Page 6 - Best Tumor Marker Blood Test doctors: TOP 211 doctors

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

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.

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

Assoc. Prof. Ayşe İrem Yasin, M.D., is a medical oncologist who specializes in solid tumors. Her clinical focus includes breast, lung, gastrointestinal, gynecologic, and urologic cancers. She also treats brain and other CNS tumors, soft tissue sarcomas, head and neck cancers, adenocarcinomas, melanoma, Merkel cell carcinoma, and cancers of unknown primary. She practices at Medipol Acıbadem District Hospital (2025–present). She previously worked at Şişli Etfal Training and Research Hospital (2023–2025).

She completed a Medical Oncology fellowship at Bezmialem Vakıf University (2019–2022). This followed an Internal Medicine residency at the same institution (2012–2016). Her international experience includes the Breast Cancer Unit at the University of Piemonte Orientale in Novara (2022). She also trained at Basel University Hospital, Cleveland Clinic, and Harvard Medical School. She holds the ESMO Board Certificate (2022).

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.

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. Joseba Rebollo Liceaga is a seasoned medical oncologist with a comprehensive background in oncology.​

Education and Training:

Graduated in Medicine and Surgery from the University of Navarra (1985).​

Completed residency in Oncology in 1987.​

Specialist in Medical Oncology at the Clínica Universidad de Navarra (1991).​

Professional Experience:

Head of the Oncology Department at Clínica San Miguel de Navarra (1991–2004).​

Associate Physician at the University Clinic of the Faculty of Medicine, University of Navarra (1995–2002).​

Adjunct Physician at the Oncology Platform, Hospital Quirónsalud Torrevieja (2004–2014).

Head of the Oncology Department at Hospital General de Villalba (2014–2019).​

Currently practices as a Medical Oncology Specialist at Quirónsalud Alicante.​

Certifications and Training:

Completed multiple accredited courses in Multidisciplinary Oncology between 2003 and 2006.​

Research and Publications:

Authored research on electrochemotherapy and multidisciplinary treatment approaches in oncology.

Experience

2017 - 2019 Okan University Hospital

2019 - Medipol University Pendik Hospital

Education

2016 Marmara University Faculty of Medicine, Chest Diseases

2007 St. Cyril and Methodius University, Faculty of Medicine

Publications

1- Frequency of Immunodeficiency in Adult Non-Cystic Fibrosis Bronchiectasis Patients; Specialization Thesis

2- Canan Cimşit, Melahat Bekir, Sait Karakurt, Emel Eryüksel, Ultrasonographic evaluation of diaphragm thickness in COPD – Marmara Medical Journal 2016; 29:8-13

3- Emel Eryuksel, Canan Cimsit, Melahat Bekir, Çagatay Cimsit, Sait Karakurt, Diaphragmatic Thickness Fraction in Subjects at High Risk for COPD Exacerbations Respiratory Care December 2017

4- Melahat Bekir, T. Bahadır Üskül, Pulmonary Functions in Patients With Idiopathic Scoliosis The Journal of Turkish Spinal Surgery ; April 2017

5- Emel Eryuksel, Canan Cimsit, Melahat Bekir, Cagatay Cimşit, Sait Karakurt, Is Diaphragmatic Thickness fraction valuable in Identifying High-Risk Chronic Obstructive Pulmonary Disease Patients, European Respiratory Journal Sep 2017

6- Melahat Bekir Külah, Şehnaz Olgun Yıldızeli, Derya Kocakaya, Berrin Ceyhan, The Effect of Clinical Findings on One-Year Disease Course in Adult Bronchiectasis Patients Other Than Cystic Fibrosis, 21st Annual Congress of the Turkish Thoracic Society _ Belek, Turkey 2018

7- Melahat Bekir Külah, Şehnaz Olgun Yıldızeli Derya Kocakaya, Emel Eryüksel, Elif Karakoç Aydıner, İsmail Öğülür, Berrin Bağcı Ceyhan, Quality of Life in Adult Bronchiectasis Patients Other Than Cystic Fibrosis: The Role of Psychological Status and Disease Severity 20th Annual Congress of the Turkish Thoracic Society – Belek Türkiye 2017

