88 Best Tumor Marker Blood Test Doctors in Istanbul

Dr. Ayşe İrem Yasin is a medical oncologist at Medipol Acıbadem District Hospital in Istanbul. She holds a prestigious ESMO Board Certificate. Dr. Yasin specializes in solid tumors, including breast, lung, and gastrointestinal cancers. She treats complex cases such as Merkel cell carcinoma and cancers of unknown primary.

• Trained at Harvard Medical School, Cleveland Clinic, and Basel University Hospital.
• Completed a clinical observership at the Breast Cancer Unit in Novara, Italy.
• Treats brain and CNS malignancies, soft tissue sarcomas, and urologic cancers.
• Works at a JCI-accredited facility equipped with the da Vinci robotic system.

Dr. Atakan Topcu is a medical oncologist at Medipol Acibadem District Hospital in Istanbul. He specializes in treating solid tumors including lung, breast, and colorectal cancers. Dr. Topcu is an Associate Professor with over 50 peer-reviewed scientific publications. He sits on the Editorial Board of the medical journal BMC Cancer.

• Expertise in immunotherapy, targeted therapies, and geriatric oncology care.
• Treats cancer-related malnutrition, cachexia, and sarcopenia.
• Maintains active membership in the European Society for Medical Oncology (ESMO).
• Works at a JCI-accredited hospital specializing in advanced oncology treatments.

The doctor completed specialization training in Radiation Oncology at Marmara University Faculty of Medicine from 2012 to 2016. Prior to this, the doctor completed an undergraduate degree in Medicine, taught in English, at the same institution from 2004 to 2011. The doctor has a strong foundation in medical education, beginning with high school education at Sixteen Numbered Shirvan School in Azerbaijan from 1998 to 2004.

Dr. Birol Baytan is a pediatric hematologist and oncologist at Emsey Hospital in Istanbul. He has performed over 950 bone marrow transplants for children. Dr. Baytan specializes in treating childhood cancers, leukemia, and lymphomas. He works at a JCI-accredited hospital with Turkey’s largest bone marrow transplant unit.

• Specializes in complex procedures like CAR T-cell therapy and haploidentical stem cell transplantation.
• Treats childhood bleeding diseases, vascular occlusion, and various types of anemia.
• Authored over 15 articles in international refereed journals and three medical books.
• Former Assistant Professor in Pediatric Hematology at Uludağ University.

Dr. Didem Tastekin is a medical oncologist at Biruni University Hospital in Istanbul. She specializes in breast and lung cancer treatment, including stage 4 cases. Dr. Tastekin received the TUBITAK Incentive Award for her work in cancer research. She is an active member of both ESMO and ASCO.

• Awarded Best Researcher of the Year at Istanbul University Oncology Institute.
• Treats complex cases at a TEMOS-accredited university hospital.
• Coordinates oncological check-ups and screenings for both men and women.
• Expert in diagnostics including PET-MRI, tumor markers, and organ biopsies.

Assoc. Prof. Orhan Ünal Zorba, MD, is a urologist focused on andrology and endourology. He has about 25 years of experience. He currently sees patients at Private TUSA Hospital. He started there on 8 June 2026.

His academic work includes 29 international and 13 national publications and 7 book chapters. He has given at least 9 presentations at international congresses. His studies have been presented at EAU, ESSM, ICS, and EULIS meetings. He served as Assistant and Associate Professor of Urology from 2009 to 2016. He is a member of the Istanbul Medical Chamber, the Turkish Association of Urology, the Turkish Society of Andrology, and the Eastern Black Sea Association of Urologists.

Key areas include male infertility (micro‑TESE; outcomes in 191 patients with non‑obstructive azoospermia), microsurgical varicocele repair, prostate surgery (HoLEP, TURP), endoscopic stone surgery (URS, PCNL), and uro‑oncology. He speaks English.

Prof. Dr. Abdullah Sakin is a professor of medical oncology. He treats solid tumors, including lung, breast, gastrointestinal, genitourinary, gynecologic, head and neck cancers, and melanoma.

He delivers personalized, evidence-based care. His treatments include chemotherapy, targeted therapy, immunotherapy, hormone therapy, and precision oncology. He has authored more than 200 scientific publications and takes part in international clinical research. This work advances patient-centered cancer care.

Dr. Ali Hakan Kaya is a hematologist at Biruni University Hospital in Istanbul. He won first prize from the Blood and Bone Marrow Transplantation Association for his research. Dr. Kaya specializes in stem cell transplants and treating complex blood cancers. He works at a TEMOS-accredited university hospital equipped with a dedicated hematology-oncology department.

• Performs allogeneic bone marrow transplants from both related and unrelated donors.
• Treats leukemia, myeloma, and various types of lymphoma using CAR T-cell therapy.
• Is a member of the Turkish Apheresis Society and the Hematologic Oncology Society.
• Received multiple awards for his scientific papers on hematologic immunology and oncology.

Prof. Dr. Gül Alço is a radiation oncologist with about 27 years of experience. She treats breast, lung, prostate, gastrointestinal, gynecologic, central nervous system, head and neck, soft tissue, and bone cancers with radiotherapy.

Her expertise includes adaptive radiotherapy and radiosurgery. She uses advanced radiation techniques to provide personalized, evidence-based care in a multidisciplinary, patient-centered setting.

Dr. Yilmaz Yozgat is a pediatric cardiologist at Medipol University Pendik Hospital in Istanbul. He specializes in treating children with complex heart and vascular diseases. Dr. Yozgat trained at the prestigious Gülhane Military Medical Academy. He manages challenging cases like dilated cardiomyopathy and pulmonary hypertension in young patients.

