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.
Read moreBorn 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.
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
Read more
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
Career
Education
Career
Education
Experience
Education
Experience
Specializations
Cancer Surgery
Pancreatic Surgery
Bile Duct Surgery
Bariatric Metabolic Surgery
Oncological Surgery
Breast Surgery
Gastric cancer
Colon cancer
Thyroid Cancer
Obesity Surgery
Diabetes Surgeries
Read more
Specializations
Cancer Surgery
Pancreatic Surgery
Bile Duct Surgery
Bariatric Metabolic Surgery
Oncological Surgery
Breast Surgery
Gastric cancer
Colon cancer
Thyroid Cancer
Obesity Surgery
Diabetes Surgeries
Education
Ondokuz Mayıs University Faculty of Medicine (1991)
KTÜ Faculty of Medicine Farabi Hospital (Specialization.1998)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Surgery Training, 2002)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Antireflux Surgery Training, 2006)
Istanbul University Cerrahpaşa Faculty of Medicine (General Surgery Clinic Advance Laparoscopic Surgery, Laparoscopic Bariatric Surgery, Morbid Obesity and Oncological Cancer Surgery Training, 2010i)
Read more
Education
Ondokuz Mayıs University Faculty of Medicine (1991)
KTÜ Faculty of Medicine Farabi Hospital (Specialization.1998)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Surgery Training, 2002)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Antireflux Surgery Training, 2006)
Istanbul University Cerrahpaşa Faculty of Medicine (General Surgery Clinic Advance Laparoscopic Surgery, Laparoscopic Bariatric Surgery, Morbid Obesity and Oncological Cancer Surgery Training, 2010i)
Specializations
Cancer Surgery
Pancreatic Surgery
Bile Duct Surgery
Bariatric Metabolic Surgery
Oncological Surgery
Breast Surgery
Gastric cancer
Colon cancer
Thyroid Cancer
Obesity Surgery
Diabetes Surgeries
Read more
Specializations
Cancer Surgery
Pancreatic Surgery
Bile Duct Surgery
Bariatric Metabolic Surgery
Oncological Surgery
Breast Surgery
Gastric cancer
Colon cancer
Thyroid Cancer
Obesity Surgery
Diabetes Surgeries
Specializations
Oncological Surgery (Cancer Surgery)
Breast Diseases Surgery
Gallbladder and biliary tract diseases surgery
Thyroid – Parathyroid Surgery
Inguinal and Abdominal Wall Hernia, Stomach Hernia Surgery
Closed (Laparoscopic) Hernia Surgery
Endoscopy Applications
Treatment of Gastrointestinal System Diseases
Read more
Specializations
Oncological Surgery (Cancer Surgery)
Breast Diseases Surgery
Gallbladder and biliary tract diseases surgery
Thyroid – Parathyroid Surgery
Inguinal and Abdominal Wall Hernia, Stomach Hernia Surgery
Closed (Laparoscopic) Hernia Surgery
Endoscopy Applications
Treatment of Gastrointestinal System Diseases
She completed her training at the Charité in Berlin and has been a specialist in radiotherapy for 20 years. She worked as a senior physician in all departments of the Charité in Berlin, and from 2007 to 2015 she was a senior physician and deputy director of the Charité clinic in Berlin. In 2015, she was appointed head of the department of radiotherapy at the University Hospital of Cologne and very successfully headed the clinic there until 2022. Since the end of 2022, she has been heading the private radiotherapy clinic "RadioOnkologie Vosspalais". Clinical areas include radioimmunotherapy, high-precision therapy, multimodal therapy of gynecological tumors and prostate carcinoma.
Professor Dr. Marnitz is a member of the German and European Guidelines for the Therapy of Endometrial Carcinoma. She is also an independent external expert of the European Council for the Therapy of Carcinoma of the Cervical, Vulvar and Vaginal Cancer. Professor Dr. Marnitz is a member of the German and European Guidelines for the Therapy of Endometrial Carcinoma. She is also an independent external expert of the European Council for the Therapy of Carcinoma of the Cervical, Vulvar and Vaginal Cancer. Several randomized clinical trials have been conducted under her leadership.