8- Berrin Ceyhan, Melahat Bekir, Şehnaz olgun Yıldızeli, Derya Kocakaya , Emel Eryüksel, Validity and reliability of the Turkish version of the EMBARC (European Bronchiectasis Audit and Research Collaboration) quality of life scale in patients with non-cystic fibrosis bronchiectasis. Turkish Thoracic Society 20th Annual Congress – Belek, Turkey 2017 (POSTER AWARD WINNER)

9- Melahat Bekir, Şehnaz Olgun Yıldizeli, Derya Kocakaya, Hüseyin Arıkan, Emel Eryüksel, Berrin Bağcı Beyhan, Relationship Between Vitamin D Levels and Lung Functions, Clinical Indexes, Anxiety-Depression Symptoms in Adult Non-Cystic Fibrosis Bronchiectasis Patients – 19th Annual Congress of the Turkish Thoracic Society - Belek, Turkey 2016

10- Melahat Bekir, Derya Kocakaya, Şehnaz Olgun, Berrin Bağcı Ceyhan, Anticoagulant Treatment Approach in a Case of Venous Thrombosis Causing Superior Vena Cava Syndrome with Active Bleeding – 18th Annual Congress of the Turkish Thoracic Society – Belek, Turkey 2015

11- Melahat Bekir, Berrin Bağcı Ceyhan, Life-Threatening Bleeding After Anticoagulation with Rivaroxaban: Two Case Reports, 18th Annual Congress of the Turkish Thoracic Society – Belek, Turkey 2015

12- Şehnaz Olgun Yıldızeli, Çagatay Nuri Cimşit, Semiha Emel Eryüksel, Canan Cimşit, Melahat Bekir, Tuğçe Yakut, The Relationship of Pulmonary CT Angiography with Clinical Scores in Pulmonary Embolism – Turkish Thoracic Society 18th Annual Congress – Belek Turkey 2015

13- Melahat Bekir, Canan Cimşit, Hüseyin Arıkan, Derya Kocakaya, Şehnaz,Olgun, Semiha Emel Eryüksel, Sait Karakurt, Diaphragm Thickness in COPD Patients and Its Relationship with Symptoms, Turkish Thoracic Society 17th Annual Congress – Belek, Turkey 2014

14- Melahat Bekir Külah, Frequency of Immunodeficiency in Patients with Non-Cystic Fibrosis Bronchiectasis and its Relationship with Clinical Parameters, 20th Annual Congress of the Turkish Thoracic Society – Belek Türkiye 2017

15- Berrin Ceyhan, Melahat Bekir Külah, Şehnaz Olgun Yıldızeli, Derya Kocakaya, One Year Follow-Up of Respiratory Health Outcomes in Adult Patients with Non-Cystic Fibrosis Bronchiectasis ERS 2018

16- Melahat Bekir, Şehnaz Olgun Yıldızeli, Derya Kocakaya, Emel Eryüksel, Elif Karakoç, İsmail Öğülür Berrin Bağcı Ceyhan Immun Deficiency in Patients with Non Cystic Fibrosis Bronchiectasis and Relationship with Clinical Parameters ATS Conference 2017- Washington, DC 2017

17- Melahat Bekir Külah, Sehnaz Olgun Yildizeli, Derya Kocakaya, Emel Eryuksel, Berrin Bagci Ceyhan Health Related Quality of Life Among Adult Patients With non Cf Bronchiectasis: The Role of Psychological status and disease severity ERS International Congress 2017, Milan Italy 2017

18- Melahat Bekir, Şehnaz Olgun Yıldızeli, Derya Kocakaya, Hüseyin Arıkan, Emel Eryüksel, Berrin Bağcı Ceyhan The Relationship Between Vitamin D Level and Lung Function, Severity and Clinical Indices, Depression and Anxiety Symptoms in Adult Patients With Non-Cystic Fibrosis Bronchiectasis ATS Conference 2016 - San Francisco , California 2016

