Best oncologists in Istanbul: TOP 112 doctors

Assoc. Prof. Gorkem Turkkan started his medical education at Gülhane Military Medical Academy in 2003 and completed it at Zonguldak Karaelmas (Bülent Ecevit) University Faculty of Medicine in 2009. He completed his specialization at Trakya University Faculty of Medicine, Department of Radiation Oncology and became a radiation oncology specialist in 2016.

After completing his compulsory service, he served as a Lecturer and Head of Department at Muğla Sıtkı Koçman University Faculty of Medicine, Department of Radiation Oncology, from May 2019 to February 2021. Meanwhile, between March and June 2020, he worked as a clinical researcher at Maastricht University Faculty of Medicine Department of Radiation Oncology – MAASTRO Clinic (Netherlands) on stereotactic radiotherapy, thoracic radiotherapy-related lung toxicity and proton therapy. While he was working at İstinye University Faculty of Medicine, Department of Radiation Oncology and Liv Hospital Ulus Radiation Oncology Clinic between March 2021 and April 2023, he received the title of Associate Professor in February 2023. She has been serving her patients at Hisar Hospital Intercontinental since May 2023.

He has performed both traditional radiotherapy and advanced radiotherapy throughout his career. He is one of the experienced physicians in our country in stereotactic radiotherapy and MRI-guided radiotherapy treatments, which have become increasingly popular and used especially recently. So far, he has successfully completed more than 2500 radiotherapy sessions with the MR-Linac device.

He has been a member of the Turkish Society of Radiation Oncology (TROD) since 2013 and the European Society of Radiotherapy and Oncology (ESTRO) since 2015. He has 27 articles published in domestic and international journals, 31 oral-poster presentations presented at national and international congresses, and 5 book chapters published by national and international publishing houses. He taught Term I and Term V undergraduate courses at Muğla Sıtkı Koçman University Faculty of Medicine, postgraduate courses within the scope of Ear Nose and Throat Department Specialization training, and Radiotherapy associate degree courses at İstinye University Vocational School of Health Services. She is currently working on 2 ongoing TÜBİTAK Projects. He is married and has a son.

MEDICAL INTERESTS

MR-Linac

Linac

Stereotactic (Pinpoint) Radiotherapy

Prostate Cancers

Breast Cancers

Lung Cancers

Rectum Cancers

Brain and Spinal Cord Cancers

Head and Neck Cancers

Volumetric Arc Therapy (VMAT)

Intensity Modulated Radiotherapy (IMRT)

• 2021 - 2021, Istanbul/Turkey
  SEYRANTEPE HAMİDİYE ETFAL HOSPITAL
  General Surgery Specialist
• 2021 - Currently, Istanbul/Turkey
  MEMORIAL HİZMET HOSPITAL
  General Surgery Specialist
• 2021 - Currently, Istanbul/Turkey
  MEMORIAL ATAŞEHİR HOSPITAL
  General Surgery Specialist
• 2014 - 2014, Istanbul/Turkey
  BEZMIALEM UNIVERSITY
  General Surgery Specialist
• 2013 - 2013, /ABD
  ST-MARY HOSPİTAL
  General Surgery Specialist
• 2009 - 2009, Istanbul/Turkey
  BÜYÜKÇEKMECE PUBLIC HOSPITAL
  General Surgery Specialist
• 2009 - 2021, Istanbul/Turkey
  SISLI HAMİDİYE ETFAL HOSPITAL
  General Surgery Specialist

• 2019 - Currently, Istanbul/Turkey
  MEMORIAL ATAŞEHİR HOSPITAL
  Obstetrician and Gynecologist - Gynecological Oncology Surgery
• 2017 - 2019, Istanbul/Turkey
  ISTANBUL MEDENIYET UNIVERSITY GÖZTEPE TRAINING AND RESEARCH HOSPITAL
  Gynecological Oncology Surgery Center
• 2012 - 2017, Istanbul/Turkey
  ZEYNEP KAMIL WOMEN HEALTH AND PEDIATRICS TRAINING AND RESEARCH HOSPITAL
  Gynecology and Obstetrics Specialist
• 2008 - 2012, Bursa/Turkey
  MUSTAFAKEMALPAŞA PUBLIC HOSPITAL
  Gynecology and Obstetrics Specialist
• 2004 - 2008, Erzincan/Turkey
  ERZINCAN PUBLIC HOSPITAL
  Gynecology and Obstetrics Specialist

