Page 5 - Best Tumor Marker Blood Test doctors: TOP 209 doctors

The doctor specializes in oncology, focusing on pre-surgical assessments, cancer detection, and providing second opinions on nutrition and lifestyle in cancer care. With a background in internal medicine, the doctor completed a research internship at M. D. Anderson Cancer Center and holds a doctoral dissertation from the Medical University of Vienna. The doctor served as head physician at the University Hospital of Internal Medicine I in Vienna and currently directs the Josefstadt Private Clinic. The doctor has published over 120 scientific papers and is a board member of the Austrian Society of Hematology and Oncology.

Gastroenterologist

Crohn's disease

Ulcerative colitis

Other autoimmune diseases

Gastritis

Ulcers of the stomach and duodenum

Precancerous conditions of the gastrointestinal tract

Irritable bowel syndrome

Chronic diarrhea

Chronic constipation, etc.

SPECIALIZATION:

Gastroenterologist

EDUCATION:

Azerbaijan State Medical University

COURSES:

Graduated from the Azerbaijan State Medical University. In different years, he participated in seminars held in Azerbaijan by German, Colombian, Swiss, Russian and Ukrainian specialists on "Basics of Homotoxicology", gastroenterology, isopathy, acupuncture and neurotherapy, and received the relevant certificates. At the Sisli Etfal Hospital Egitim Araştırma in Istanbul he attended the refresher courses on "Metabolic Disorders and Obesity", Ege University of Izmir on "Inflammatory Bowel Diseases" and at the same time he attended the Congress on Bioregulatory Drugs in Germany. He attended the courses held Individual Medical Association in Ankara, on the topic of "PRP-CGF and Serum Ozonation". Currently working as a gastroenterologist in the clinic of biological medicine. Has successful results in the treatment of a number of chronic diseases of the gastrointestinal tract.

EXPERIENCE:

21 years old

The doctor has over 34 years of expertise in Medical Gastroenterology, with a focus on interventional sonography, endoscopic therapy of Zenker Diverticulum, and endoscopic resection of intestinal cancer. Additional areas of specialization include Endobarrier and therapy of inflammatory bowel disease.

Holding a fellowship with the European Board of Gastroenterology and memberships in several prestigious liver study associations, the doctor has contributed to numerous national and international publications.

Graduated in human medicine from Hamburg, Marburg, and Giessen, and furthered studies in health management, earning a Master of Science in 1999.

Education & Expertise

• 1997 | Hacettepe University Faculty of Medicine – Medical Degree
• 2003 | Uludağ University Faculty of Medicine – Internal Medicine Specialization
• 2007 | Uludağ University Faculty of Medicine – Hematology Subspecialty

Professional Experience

• 1998 (May – September) | Practitioner, Dr. Salaha Health Center, Rize
• 1998 to 2003 | Research Assistant, Uludağ University Faculty of Medicine, Internal Medicine Department
• 2003 to 2007 | Hematology Subspecialist, Uludağ University Faculty of Medicine, Hematology Division
• 2007 to 2011 | Hematology Specialist, Bursa Ali Osman Sönmez Oncology Hospital (Compulsory Service)
• 2011 to 2013 | Hematology Specialist, Private Anadolu Health Center Bone Marrow Transplant Center, Gebze
• 2014 to 2015 | Assistant Professor, Yeditepe University Faculty of Medicine, Department of Internal Medicine
• 2015 to 2020 | Associate Professor, Yeditepe University Faculty of Medicine, Department of Internal Medicine
• 2020 to Present | Professor, Yeditepe University Faculty of Medicine, Department of Internal Medicine

Courses & Certifications

• Autologous and Allogeneic Stem Cell Transplantation Certificate
• Clinical Phytotherapy Application Certificate
• Flow Cytometry Experience Certificate
• EBMT Stem Cell Transplantation Course

Professional Memberships

• Turkish Medical Chamber
• Turkish Hematology Association (Full Member, No: 893)
• Turkish Therapeutic Apheresis Association (Current President)
• Geriatric Hematology Association
• Hematological Oncology Association
• EBMT (European Bone Marrow Transplantation)

Awards & Recognitions

• 2011 | 6th Turkish Therapeutic Apheresis Congress – Young Researcher Award

Education & Expertise

• 1998 to 2004 – Istanbul University, Istanbul Faculty of Medicine
• 2005 to 2009 – Düzce University, Internal Medicine Specialization
• 2009 to 2010 – Beytüşşebap State Hospital, Compulsory Internal Medicine Service
• 2010 to 2013 – Bülent Ecevit University, Medical Oncology Specialization
• 2013 to 2015 – Recep Tayyip Erdoğan University, Medical Oncology Compulsory Service
• 2015 to Present – Associate Professor, Recep Tayyip Erdoğan University
• 2015 to 2021 – Lecturer, Medical Oncology, Sakarya University Faculty of Medicine
• 2020 to Present – Professor, Sakarya University Faculty of Medicine
• 2020 to Present – Ph.D. Student, Inorganic Chemistry, Sakarya University

Experience

• 2008 – Cleveland Clinic, Rheumatology & Gastroenterology Rotation
• 2016 to 2017 – Northeastern University, The Center for Pharmaceutical Biotechnology and Nanomedicine, Boston, U.S.

