Page 4 - Best PET/CT doctors: TOP 138 doctors

Univ.-Prof. Dr. Wolfgang Johannes Köstler is a board-certified specialist for Internal Medicine, Hematology/Oncology, and Intensive Care Medicine who specializes in hematology & internal oncology, intensive care medicine. He is one of the top-rated breast cancer and sarcoma oncologist specialists and has extensive experience in the field and has received degrees from the Medical University of Vienna and the Weizmann Institute of Science. He has also had special training at Memorial Sloan-Kettering Cancer Center and Royal Prince Alfred Hospital.

Dr. Hossein Taghizadeh is a highly regarded Austrian specialist in internal medicine, hematology, and medical oncology, known for his compassionate approach and commitment to personalized cancer care. With extensive experience in treating solid tumors and blood cancers, he represents a new generation of oncologists who integrate scientific progress with empathy and precision.

He studied medicine at the Medical University of Vienna, graduating in 2016, and began his residency in internal medicine and oncology shortly thereafter. His academic and clinical training at leading Austrian cancer centers equipped him with deep expertise in systemic cancer therapy, hematologic diseases, and palliative medicine.

2010–2016 – Studied medicine at the Medical University of Vienna.

2018 – Began residency in internal medicine and medical oncology, focusing on individualized treatment strategies.

2020s – Specialized in solid tumors, hematologic malignancies, and targeted therapy, contributing to multidisciplinary oncology care.

Today – Practices as an oncologist at Oncodoc and Wiener Privatklinik, providing diagnostics, systemic treatment, and follow-up for patients with gastrointestinal, urogenital, and hematologic cancers.

Dr. Taghizadeh’s clinical interests include gastrointestinal tumors, pancreatic and biliary cancers, genitourinary malignancies, and hematologic neoplasms. He works with advanced diagnostic tools and modern systemic therapies, including chemotherapy, targeted therapy, and immunotherapy.

Known for his calm professionalism, integrity, and patient-centered communication, Dr. Taghizadeh places great emphasis on evidence-based medicine and emotional support throughout the treatment journey. His work reflects a modern, holistic approach to oncology — one that values both medical excellence and the human experience behind every diagnosis.

Prof. Dr. med. Karl J. Oldhafer is a Senior Consultant of the Department of General and Abdominal Surgery and Surgical Oncology at the Abdominal Medical Center of the Barmbek Asklepios Hospital and is a specialist in hepatic surgery. His medical interests include radioservice computer-navigated liver surgery, metastasis surgery, surgery using the ultrasonic knife, minimally invasive abdominal surgery, hepatobiliary surgery, and pancreatic surgery.

Associate Professor Dr. Yusuf AÇIKGÖZ
Specialization: Medical Oncology

Education:

• 2004-2011: İnönü University Faculty of Medicine
• 2011-2016: Ankara Numune Training and Research Hospital, Internal Medicine
• 2017-2022: Health Sciences University, Medical Oncology

Professional Experience:

• 2016-2017: Bingöl City Hospital, Internal Medicine
• 2021-2022: Health Sciences University, Medical Oncology
• 2022-2023: Kastamonu Education and Research Hospital, Medical Oncology
• 2023-2024: Ohio State University, Medical Oncology
• 2024-Present: Lokman Hekim University, Medical Oncology, Ankara Hospital

Clinical Trials, Courses, Certifications:

Clinical Trials:

• 2017-2021: Phase III, CheckMate-649 Study (Assistant Investigator)
• 2022-Present: Phase III, Fortitude-101 Study (Assistant Investigator)

Courses:

• 2018: Medicres Basic and Advanced Biostatistics Training Program (ongoing), Istanbul-Vienna
• 2019: Immuno-Oncology Education Course, March 1-2, 2019, Vienna, Central European Cooperative Oncology Group (CECOG)
• 2018: Good Clinical Practice Certification, April 7-8, 2018, Ankara, Health Sciences University
• 2017: Basic Oncology Training Program, November 25-26, 2017, Adana, Clinical Oncology Society
• 2016: Basic Ultrasonography Course (10 hours theoretical + 10 hours practical), September 24-25, 2016, Ankara, Turkish Emergency Medicine Association

Certifications:

• Ongoing: ECFMG Certification
• 2024: CITI Responsible Conduct of Research (The Ohio State University)
• 2024: CITI IACUC-Laboratory Animal Research (The Ohio State University)
• 2024: CITI Human Subjects Protection (The Ohio State University)
• 2024: CITI Good Clinical Practice (The Ohio State University)
• 2023: Occupational English Test (OET)
• 2019: International English Language Testing System (IELTS), Total Score: 6.5, May 26, 2019, Ankara, British Council
• 2017: USMLE Step 2 CK Exam; Score: 244, February 7, 2017
• 2016: USMLE Step 1 Exam; Score: 215, August 25, 2016

Memberships:

• American Society of Clinical Oncology (ASCO) - 2022
• Turkish Society of Medical Oncology - 2020

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)

Dr. Liuying leads the Oncology Ward at Jinshazhou Hospital, Guangzhou University of Chinese Medicine. Clinical focus includes hepatocellular carcinoma, cholangiocarcinoma, and lung and colorectal cancers. Dr. Liuying has special expertise in melanoma and melanoma liver metastasis. Interventional skills include MWA, RFA, cryoablation, and radioactive seed implantation for non-vascular, minimally invasive tumor ablation.