• 2021 - Currently, Istanbul/Turkey
  MEMORIAL ŞİŞLİ HOSPITAL
  Dermatology Specialist
• 2021 - Currently, Istanbul/Turkey
  MEMORIAL ATAŞEHİR HOSPITAL
  Dermatology Specialist
• 2013 - 2021, Istanbul/Turkey
  MEDENİYET UNIVERSITY
  Lecturer
• 2013 - 2016, Istanbul/Turkey
  MEDENİYET UNIVERSITY
  Head of Department
• 2013 - 2014, Istanbul/Turkey
  MEDENİYET UNIVERSITY
  Director of the Institute of Health Sciences
• 2012 - 2012, /ABD
  PITTSBURGH UNIVERSITY
  Visiting Scholar
• 2010 - 2013, Erzurum/Turkey
  ATATURK UNIVERSITY MEDICAL FACULTY
  Professor, Lecturer, Dermatology Specialist
• 2001 - 2007, Van/Turkey
  YUZUNCU YIL UNIVERSITY
  Assistant Professor, Dermatology Specialist

2021 - Currently, İstanbul

ASSOCIATE PROFESSOR

ASSOCIATE PROFESSOR

2009 - 2012, İstanbul / Turkey

T.R. ISTANBUL SCIENCE UNIVERSITY EUROPEAN FLORENCE NIGHTINGALE HOSPITAL

Minor Specialization Training

2003 - 2008, İstanbul / Turkey

ŞİŞLİ HAMİDİYE ETFAL EDUCATION AND RESEARCH HOSPITAL

Assistant Physician

1990 - 1996, Ankara / Turkey

GAZİ UNIVERSITY FACULTY OF MEDICINE

Medical Doctor Training

• 2010 - Currently, İstanbul/İstanbul/Turkey
  MEMORIAL ŞİŞLİ HOSPITAL
  General Surgery Specialist
• 2000 - 2010, İstanbul/İstanbul/Turkey
  MEMORIAL HİZMET HOSPITAL
  General Surgery Specialist, Assistant Head Physician
• 1992 - 1993, Gümüşhane/Gümüşhane/Turkey
  GÜMÜŞHANE PUBLIC HOSPITAL
  Compulsory Service