Professional Memberships

• TTOD (Turkish Society of Medical Oncology)
• ASCO (American Society of Clinical Oncology)
• ESMO (European Society for Medical Oncology)

Education and Specialization

• Bachelor’s Degree: Çukurova University Faculty of Medicine (1987/1993)
• Medical Specialization: Department of Pediatrics, Fırat University (1993/2001)
• Subspecialty: Pediatric Neurology Unit, Hacettepe University (2002/2004)

Professional Experience

• General Practitioner: Mardin State Hospital, Emergency Department (1993/1996)
• Research Assistant: Faculty of Medicine, Fırat University (1996/2001)
• Lecturer: Faculty of Medicine, İnönü University (2001/2002)
• Subspecialty Research Assistant: Faculty of Medicine, Hacettepe University (2002/2004)
• Assistant Professor: Faculty of Medicine, İnönü University (2004/2008)
• Associate Professor: Faculty of Medicine, İnönü University (2008/2014)
• Professor: Faculty of Medicine, İnönü University (2014/2023)

Education and Specialization

• 2006: Kocaeli University Faculty of Medicine
• 2014: Akdeniz University Faculty of Medicine, Internal Medicine
• 2018: Akdeniz University Faculty of Medicine, Medical Oncology

Experience

• 2006 - 2008: Konya Derebucak District Hospital
• 2009 - 2015: Akdeniz University Hospital
• 2015: Antalya Kaş State Hospital
• 2015 - 2016: İnönü University Faculty of Medicine
• 2016 - 2021: Akdeniz University Hospital
• 2021 - 2023: Antalya Training and Research Hospital

The doctor is a Medical Oncologist and Radiotherapist with 33 years of experience, specializing in Oncology and Radiotherapy. They graduated from Hadassah University Hospital in Jerusalem, Israel, and hold qualifications in both Oncology and Radiotherapy.

Currently serving as the Head of the Gastrointestinal Cancer Center, the doctor is also a Senior Physician in the Oncology Department at Hadassah University Hospital. They have completed board exams in Oncology and Radiotherapy, and are a member of several professional societies, including the Israel Society of Clinical Oncology and the Israel Cancer Association.

Education and Specialization

• Bachelor’s Degree in Medicine (English) – Hacettepe University, 1997
• Master’s Degree – Department of Internal Medicine, Akdeniz University, 2004
• Ph.D. / Proficiency / Medical Specialization – Division of Gastroenterology, Akdeniz University, 2007

Experience

• Akdeniz University Faculty of Medicine 1998/2004
• Akdeniz University Faculty of Medicine  2004/2007
• Urfa Training and Research Hospital 2008/2009
• Akdeniz University Faculty of Medicine, Department of Internal Medicine, Division of Gastroenterology  2010/2011
• Akdeniz University Faculty of Medicine, Department of Internal Medicine, Division of Gastroenterology 2011/2013
• Akdeniz University Faculty of Medicine, Department of Internal Medicine, Division of Gastroenterology 2013/2017
• Medical Park Antalya Hospital, Gastroenterology Department and Organ Transplant Center

The doctor is a leading expert in the treatment of non-Hodgkin lymphoma and specializes in blood disorder treatment. With over 30 years of practice, the doctor heads the Hematology sector at Nordwest Clinic, focusing on advanced hematological care and research.

Dr. Irfan Cicin is a Professor of Medical Oncology at the Trakya University Faculty of Medicine (2015–present). He has over 20 years of medical oncology experience and has held academic roles since 2010.

Education: MD, Istanbul University – Cerrahpaşa (1991–1997). Residency in Internal Medicine, Trakya University (1997–2002). Fellowship in Medical Oncology, Trakya University (2002–2004).

Practice: Medical Oncologist, Trakya University (2005–2008). Medical Oncologist, Elazığ Training and Research Hospital (2008–2010). Associate Professor of Medical Oncology, Trakya University (2010–2015). He previously served as a physician in the Turkish Air Force at Etimesgut Military Hospital (2004–2005).

EDUCATION:

2015

Uludag University, Ophthalmology

2008

Eskisehir Osmangazi University, Faculty of Medicine

2001

Kırıkkale Science High School, Numerical

EXPERIENCE:

2019 Gazi University Faculty of Medicine Ophthalmology (Vitreo-Retinal Surgery and Medical Retina Fellowship)

2016 SBÜ Zekai Tahir Burak EAH (Retinopathy of Prematurity Fellowship)/

2015 - 2023 Kocaeli Derince Training and Research Hospital

2023 - Medipol University Pendik Hospital

EDUCATION:

2000 - SSK Okmeydanı Training and Research Hospital, .