Professor Dr. Marnitz is an honorary member of the Russian Society of Gynecological Oncology, a member of the professional societies DEGRO, ESTRO, ASTRO. In 2024, Professor Dr. Marnitz will be the president of the congress of the annual conference of the German Society of Radiation Oncology.
Read moreShe completed her training at the Charité in Berlin and has been a specialist in radiotherapy for 20 years. She worked as a senior physician in all departments of the Charité in Berlin, and from 2007 to 2015 she was a senior physician and deputy director of the Charité clinic in Berlin. In 2015, she was appointed head of the department of radiotherapy at the University Hospital of Cologne and very successfully headed the clinic there until 2022. Since the end of 2022, she has been heading the private radiotherapy clinic "RadioOnkologie Vosspalais". Clinical areas include radioimmunotherapy, high-precision therapy, multimodal therapy of gynecological tumors and prostate carcinoma.
Professor Dr. Marnitz is a member of the German and European Guidelines for the Therapy of Endometrial Carcinoma. She is also an independent external expert of the European Council for the Therapy of Carcinoma of the Cervical, Vulvar and Vaginal Cancer. Professor Dr. Marnitz is a member of the German and European Guidelines for the Therapy of Endometrial Carcinoma. She is also an independent external expert of the European Council for the Therapy of Carcinoma of the Cervical, Vulvar and Vaginal Cancer. Several randomized clinical trials have been conducted under her leadership.
Professor Dr. Marnitz is an honorary member of the Russian Society of Gynecological Oncology, a member of the professional societies DEGRO, ESTRO, ASTRO. In 2024, Professor Dr. Marnitz will be the president of the congress of the annual conference of the German Society of Radiation Oncology.
Prof. Dr. med. Volker Budach *Prof. Dr.med. Volker Budach
He completed his medical studies at the University of Essen and was appointed to the Department of Radiotherapy at the Charité Hospital in Berlin in 1993. He successfully headed this department until 2022, with almost 40 years of professional and 30 years of managerial experience. Under the direction of Prof. Dr. Budach, numerous clinical studies were conducted, especially in the therapy of head and neck tumors. Along with other tumors such as sarcomas, bronchial carcinomas and breast carcinomas, which are his clinical and scientific focus. Prof. Dr. Budach founded and for many years jointly directed the comprehensive cancer center at the Charité. In addition to his function as director of the clinic, he also headed the Charité Center 14, which combined the topics of imaging and oncology. Prof. Budach was President of the German Society for Radiation Oncology (DEGRO) and President of its congress. At the EORTC, he headed the head and neck tumour group for many years. He is the author of numerous important papers on the optimisation of radiotherapy and chemotherapy in the treatment of head and neck tumours. After 30 years of leading the clinic, Prof. Dr. Budach decided to transfer his experience in radiation oncology to the RadioOnkologie Vosspalais clinic. Prof. Dr. Budach is a member of the professional associations DEGRO, ESTRO, ASTRO.
Read moreProf. Dr. med. Volker Budach *Prof. Dr.med. Volker Budach
He completed his medical studies at the University of Essen and was appointed to the Department of Radiotherapy at the Charité Hospital in Berlin in 1993. He successfully headed this department until 2022, with almost 40 years of professional and 30 years of managerial experience. Under the direction of Prof. Dr. Budach, numerous clinical studies were conducted, especially in the therapy of head and neck tumors. Along with other tumors such as sarcomas, bronchial carcinomas and breast carcinomas, which are his clinical and scientific focus. Prof. Dr. Budach founded and for many years jointly directed the comprehensive cancer center at the Charité. In addition to his function as director of the clinic, he also headed the Charité Center 14, which combined the topics of imaging and oncology. Prof. Budach was President of the German Society for Radiation Oncology (DEGRO) and President of its congress. At the EORTC, he headed the head and neck tumour group for many years. He is the author of numerous important papers on the optimisation of radiotherapy and chemotherapy in the treatment of head and neck tumours. After 30 years of leading the clinic, Prof. Dr. Budach decided to transfer his experience in radiation oncology to the RadioOnkologie Vosspalais clinic. Prof. Dr. Budach is a member of the professional associations DEGRO, ESTRO, ASTRO.