2019 - Present, Istanbul/Istanbul/Türkiye

MEMORIAL SISLI HOSPITAL

Interventional Radiology-Interventional Oncology Specialist

2015 - 2019, Istanbul/Istanbul/Türkiye

SCIENCE UNIVERSITY&FLORENCE NIGHTINGHALE HOSPITALS GROUP

Interventional Radiology-Interventional Oncology Specialist

2009 - 2015, Istanbul/Istanbul/Türkiye

ACIBADEM HEALTH GROUP

Interventional Radiology Manager

2002 - 2009, Istanbul/Istanbul/Türkiye

GERMAN HOSPITAL

Interventional Radiology Manager

2001 - 2002, Istanbul/Istanbul/Türkiye

AMERICAN HOSPITAL

Interventional Radiology Manager

1998 - 2001, Istanbul/Istanbul/Türkiye

ISTANBUL SURGICAL HOSPITAL

Radiology and Interventional Radiology Specialist

2018 - Present, Istanbul/Istanbul/Türkiye

MEMORIAL BAHCELIEVLER HOSPITAL

Medical Oncology Specialist

2018 - 2018, Istanbul/Istanbul/Türkiye

ISTANBUL AYDIN UNIVERSITY MEDICAL PARK FLORYA HOSPITAL

Medical Oncology Specialist

2015 - 2018, Istanbul/Istanbul/Türkiye

HASEKİ TRAINING AND RESEARCH HOSPITAL

Medical Oncology Specialist

2011 - 2014, Istanbul/Istanbul/Türkiye

ISTANBUL SCIENCE UNIVERSITY INTERNAL MEDICINE DEPARTMENT

Medical Oncology Assistant

2011 - 2011, Istanbul/Istanbul/Türkiye

KANUNİ SULTAN TRAINING AND RESEARCH HOSPITAL

Internal Medicine Specialist

2006 - 2011, Istanbul/Istanbul/Türkiye

ISTANBUL TRAINING AND RESEARCH HOSPITAL

Internal Medicine Assistant

2004 - 2005, Istanbul/Istanbul/Türkiye

ISTANBUL UNIVERSITY CERRAHPAŞA MEDICAL FACULTY BIOCHEMISTRY UNITED STATES

Research Assistant

2003 - 2004, Karabuk/Karabuk/Türkiye

KARABUK PROVINCE SAFRANBOLU NO. 3 HEALTH CENTER

General Practitioner

2018 - Present, Istanbul/Istanbul/Türkiye

MEMORIAL BAHCELIEVLER HOSPITAL

Radiation Oncology Specialist

1986 - Present, Istanbul/Istanbul/Türkiye

ISTANBUL UNIVERSITY CERRAHPAŞA MEDICAL FACULTY

Radiation Oncology Specialist

2015 - 2018, Istanbul/Istanbul/Türkiye

MEMORIAL SISLI HOSPITAL

Radiation Oncology Specialist

2022 - Present, Istanbul/Türkiye

MEMORIAL BAHCELIEVLER HOSPITAL

Internal Medicine and Medical Oncology Specialist

2021 - 2022, Istanbul/Türkiye

MEDICAL PARK BAHÇELİEVLER HOSPITAL

Internal Medicine and Medical Oncology Specialist

2017 - 2021, Istanbul/Türkiye

ISTANBUL NEW CENTURY UNIVERSITY GAZİOSMANPAŞA HOSPITAL

Internal Medicine and Medical Oncology Specialist

2013 - 2017, Van/Türkiye

VAN YUZUNCUYIL UNIVERSITY FACULTY OF MEDICINE

Internal Medicine and Medical Oncology Specialist

2011 - 2013, Van / Türkiye

VAN TRAINING AND RESEARCH HOSPITAL

Internal Medicine and Medical Oncology Specialist

2004 - 2007, Agri / Türkiye

AĞRI PATNOS STATE HOSPITAL

Internal Medicine Specialist

2018 - Present, Istanbul/Istanbul/Türkiye

MEMORIAL BAHCELIEVLER HOSPITAL

Radiation Oncology Specialist

2016 - 2018, Istanbul/Istanbul/Türkiye

ISTANBUL UNIVERSITY CERRAHPAŞA MEDICAL FACULTY

Radiation Oncology Specialist

EXPERIENCE*

2019 - Present, Istanbul/Istanbul/Turkey

MEMORIAL ATAŞEHİR HOSPITAL

General Surgeon

2012 - 2019, Diyarbakır/Diyarbakır/Turkey

DİCLE UNIVERSITY FACULTY OF MEDICINE

General Surgeon

2011 - 2012, Van/Van/Turkey

VAN REGIONAL TRAINING AND RESEARCH HOSPITAL

General Surgeon

2009 - 2011, Van/Van/Turkey

HAKKARİ STATE HOSPITAL

General Surgeon

2004 - 2009, Van/Van/Turkey

YÜZÜNCÜYIL UNIVERSITY FACULTY OF MEDICINE

General Surgeon

2002 - 2004, Van/Van/Turkey

HACIBEKİR HEALTH CENTER

General Practitioner

*EDUCATION*

2018 - 2019, Diyarbakır/Turkey

Associate Professor

2015, Ohio/USA

OHIO STATE UNIVERSITY WEXNER MEDICAL CENTER

Neck Dissection Training

2012 - 2018, Diyarbakır/Turkey

Assistant Professor

1996 - 2002, Adana/Turkey

ÇUKUROVA UNIVERSITY

FACULTY OF MEDICINE - Medical Doctor Education

Born in Trabzon in 1972, Dr. İzzettin Kahraman began his medical studies at Karadeniz Technical University Faculty of Medicine in 1989 and earned his Medical Doctor degree in 1995. Following two years as a general practitioner, he embarked on his specialization training in 1997. He completed his residency at Ankara Oncology Training and Research Hospital, becoming a General Surgery Specialist in 2002.