1996 - Istanbul University, Istanbul Faculty of Medicine

EXPERIENCE:

2019 - Istanbul Medipol University Pendik Hospital

2017 - 2019 - Private Adatıp Kurtköy Hospital

2005 - 2017 - Private Avicenna Umut Hospital

2003 - 2005 - SSK Yalova Regional Hospital

2002 - 2003 - Kayseri Military Hospital

Prof. Zvi Cohen is Director of the Neurosurgery Department and the Neuro-Oncology Unit at Sheba Medical Center. He is a neurosurgeon and neuro-oncology expert. He was included in Forbes Israel’s Best Doctors 2025. He leads clinical research on drug therapies for malignant brain tumors. He also founded Sheba’s brain tumor tissue bank.

He is board-certified in neurosurgery. He trained at Tel Aviv University. He completed fellowships in neuroradiology at Beth Israel and in neurosurgical oncology at MD Anderson. His practice covers complex brain, pituitary, spine, and spinal cord tumors. He has expertise in stereotactic biopsies, image-guided resections, intraoperative MRI, navigation systems, and radiosurgery. He is a member of the Society for Neuro-Oncology and the Israeli Association of Neurological Surgeons.

Prof. Dr. Mehmet Sait Buğdacı is a highly experienced physician specializing in Internal Medicine and Gastroenterology. He completed his medical education and specialty training at Istanbul University Cerrahpaşa Faculty of Medicine and Şişli Etfal Training and Research Hospital. His clinical interests include gastrointestinal diseases, endoscopic procedures, and clinical research. He has contributed to medical education through numerous scientific publications and textbooks and currently sees patients at Central Hospital.

Areas of Interest • Pediatric gastrointestinal surgery • Anorectal malformations and motility disorders • Minimally invasive pediatric surgery • Pediatric colorectal and pelvic floor disorders

Dr. Cheon Won Seok is the Director of the Department of Gastroenterology at Naeun Hospital. His expertise includes gastrointestinal diseases; upper gastrointestinal endoscopy and colonoscopy; polypectomy; ESD (Endoscopic Submucosal Dissection); small-bowel capsule endoscopy; digestive disorders; gastric and esophageal cancer; Helicobacter pylori infection; liver diseases; and inflammatory bowel disease, including Crohn’s disease and ulcerative colitis.

He graduated from Kyung Hee University College of Medicine. He completed his internship at Kyung Hee Medical Center and his internal medicine residency at Hallym University Sacred Heart Hospital. He later served as a Clinical Instructor in Gastroenterology at Chung-Ang University Hospital. He is a full member of the Korean Association of Internal Medicine and a life member of the Korean Society of Gastrointestinal Endoscopy. He is also a board-certified subspecialist in gastrointestinal endoscopy and serves as a medical advisor to KBS, MBC, SBS, JTBC, and MBN.

Assoc. Prof. Atakan Topçu, M.D., is a medical oncologist at Medipol University and Medipol Acıbadem Regional Hospital. He treats solid tumors, including lung, breast, colorectal, gastric, and neuroendocrine cancers. His work also covers targeted therapies, immunotherapy, geriatric oncology, and cancer-related malnutrition, cachexia, and sarcopenia.

He has authored more than 50 peer-reviewed papers. Recent work includes a 2024 Frontiers in Medicine study on geriatric syndromes and a 2023 Future Oncology paper on sarcopenia and anxiety in lung cancer. He has also published on the CONUT score in breast cancer and on malnutrition in HER2-negative metastatic gastric cancer.

Dr. Topçu serves on the Editorial Board of BMC Cancer. He is a member of the Turkish Society of Medical Oncology, ESMO, and the Turkish Geriatrics Society. Education and training: M.D., Uludağ University; residency in Internal Medicine, Marmara University; fellowship in Medical Oncology, Bezmialem Vakıf University.

Dr. Ercan Ozden is a specialist in internal medicine and medical oncology. He earned his medical degree and completed his residency at Istanbul University, Cerrahpaşa Faculty of Medicine. He later received a subspecialty in medical oncology at Kocaeli University Faculty of Medicine from 2016 to 2020.

Dr. Ozden has worked in medical oncology at Şırnak State Hospital. He has also served as an internal medicine specialist at Bağcılar Private Safa Hospital and Küçükçekmece Batı Bahat Hospital. He has extensive clinical experience in both internal medicine and oncology.

Prof. Selin Kapan has been a Professor of General Surgery since 2017. She is currently with Istanbul Aydın University, Faculty of Medicine, Department of General Surgery (2022–present). She previously worked at Bakırköy Dr. Sadi Konuk Training and Research Hospital as a Specialist and Associate Professor. She also served as Educational and Administrative Supervisor at Kanuni Sultan Süleyman Training and Research Hospital. In addition, she was Medical Coordinator and General Surgeon at Istanbul Surgery Hospital.

She has authored or co-authored more than 50 peer-reviewed papers. Her research covers hernia repair, perianal fistula, pilonidal disease, hepatic hydatid disease, laparoscopic surgery, and gastrointestinal surgery. Her work has been published in journals such as Digestive Surgery, Hernia, Techniques in Coloproctology, and the Journal of Gastrointestinal Surgery. She is a member of the Turkish Surgical Association, the National Trauma and Emergency Surgery Association, the Hernia Society, the Turkish HPB Surgery Association, the Stem Cell and Cellular Therapies Association, and the Gastroesophageal Reflux Association.