She received her medical education in Russia. After completing her residency in Berlin, Dr. Steingraeber worked as a specialist and senior physician at the Charité, the Neukölln Hospital in Berlin and in the practice of radiooncology. Dr. Steingraeber speaks fluent Russian. Her clinical specialization includes bronchial carcinoma and breast carcinoma.
Membership/Committee Service:
DEGRO, ARO, DKG, AGSMO
Member of interdisciplinary committees for the development of guidelines:
Esophageal carcinoma
Anal carcinoma
Oropharyngeal/hypopharyngeal carcinoma
Supportive therapy in oncology
Read moreShe received her medical education in Russia. After completing her residency in Berlin, Dr. Steingraeber worked as a specialist and senior physician at the Charité, the Neukölln Hospital in Berlin and in the practice of radiooncology. Dr. Steingraeber speaks fluent Russian. Her clinical specialization includes bronchial carcinoma and breast carcinoma.
Membership/Committee Service:
DEGRO, ARO, DKG, AGSMO
Member of interdisciplinary committees for the development of guidelines:
Esophageal carcinoma
Anal carcinoma
Oropharyngeal/hypopharyngeal carcinoma
Supportive therapy in oncology
Head of Teaching at the Puerto Vallarta Regional Hospital
2020-2023
Medical records manager at the Regional Hospital of Puerto Vallarta 2 months 2020
General practitioner in private medical office
2015-2022
Doctor in charge of weight control clinic
2013-2014
Medical assistant in dermatology clinic
2008-2013
Medical Assistant in Dermatological procedures.
Medical Assistant in minimally invasive surgical procedures
Operation of fractional laser machine - IPIXEL-ER and
facial rejuvenation with IPL.
Experience in laser hair removal with Intense Pulsed Light and
radiofrequency
Experience with ultrasonic cavitation
Experience with ultraviolet (UV) light phototherapy machine for the
treatment of psoriasis and vitiligo.
Experience assisting in Botox and Fillers procedures.
Biomagnet certified by the Higher Institute of Biomagnetism
doctor ISAAC GOIZ DURAN
Experience in clinical records
Training in continuing education and professional development of teachers
Read moreHead of Teaching at the Puerto Vallarta Regional Hospital
2020-2023
Medical records manager at the Regional Hospital of Puerto Vallarta 2 months 2020
General practitioner in private medical office
2015-2022
Doctor in charge of weight control clinic
2013-2014
Medical assistant in dermatology clinic
2008-2013
Medical Assistant in Dermatological procedures.
Medical Assistant in minimally invasive surgical procedures
Operation of fractional laser machine - IPIXEL-ER and
facial rejuvenation with IPL.
Experience in laser hair removal with Intense Pulsed Light and
radiofrequency
Experience with ultrasonic cavitation
Experience with ultraviolet (UV) light phototherapy machine for the
treatment of psoriasis and vitiligo.
Experience assisting in Botox and Fillers procedures.
