Medical Education
• Ankara University Faculty of Medicine – General Surgery Specialization
• Akdeniz University Faculty of Medicine – Associate Professorship
• Akdeniz University Faculty of Medicine – Professorship

Professional Memberships
• Turkish Medical Association
• Mediterranean Health Foundation
• Akdeniz University Development and Health Foundation
• Transplantation Organizations Coordination Association
• National Surgical Association

Education and Specialization

• Faculty of Medicine, Hacettepe University
• 1999 - Akdeniz University, Faculty of Internal Medicine, Internal Medicine Specialization Training
• Internal Medicine Specialization Training in the USA, Akdeniz University (2013 - 2014)
• Internal Medicine Specialization Training in the USA (2013 - 2014) - Medical Oncology Department
• Akdeniz University, Faculty of Medicine, Department of Medical Oncology (Received Associate Professorship title)

Work Experience

• 2009 - Kayseri Training and Research Hospital, Hospital
• Acıbadem Kayseri
• 2017 - 2018 - Lara Private Anadolu Hospital
• 2018 - Medical Park Antalya Hospital Complex

Expertise

• Diagnosis of organ tumors
• Chemotherapy in cancer treatment
• Targeted cancer therapies
• Immunotherapy in cancer treatment
• Next-generation genetic research in cancer treatment
• Complementary medicine in cancer treatment
• Medical oncology