Dr. Kahraman worked as a General Surgery Specialist in public hospitals, including Trabzon Numune Hospital and Bakırköy Dr. Sadi Konuk Training and Research Hospital, for 13 years. From 2016 to 2018, he served as a Lecturer at University of Health Sciences. In 2019, he transitioned to the private sector, continuing his career in private hospitals.

Throughout his career, Dr. Kahraman has engaged in a wide range of training programs both in Turkey and abroad. In 2007, he earned a Surgical Endoscopy Certificate and furthered his expertise in laparoscopic hernia treatments in Hamburg, Germany, in 2008. He also completed a course on Nutrition Practices and Training at Ondokuz Mayis University and a specialized course in laparoscopic hernia repair in Istanbul in 2010.

In 2011, after completing the "Emergency Surgery" course in Istanbul organized by the European Society for Trauma and Emergency Surgery (ESTES), Dr. Kahraman received training in SILS (Single Incision Laparoscopic Surgery) Cholecystectomy at Gazi University in Ankara. Since then, he has specialized in advanced laparoscopic techniques, with a particular focus on endoscopy, gastric diseases, obesity, and metabolic surgery.

In 2021, Dr. Kahraman obtained certificates in Ozone Therapy and Mesotherapy from Medipol University. 

Since 2023, he has been serving at Estexper Clinic, Istanbul.

Education and Career

2011 – 2015, (Internal Medicine Specialist) Istanbul University Istanbul School of Education and Career

Medicine Department of Internal Medicine

2015 – 2016, (Internal Medicine) Specialist Istanbul Haydarpasa Numune Training and Research Hospital

2016 – 2019, (Medical Oncology) Istanbul University Istanbul School of Medicine Department of Medical Oncology

2019 – 2021, (Medical Oncology Specialist) - Istanbul Haydarpasa Numune Training and Research Hospital

2021 – 2024, (Associate Professor) Marmara University School of Medicine Department of Medical Oncology

Memberships in Scientific Organizations

ASCO

ESMO

TTOD 

AVOD 

Publications

In the field of oncology, he has published over 30 peer-reviewed articles at both international and national levels.

Awards Received

EAACI The European Academy of Allergy and Clinical Immunology 2019 Best Poster Award

"The top 3rd verbal presentation, IGICC (11th International Gastrointestinal Cancers Conference – IGICC2021)"

Speeches Delivered at National Congresses, Conferences, and Symposia:

Courses, Meetings, and Certificates

ESMO certified Medical Oncologist since 2019

Education

• (2004 – 2011), Faculty of Medicine/ Inonu University/ Malatya, Turkiye
• (2011 – 2015), Department of Radiology/ Bagcilar Training and Research Hospital/ Istanbul, Turkiye

Career

• (2016 – 2020), Diagnostic and Interventional Radiologist/ Mus State Hospital/ Mus,Turkiye
• (2020 – 2022), Assistant Professor of Diagnostic and Interventional Radiology/ Sakarya University Training and Research Hospital/ Sakarya, Turkiye
• (2023 – 2024), Associate Professor of Diagnostic and Interventional Radiology /Sakarya University Training and Research Hospital/ Sakarya, Turkiye
• (2024 - Present), Associate Professor of Diagnostic and Interventional Radiology /Medipol University Hospital/ Istanbul, Turkiye

Education

• 1986-1989, Bursa High School, Bursa, Turkey
• 1989-1995, Istanbul University, Istanbul School of Medicine, Turkey
• 1999-2003, (Residency) Kadir Has University, School of Medicine, Department of Radiation Oncology, Istanbul, Turkey
• 2015, (Associate Professor) Demiroglu Bilim University, Department of Radiation Oncology, Istanbul, Turkey
• 2021, (Professor) Demiroglu Bilim University, Department of Radiation Oncology, Istanbul, Turkey
• 2024, Istanbul Medipol University, Department of Radiation Oncology, Istanbul, Turkey

Experience

• 1995-1999, Şişli Florence Nightingale Hospital, Istanbul, Cardiology Department
• 2003, Gayrettepe Florence Nightingale Hospital, Istanbul, Department of Radiation Oncology
• 2015, (Associate Professor in Radiation Oncology) Demiroglu Bilim University, Department of Radiation Oncology, Istanbul, Turkey
• 2021, (Professor in Radiation Oncology) Demiroglu Bilim University, Department of Radiation Oncology, Istanbul, Turkey
• 2024, Istanbul Medipol University, Department of Radiation Oncology, Istanbul, Turkey