• Performs diagnostic heart check-ups, exercise tests, and carotid artery ultrasounds.
• Treats childhood cardiac conditions including arrhythmias and coronary artery disease.
• Served as a faculty member at Bezmialem Foundation University.
• Practices at a center featuring 21 intensive care units for newborns.

Dr. Nihat Okcu is a gastroenterologist and gastrointestinal surgeon at Medipol University Pendik Hospital. He specializes in the treatment of complex digestive conditions and liver diseases. Dr. Okcu has published over 20 academic papers on gastric cancer and endoscopic diagnosis. He serves at a hospital with a 95.4% healthcare quality score.

• Performs laparoscopic anti-reflux surgery and small intestine resections.
• Expert in gastric polyps removal and duodenal polyp excision.
• Treats chronic conditions like cirrhosis, Crohn’s disease, and ulcerative colitis.
• Provides diagnostic gastroscopy with biopsy and ultrasound-guided procedures.

Dr. Mehmet Soyarslan is an orthopedic surgeon at Medipol University Pendik Hospital in Istanbul. He specializes in robotic knee surgery and complex joint reconstruction. Dr. Soyarslan is a member of the Robotic Knee Surgery Association. He also serves the Turkish Orthopedics and Traumatology Association.

• Performs MAKOplasty total hip replacement and arthroscopic meniscectomy.
• Treats pediatric orthopedic conditions, including developmental hip dysplasia and scoliosis.
• Presented shoulder arthroscopy research at SICOT and SECEC–ESSE international congresses.
• Completed specialized cadaver training in advanced knee and ankle surgical techniques.

Dr. Tolga Akman is a Professor of Medicine at Medicana Hospital Bahcelievler in Istanbul. He specializes in uro-oncology and surgical treatments for complex urological conditions. Dr. Akman focuses on penis prosthesis surgery and treatments for prostate, bladder, and kidney cancer. He treats both adults and children for conditions like kidney stones and hypospadias.

• Performs radical and partial nephrectomy for kidney cancer treatment.
• Specializes in laparoscopic urology and robotic-assisted surgical techniques.
• Expert in penis enlargement and surgical correction of Peyronie's disease.
• Works at Medicana Bahcelievler, a JCI-accredited facility in Turkey.

Dr. Caglayan Altinbas is a physician at Medipol University Pendik Hospital in Istanbul. He specializes in rehabilitation for complex spinal cord injuries and pediatric cerebral palsy. Dr. Altinbas earned his medical degree from Marmara University and completed residency at Bezmialem Vakif University. He holds a certificate in Physical Medicine and Rehabilitation.

• Expertise includes orthopedic recovery and pediatric physical therapy programs.
• Treats patients at a clinic scoring 95.4 out of 96.4 for quality standards.
• Performs specialized rehabilitation for children with motor disabilities.
• Practices at a university-affiliated center serving 350,000 patients annually.

Dr. Adil Baykan is a general and oncological surgeon at Medistate Hospital Istanbul. He is a senior professor on the faculty of medicine at Ankara University. Dr. Baykan specializes in colorectal surgery and laparoscopic techniques for cancer treatment. He completed surgical training at the Mayo Clinic and the University of Minnesota.

• Completed a specialist fellowship in colorectal surgery at St. Mark's Hospital in London.
• Treats colon cancer, thyroid diseases, and breast conditions like fibrocystic disease.
• Performs complex procedures including colectomy, esophagectomy, and stomach resection.
• Published numerous articles on colon cancer in international medical journals.

The doctor is a highly experienced specialist in the field of neurosurgery, with a focus on advanced surgical techniques for treating complex brain and spinal disorders. With over 15 years of clinical experience, the doctor has performed numerous successful surgeries, contributing significantly to the field through innovative approaches and patient-centered care.

Graduated from a prestigious medical school and completed rigorous residency and fellowship programs. The doctor is board-certified and has published extensively in peer-reviewed journals, sharing insights and advancements in neurosurgical procedures.

Dr. Hamza Ugur Bozbey is a clinical oncologist at Uniqacare Clinic in Istanbul. He treats malignancies including glioblastoma, sarcoma, and stage 4 lung cancer. He manages solid tumors and hematological cancers such as leukemia and lymphoma, as well as rare conditions like chordoma and neuroendocrine tumors.

• Treats gynecologic, orthopedic, and neurological cancers.
• Uses chemotherapy and targeted therapy for stage 4 metastatic disease.
• Works at Uniqacare Clinic, which serves over 430,000 patients annually.
• Member of the Turkish Medical Association.

Dr. Isil Yurdaisik is a radiologist at Menfis Health Novimaj in Istanbul. She specializes in diagnostic imaging and interventional radiology. Dr. Yurdaisik conducted a study on radiation exposure in COVID-19 patients, focusing on reducing radiation doses during chest CT scans to follow safety guidelines for patient protection.

She treats conditions like fibrocystic breast disease and helps with weight loss procedures, using imaging for gastric balloon placements. She works at a clinic accredited by the Turkish Medical Association and authorized for international health tourism. Dr. Yurdaisik also gives online consultations to patients abroad.

Dr. Bengisu Ay is an infectious diseases specialist at Medipol University Pendik Hospital in Istanbul. She focuses on viral hepatitis, diabetic foot infections, and clinical microbiology. Dr. Ay has contributed to multi-center studies on antibiotic resistance and pathogen identification. She treats complex cases at a clinic that serves 350,000 patients annually.

• Specializes in the treatment of Chronic Hepatitis C and Mediterranean spotted fever.
• Authored research on epidermal growth factor for diabetic foot wounds.
• Former physician at Acipayam State Hospital and Bozyaka Training Hospital.
• Published international research on causative pathogens in bacterial infections.