Research: participated in two Guangdong Provincial science and technology projects. Contributed to the 2014 Expert Consensus for Thermal Ablation of Primary and Metastatic Lung Tumors. Published in the Chinese Journal of Lung Cancer. Compiled Selected Cases of Microwave Ablation for Lung Tumors and Selected Cases of Microwave Ablation for Liver Tumors.

Appointments: Standing Committee Member, Youth Committee of Intra-Tumor Brachytherapy Medicine, China Medical Education Association. Standing Committee Member, Minimally Invasive Interventional Medicine Professional Committee, Guangdong Primary Medical Association.

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. 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.

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

• 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

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 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

Dr. Yan Zhi Ping is the Director of the Radiology Department at Xiamen Humanity Hospital. He graduated from the First Military Medical University. He has authored more than 30 papers. He has edited and contributed to several monographs. He received a Fujian Provincial Third Prize for Science and Technology Progress and two Xiamen Municipal Second Prizes. His expertise includes CT and MRI of the central nervous system, musculoskeletal system, thoracic, and abdominal diseases. He also focuses on cerebral functional imaging. He is skilled in the early diagnosis and differential diagnosis of lung cancer and brain tumors.

Appointments: Standing Committee Member of the Radiology Branch of the Fujian Association of Integrative Medicine. Standing Committee Member of the Fujian Radiological Society. Vice Chairman of the Xiamen Radiological Society. Vice Chairman of the Radiology Branch of the Xiamen Medical Doctor Association. Deputy Director of the Xiamen Radiology Quality Control Center.

Dr. Baha Zengel is a general surgeon with expertise in breast, gallbladder, thyroid diseases, and hernia repairs. He graduated from Ege University Faculty of Medicine in 1990. In 2004, he earned a doctorate in Basic Oncology from Dokuz Eylül University. He became an Associate Professor of General Surgery in 2014 through the Inter-University Board.

Dr. Zengel is skilled in advanced surgical procedures. His experience includes skin and breast-conserving mastectomy, oncoplastic breast surgery, laparoscopic cholecystectomy, sentinel lymph node biopsy, and ROLL/SNOLL techniques. He has held important positions at Izmir Bozyaka Training and Research Hospital, including Education Officer.

He is a member of several professional associations. He serves on the Board of Directors of the Aegean Region Surgery Association and is a founding board member of the Basic Oncology Association.

Dr. Felix Dobritoiu is a thoracic surgeon at Ponderas Academic Hospital. He specializes in minimally invasive and robotic procedures for adults and children. He performs robotic thoracic surgery with the da Vinci Xi system. He also uses video-assisted thoracoscopic surgery (VATS), including uniportal VATS. These methods use small incisions for faster recovery.

His practice includes mediastinoscopy and bronchoscopy. He performs complex lung and mediastinal resections. He also offers sternochondroplasty (Nuss and reversed Nuss). In selected cases, he can perform minimally invasive procedures without postoperative pleural drainage.

Dr. LV Xiao Jun is the Executive Director of the Department of Medical Oncology. He is a national expert in psycho-oncology and has 30 years of clinical experience. He previously served at the First Affiliated Hospital of Xiamen University. He is a recognized expert in cancer treatment and lung cancer care in Fujian Province.

Clinical focus: comprehensive care for solid tumors, including lung, breast, and gastrointestinal cancers; palliative care in oncology; and screening and treatment for psychological distress.

Appointments: Standing Committee Member (third term), Psycho-Oncology Committee, Chinese Anti-Cancer Association; Standing Committee Member (third term), Lung Cancer Committee, Fujian Anti-Cancer Association.

Dr. Muhammed Mustafa Atci is an Associate Professor of Medical Oncology at İstinye University, Liv Hospital Topkapı (2025–present). He previously served as Associate Professor and Education Coordinator at Prof. Dr. Cemil Taşcıoğlu City Hospital (2023–2025). He was also a Medical Oncologist there (2018–2021).

He has been a member of ASCO and the Turkish Society of Medical Oncology since 2018. He is the author or co-author of 19 peer-reviewed international papers on colon, breast, gastric, pancreatic, lung, thyroid, sarcoma, and colorectal cancers.

Notable works include a multicentre study on stage IIB colon cancer survival (Journal of Chemotherapy). He also studied the De Ritis ratio for lung metastasis in testicular cancer (Current Urology). His prognostic studies used PET/CT, MSI, lymph node ratio, and metabolic tumor volume.

Assoc. Prof. Dr. Mehmet Salih İyikesici is a medical oncologist. He provides personalized care for breast, lung, and gastrointestinal cancers. He combines metabolically supported therapies with chemotherapy. His interests include the ketogenic diet in cancer care, hyperthermia, and hyperbaric oxygen therapy.

He has conducted and contributed to national and international scientific studies. Selected national peer-reviewed publications include Metabolic Supported Chemotherapy in Rectal Cancer (2020), NSCLC Patient Outcomes – Marmara University (2004), and Early-Stage Breast Cancer Outcomes (2004).