Best Oncology Doctors Abroad

Dr. Koravee Wirojskoolchai is a board-certified general surgeon at PMG Hospital in Bangkok. He earned his medical degree at Rangsit University. His primary certification comes from Somdech Phra Pinklao Hospital, Royal Thai Navy Medical Department. Dr. Wirojskoolchai also holds certification in anti-aging and nutritional medicine.

• Trained in JCI Hospital Standards and International Healthcare Service Standards.
• Completed specialized training in medical informatics for hospital development.
• Participant in the Thai Chelation Medical Association’s therapy seminars.
• Works at PMG Hospital, which holds Global Healthcare Accreditation for international services.

Dr. He Weibing is a pioneer of argon-helium cryoablation in China with more than 20 years of frontline practice. He was a founding member of Fuda Cancer Hospital (Guangzhou). He co-founded its Minimally Invasive Tumor Treatment Center and served as Executive Deputy Director. He also helped found the Ablation Group of the China Anti-Cancer Association. He has been the primary operator in more than 10,000 procedures.

He specializes in tumor cryoablation and is proficient in 125I seed brachytherapy, with a focus on liver and lung cancers. He proposed ten argon-helium techniques. Key co-authored data include: lung cryotherapy n=508; NSCLC n=120 (CR 25.5%, PR 41.8%, 6/12/24-month survival 64%/55%/36%); pancreatic cancer n=38 (median survival 12 months). He served on editorial boards in 2008 and 2010. He has been a national trainer for Varian and Boston Scientific since 2001.

Dr. Ayshe Okumush is a radiation oncologist at Private NeoLife Medical Center. She earned her MD from Karadeniz Technical University in 2003. She completed a residency in radiation oncology at Sisli Etfal Training and Research Hospital from 2006 to 2011.

She served as a specialist at Diyarbakir Uckuyular Training and Research Hospital from 2011 to 2013 and at Sisli Etfal from 2013 to 2016. She then worked at Yeni Yuzyil University Private Gaziosmanpasa Hospital from 2016 to 2026. She joined NeoLife in 2026.

Memberships: Turkish Society for Radiation Oncology (TROD) and the European Society for Radiotherapy and Oncology (ESTRO). Clinical focus: SRS, SRT, SBRT; VMAT, IMRT; radiotherapy for head and neck, lung, and brain tumors; SGRT, TBI, and 3D brachytherapy.

Prof. Ido Nachmany heads the Second Surgical Department at Sheba Medical Center in Israel. He was recognized by Forbes as one of the country's top physicians. Prof. Nachmany specializes in robotic surgery for the liver, pancreas, and bile ducts. He focuses on treating gastrointestinal neuroendocrine tumors using minimally invasive techniques.

• Board certified in General Surgery, HPB Surgery, and Abdominal Organ Transplantation.
• Completed surgical fellowships at the prestigious Thomas E. Starzl Transplantation Institute.
• Performs complex Whipple procedures and robotic low anterior resections.
• Author of numerous surgical oncology studies in journals like Cancer Research.

Dr. David Kuczer is a radiation oncologist at Amethyst Radiotherapy in Vienna. He specializes in precise cancer treatment for tumors of the prostate, breast, and brain. Dr. Kuczer presents every patient case to an interdisciplinary tumor board. This ensures each person receives a validated treatment plan from a team of experts.

• Uses the Elekta Versa HD linear accelerator for precise tumor targeting.
• Treats complex conditions including glioblastoma, lung cancer, and meningioma.
• Coordinates care within a clinic ranked among Newsweek's World's Best Hospitals 2026.
• Provides IMRT, VMAT, and stereotactic radiosurgery for high-accuracy radiation.

Dr. Almog Ben Yaacov is a senior surgical oncologist at Sheba Medical Center. He has performed over 200 HIPEC procedures for complex abdominal cancers. He focuses on treating gastric cancer, sarcoma, and colorectal malignancies. Dr. Ben Yaacov holds board certifications in both General Surgery and Surgical Oncology.

• Completed surgical oncology training at Memorial Sloan Kettering in New York.
• Uses NanoKnife and microwave liver ablation for targeted tumor treatment.
• Maintains ESSO certification for cytoreductive surgery and HIPEC.
• Works at Sheba Medical Center, ranked among the world’s top 10 hospitals.

Dr. Amit Tirosh is the Head of the Neuroendocrine Tumors (NET) Service at Sheba Medical Center. He is an international authority on von Hippel–Lindau (VHL) disease and hereditary tumor syndromes. Dr. Tirosh contributed to global clinical guidelines for VHL management. He also leads the Endocrine Oncology Bioinformatics Lab at Sheba.

• Contributor to the international expert panel on VHL management guidelines.
• Authored over 40 peer-reviewed papers in journals like JAMA and Gastroentrology.
• Maintains research affiliations with the NIH and the Weizmann Institute.
• Performs specialized NET treatments, including Lutetium-177 therapy and PRRT.

Dr. Shira Felder leads the Gynecologic Oncology Service at Sheba Medical Center. She is a senior radiation oncologist specializing in gynecologic and urologic cancers. She trained at the Princess Margaret Cancer Centre in Toronto. Dr. Felder focuses on delivering targeted radiation while preserving her patients' quality of life.