Medical Fields of Interest: 

Hemostasis-Thrombosis 

Anemia 

Education: 

Cerrahpasa Faculty Of Medicine Pediatric Hematology Department 

Marmara University Faculty of Medicine, Child Health and Diseases Department  

Besiktas Ataturk Anatolian High School 

Experience: 

Liv Hospital Ulus 

Kanuni Sultan Suleyman Training And Research Hospital 

Cerrahpasa Medical Faculty Hospital 

Austria St George Hospital 

Marmara University Faculty of Medicine Hospital

Memberships: 

Turkish Society of Pediatric Hematology 

Turkish Society of Hematology 

Turkish Pediatric Association 

Istanbul Febrile Neutropenia Group 

European Association of Hematology (EHA) 

American Association of Hematology (ASH) 

International Hemostasis Thrombosis Association (ISTH)

Medical Interests and Activities 

Gastrointestinal diseases 

Oncologic laparoscopic surgery 

Anorectal area diseases 

Urgent surgical cases (acute cholecystitis, divertikülit, ileus, pankreatit, appendicitis) 

Colon and rectum cancer 

Treatment of oncologic surgical cases with further laparoscopic and robotic surgery. 

Laparoscopic hernia surgery 

Esophagus and stomach cancer 

Selim anorectal diseases (hemorrhoidal disease, anal fissure), perianal fistula, pilonoidal sinus (hairless- non-surgical treatment)

Education and Experience 

İstanbul University Medical Faculty 1988 

University of Colorado Health Science Center – Intern Surgeon 

Isparta, Dedeçam Şehit Ramazan Karaca Health Center (1995-1996) 

İstanbul Surgery Hospital – American Hospital (2000-2001) 

Chief assistant Istanbul Medical Faculty, Department of General Surgery (2001-2008) 

World Congress on Peritonel Surface Malignancies (HIPEC course) Berlin, Germany (2012) 

USC Keck School of Medicine, Los Angeles, CA, USA (2006-2007) 

Assoc. Prof. M.D. , İstanbul Medical Faculty General Surgery (2008-2014) 

Da Vinci Robotic Intensive Course at IRCAD, Strasbourg, France (2011) 

Stony Brook Medicine Cadaver Training Event in Colon and Rectal Surgery, New York, USA (2016) (Instructor) 

Fellow of the European Board of Surgery- Emergency Surgery (FEBS EmSurg) Honorary Diploma (2017) 

Prof. M.D. , İstanbul Medical Faculty General Surgery (2014 -2017) 

İstanbul University Medical Faculty – General Surgery Master of Science 1996 

University of Southern California Medical Center, Department of General Surgery, Los Angeles, USA – February 2006 – February 2007

Liv Hospital

Memberships 

Turkish Society of Surgery 

National Endoscopic Laparoscopic Surgery Association 

Turkish Colon and Rectum Surgery Association 

National Trauma and Emergency Surgery Association 

Hepato-Pancreato-Bilier Surgery Association 

Istanbul Surgical Association 

Flebology Association 

ESTES (European Society of Trauma and Emergency Surgery) 

International Society of Surgery (ISS)

Medical Field of Special Interest and Activities 

Molecular Scanning 

Nuclear Oncology 

Radionuclide Treatments

Education and Experience 

2018- Private LIV Hospital Ulus 

2015-2018 İstanbul Bilim University, Şişli Florence Nightingale Hospital 

2006-2015 Mersin University Master of Science in Nuclear Medicine 

2005-2006 Ankara Özel Denge Medical Centre 

2004 Hacettepe University Medical Faculty 

Specialization Training: 2000-2004 Hacettepe University Master of Science in Nuclear Medicine 

Undergraduate: 1993-1999 Hacettepe University Medical Faculty

Memberships 

Journal of Musculoskeletal Pain 

Turkish Journal of Clinical Sciences 

Molecular Imaging and Radionuclide Therapy 

Turkish Clinics Journal of Case Reports 

Journal of Clinical and Experimental Investigations 

Journal of Clinical and Analytical Medicine 

Acıbadem University Health Sciences Magazine 

Turkey Nuclear Medicine Association