Education

Doctor of Medicine (M.D.) degree from Faculty of Medicine, Ramathibodi Hospital, Mahidol University, 2022

Certifications

Certification of Anti-aging and Regenerative Medicine from The American Board of Antiaging and Regenerative Medicine (ABAARM)

Certification of Nutritional Wellness from The American

Naturopathic Certification Board (ANCB)

Clinical Focus

General disease diagnosis and treatment, as well as wellness care

Languages spoken: Thai and English

Professor Jair Bar, MD, PhD, is a thoracic oncologist and Deputy Director of the Cancer Center at Sheba Medical Center. He leads the Thoracic Oncology Unit. He treats lung cancer, including advanced non-small cell cases. His care includes medical oncology, radiotherapy, immunotherapy, and targeted therapy.

He runs a translational research lab focused on resistance to immunotherapy. He has published on exhaled-breath cancer metabolism and on angiogenesis inhibition in lung cancer.

He has chaired the Israel Lung Cancer Group since 2003. He is a member of the Israel Society of Clinical Oncology and Radiotherapy, the American Society of Clinical Oncology, and the American Association for Cancer Research. He is board-certified in Medical Oncology and Radiotherapy Oncology. He is a Senior Lecturer at Tel Aviv University.

The doctor is a highly experienced oncologist with a focus on cancer treatment and management. With years of dedicated practice, the doctor has contributed significantly to advancements in oncology, implementing cutting-edge therapies and participating in research aimed at improving patient outcomes. The doctor is recognized for their leadership within the oncology community, having served in key roles that drive innovation and quality care in cancer treatment. Their clinical expertise is complemented by a commitment to patient-centered care and ongoing professional development.

Prof. Elad Jacoby, MD, heads the Pediatric Cell Therapy Center at Sheba Medical Center. He is the Medical Director of the Advanced Biotherapy Center. He is a pioneer of pediatric CAR T‑cell therapy in Israel. He led one of the first national leukemia programs. He has almost 20 years of clinical and research experience.

He specializes in CAR T‑cell therapy, bone marrow and stem cell transplantation, and high‑risk pediatric leukemias and lymphomas. He leads international clinical trials and has authored over 240 publications. His collaborations include Johns Hopkins Hospital and the U.S. National Cancer Institute. He is an Associate Professor at Tel Aviv University. He received his MD from Tel Aviv University, completed residency at Sheba Medical Center, and fellowships at Johns Hopkins and the National Cancer Institute. He is board‑certified in Pediatrics and in Pediatric Hematology and Oncology. He serves on the IBFM CAR T‑Cell Taskforce and the Sheba Institutional Review Board. He leads the integration of CAR T‑cell therapy with transplantation.

Dr. Yaacov Lawrence, MA, MBBS, MRCP, is Chair of Radiation Oncology at Sheba Medical Center. He has nearly 30 years of experience in precision radiation oncology and neuro-oncology.

He is an expert in advanced radiation therapy and radiosurgery. He performs stereotactic radiosurgery for brain tumors. He leads Sheba’s GI Cancer Program in gastrointestinal oncology. He also provides precision care for lung and prostate cancers. He pioneered celiac plexus radiosurgery for severe pain from pancreatic cancer.

Training and credentials: MA and MBBS (Cambridge and UCLH); MRCP (RCP); Radiation Oncology fellowship (Thomas Jefferson University). Honors include the ASCO Young Investigator Award and Fellow of ASTRO (FASTRO). He has authored over 280 publications. He is Director of the Center for Translational Radiation Oncology and an Associate Professor at Tel Aviv University.