• Uses precision techniques including VMAT, IMRT, SBRT, and brachytherapy.
• Treats cervical, uterine, ovarian, and prostate cancers.
• Maintains membership in the European Society for Radiotherapy & Oncology.
• Works at Sheba Medical Center, ranked 7th globally by Newsweek.
• Conducts research on brachytherapy safety and cervical cancer survival.

Dr. Dov Zippel is a surgical oncologist and head of the Meirav Breast Center. Forbes Israel named him to its Best Doctors list in 2025. He treats benign and malignant breast tumors and melanoma at Sheba Medical Center. Dr. Zippel completed a surgical oncology fellowship at the University of Calgary in Canada.

• Performs breast-conserving surgery and minimally invasive skin cancer procedures.
• Treats patients at the Ella Lemelbaum Institute for Immuno-Oncology.
• Researches perioperative treatments for stage III melanoma and breast lesion excision.
• Works at Sheba Medical Center, ranked 7th worldwide by Newsweek in 2026.

Dr. Zvi Cohen is the Director of the Neurosurgery Department at Sheba Medical Center. He was recently recognized in Forbes Israel’s Best Doctors list for 2025. Dr. Cohen specializes in treating complex brain, pituitary, and spinal cord tumors. He founded the brain tumor tissue bank at Sheba to support oncological research. Dr. Cohen is board-certified in neurosurgery and leads clinical trials for malignant brain tumors.

• Completed fellowships in neurosurgical oncology at MD Anderson and neuroradiology at Beth Israel.
• Expert in intraoperative MRI, stereotactic biopsies, and image-guided resections.
• Performs radiosurgery and minimally invasive microsurgery for CNS tumors.
• Member of the Society for Neuro-Oncology and the Israeli Association of Neurological Surgeons.

Leads one of Italy's most recognized High Volume Centers for esophageal surgery – 2,000+ surgical cases annually at San Raffaele.

• Head of Gastrointestinal Surgery Department since 2014
• Specializes in both open and minimally invasive foregut procedures
• 300+ publications on esophageal diseases
• Member of International Society for Diseases of the Esophagus

Performed a pioneering fetal spina bifida surgery in 2019 – Professor Mortini leads the Experimental Neurosurgery Unit at San Raffaele.

• specializing in minimally invasive brain and spine surgeries
• Uses neuronavigation and neuromapping for precision and faster recovery
• Patented a method for biological tissue regeneration
• Visiting Professor at George Washington University

8,000+ urology surgeries – Prof. Montorsi pioneers robotic and minimally invasive techniques at San Raffaele.

• Director of Italy's leading Urological Research Institute
• First non-American to win the Hugh Hampton Young Award
• Developed a groundbreaking vein-patching technique
• Published over 1,000 papers in urology
• Honorary fellowship from the Royal College of Surgeons

Professor Doctor Sefik Igdem specializes in radiation oncology, using advanced Truebeam Stx and Halcyons technologies for precise head and neck cancer treatments at Gayrettepe Florence Nightingale Hospital.

• Over 30 years of experience in radiation oncology
• Expert in conformal treatments for precise tumor targeting
• Professor at T.R. Demiroğlu Bilim University – trains future oncologists
• Specializes in minimizing side effects with advanced radiation techniques

Dr. Mehmet Salih Iyikesici is a medical oncologist. His work focuses on metabolically supported chemotherapy (MSCT), ketogenic diet–supported cancer care, hyperthermia, hyperbaric oxygen therapy, and insulin potentiation therapy. He emphasizes care for breast, pancreatic, and gastric cancers.

He is a Medical Oncology Specialist at Neolife Medical Center (2026–present). He previously served at Private Bahçelievler Medical Park (2013–2026), Medicana Beylikdüzü (2010–2013), Silivri Anadolu (2009–2010), Diyarbakır Training and Research (2008–2009), and Bursa Çekirge State (2006–2008). Earlier, he worked as an Internal Medicine Specialist (1997–2003). He was an Assistant Professor at Altınbaş University (2014–2026).

Training: Medical Oncology subspecialty, Marmara University (2003–2006). Internal Medicine, Istanbul Haydarpaşa Numune (1992–1996). Medicine, Uludağ University (1985–1990). Member, Medical Oncology Association (since 2004). His recent research (2019–2020) covers gastric, breast, pancreatic, and lung cancers. Topics include long‑term survival in metastatic pancreatic cancer and feasibility in metastatic non‑small cell lung cancer (NSCLC).

Dr. Einat Shacham Shmueli is a senior medical oncologist at Sheba Medical Center. She specializes in gastrointestinal cancers, treating the colon, stomach, and pancreas. Dr. Shacham Shmueli holds dual board certifications in oncology and gastroenterology. She trained at UCSF in the United States. Her clinic at Sheba Medical Center is ranked among the top 10 hospitals worldwide.

• Authored over 25 peer-reviewed publications on tumor biology and new treatments.
• Serves as an investigator for the National Cancer Institute (NCI) programs.
• Manages metastatic disease using precision diagnostics and specialized biomarkers.
• Member of the Israel Society of Oncology and Radiotherapy.