Biomagnet certified by the Higher Institute of Biomagnetism
doctor ISAAC GOIZ DURAN
Experience in clinical records
Training in continuing education and professional development of teachers
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
Read morePersonal 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
Personal information
Title: Professor Doctor
Branch: Radiation Oncology
Work History:
1 GATA Military Medical Faculty
2 Gayrettepe Florence Nightingale Hospital
3 T.R. Demiroğlu Bilim University \ Associate Professor
4 T.R Demiroğlu Bilim University \ Professor
Medical Specialties and Subspecialties:
1 Head and Neck Cancers
2 Radiation Oncology
Priority treatments:
1 Prostate cancer
2 Conformal treatments
Special advanced health technologies:
1 Truebeam Stx Technology
2 Halcyons
Education
1991 - Istanbul University Istanbul Faculty of Medicine
1996 - Istanbul University Cerrahpaşa Faculty of Medicine Radiation
Oncology Specialization Training
Read more
Personal information
Title: Professor Doctor
Branch: Radiation Oncology
Work History:
1 GATA Military Medical Faculty
2 Gayrettepe Florence Nightingale Hospital
3 T.R. Demiroğlu Bilim University \ Associate Professor
4 T.R Demiroğlu Bilim University \ Professor
Medical Specialties and Subspecialties:
1 Head and Neck Cancers
2 Radiation Oncology
Priority treatments:
1 Prostate cancer
2 Conformal treatments
Special advanced health technologies:
1 Truebeam Stx Technology
2 Halcyons
Education
1991 - Istanbul University Istanbul Faculty of Medicine
1996 - Istanbul University Cerrahpaşa Faculty of Medicine Radiation
Oncology Specialization Training
Associate Professor Dr. Yusuf AÇIKGÖZ
Specialization: Medical Oncology
Education:
Professional Experience:
Clinical Trials, Courses, Certifications:
Clinical Trials:
Courses:
Certifications:
Memberships:
Associate Professor Dr. Yusuf AÇIKGÖZ
Specialization: Medical Oncology
Education:
Professional Experience:
Clinical Trials, Courses, Certifications:
Clinical Trials:
Courses:
Certifications:
Memberships:
Medical Radiation Oncologist
Medical Radiation Oncologist
Cumhuriyet University Faculty of Medicine, 2004
Istanbul Haydarpaşa Training and Research Hospital Internal Medicine Residency, 2010
Karadeniz Technical University Faculty of Medicine Medical Oncology Residency, 2015
MD Andeson Cancer Center, USA, 2008
Sunnybrook Odette Cancer Center Breast Cancer Clinic, Canada, 2017
Moffit Cancer Center , USA 2022
Istanbul Haydarpaşa Training and Research Hospital Internal Medicine, 2010
İdil State Hospital Internal Medicine Clinic, 2011
Karadeniz Technical Universityniversitesi Faculty of Medicine, Medical Oncology Clinic, 2015
Istanbul Göztepe Training and Research Hospital, Medical Oncology Clinic, 2018
Yeniyüzyıl University Gaziosmanpaşa Hospital, Medical Oncology Clinic, 2020
Ataşehir Medicana Hospital, Medical Oncology Clinic, 2022
Turkish Medical Association (TTB)
Turkish Society of Medical Oncology (TTOD)
European Society for Medical Oncology (ESMO)
American Society of Medical Oncology (ASCO)
Medical Intrests
Cumhuriyet University Faculty of Medicine, 2004
Istanbul Haydarpaşa Training and Research Hospital Internal Medicine Residency, 2010
Karadeniz Technical University Faculty of Medicine Medical Oncology Residency, 2015
MD Andeson Cancer Center, USA, 2008
Sunnybrook Odette Cancer Center Breast Cancer Clinic, Canada, 2017
Moffit Cancer Center , USA 2022
Istanbul Haydarpaşa Training and Research Hospital Internal Medicine, 2010
İdil State Hospital Internal Medicine Clinic, 2011
Karadeniz Technical Universityniversitesi Faculty of Medicine, Medical Oncology Clinic, 2015
Istanbul Göztepe Training and Research Hospital, Medical Oncology Clinic, 2018
Yeniyüzyıl University Gaziosmanpaşa Hospital, Medical Oncology Clinic, 2020
Ataşehir Medicana Hospital, Medical Oncology Clinic, 2022
Turkish Medical Association (TTB)
Turkish Society of Medical Oncology (TTOD)
European Society for Medical Oncology (ESMO)
American Society of Medical Oncology (ASCO)
Medical Intrests