Dr. Eytan Aharon Ben‑Ami, MD, is a Senior Physician in the Sarcoma and Bone Oncology Service at Sheba Medical Center. He heads the Oncology Division and the Early-Phase Clinical Trials Unit. He founded the Sheba Clinical Research Organization. He is an academic affiliate at Tel Aviv University.

He specializes in sarcomas and primary bone tumors, including soft tissue sarcoma, liposarcoma, leiomyosarcoma, and osteosarcoma. He leads Phase I trials in targeted therapy and immunotherapy. He designs personalized treatment plans for rare cancers. He also develops patient-centered programs, including pilots in advanced immunotherapy delivery.

He completed a fellowship in Sarcoma and Bone Oncology at the Dana-Farber Cancer Institute/Harvard Cancer Center. He has authored more than 40 publications on early detection, molecular and viral mechanisms, and new cancer therapies.

Dr. Iris Kventsel, MD, is a pediatric hemato-oncologist and bone marrow transplant (BMT) specialist at Sheba Medical Center. She is an attending physician in the Pediatric Hemato-Oncology and BMT Division at the Edmond and Lily Safra Children’s Hospital. Her clinical focus is pediatric sarcomas, including Ewing sarcoma, osteosarcoma, and rhabdomyosarcoma.

She provides multidisciplinary care, including transplant and cellular therapies. She also uses current chemotherapy protocols and targeted therapies for complex childhood cancers.

Her research focuses on genetic cancer predisposition, including Li-Fraumeni syndrome, and cancer susceptibility genes. She has published in pediatric oncology, stem cell biology, and surgical oncology (HIPEC). She is on the academic staff at Tel Aviv University. Education: MD, Technion; Pediatrics residency, Assaf HaRofeh; Pediatric Hemato-Oncology fellowship, Sheba.

The doctor is a gynecologist specializing in endoscopic and laparoscopic operations. With a focus on minimally invasive surgical techniques, the doctor is skilled in performing advanced procedures that enhance patient recovery and outcomes. The doctor has extensive experience in handling complex gynecological cases, utilizing cutting-edge technology to provide optimal care.

The doctor is an experienced oncohematologist specializing in the treatment of blood cancers and related disorders. With a focus on innovative therapies and personalized patient care, the doctor has contributed significantly to advancements in the field. The doctor is affiliated with several leading medical institutions and has published numerous research papers in peer-reviewed journals.

The doctor is also actively involved in clinical trials aiming to improve outcomes for patients with hematological malignancies. Board-certified in hematology and oncology, the doctor is recognized for expertise in both clinical practice and research.

Dr. Hila Magen, MD, leads the Multiple Myeloma and Amyloidosis Unit at Sheba Medical Center. She is a hemato-oncologist with over 35 years of experience. She is a leading Israeli expert in multiple myeloma and plasma cell disorders.

She runs a program that provides personalized care and early access to clinical trials. This includes CAR-T therapy for high-risk and relapsed or refractory myeloma and amyloidosis. Dr. Magen is a principal investigator in point-of-care CAR-T studies. She brings new immunotherapies into routine care.

Training: Fellowships in Multiple Myeloma (UAMS) and Lymphocytic Leukemia (MD Anderson). Academic: Instructor, Tel Aviv University. Research: Author of 100+ publications, contributor to landmark myeloma studies, and reviewer for international journals.

Prof. Avichai Shimoni, MD, is Director of Bone Marrow Transplantation at Sheba Medical Center. He is a hemato-oncologist with over 30 years of experience in bone marrow transplantation, cellular therapies, and advanced blood cancer care.

He leads a high-volume program for complex, high-risk blood cancers. He performs allogeneic and autologous transplants. He also provides CAR T-cell therapy for leukemia, lymphoma, and multiple myeloma. He completed a bone marrow transplantation fellowship at MD Anderson Cancer Center.

He is Chairman of Hematology at Tel Aviv University and a Professor of Hematology. He has authored more than 250 scientific papers. His research focuses on CAR T-cell therapy and stem cell transplantation. He is often listed among Israel's Best Doctors (Forbes 2025 and 2026).