Page 14 - Best oncologists: TOP 653 doctors

Key facts and achievements

• - More than 20 years of experience in the treatment of complex pathologies of the brain using Gamma Knife radiosurgery , including functional disorders and tumor diseases.
• -Works in a team with Dr. Roberto Martinez Alvarez , a world-leading neurosurgeon and Gamma Knife specialist, providing a unique multidisciplinary approach to patient care.
• - International experience : Studied and collaborated with leading global institutions, including the Gregorio Marañon in Madrid and the Gustave Roussy Institute in Paris.

Specialization

• More than 7,000 patients have been treated in the Radiosurgery Department, including:
• - Benign tumors : meningiomas, schwannomas, pituitary adenomas.
• - Malignant pathologies : brain metastases and CNS tumors.
• - Vascular pathologies : arteriovenous malformations, cavernomas and fistulas.
• - Functional disorders : refractory epilepsy, tremor, trigeminal neuralgia and obsessive-compulsive disorder.

Scientific and professional activities

• - Member of the international Gamma Knife Consortium , led by the University of Pittsburgh .
• - Author of scientific research and protocols for the treatment of cancer using radiotherapy.
• - Participated in the development of the innovative project "Fusion of Medical Images" as part of oncology research.

Experience

2002-present | Attached to the Department of Gamma Radiosurgery and Functional Neurosurgery of Ruber International Hospital.

2002-2007 | Assistant, Department of Radiation Oncology, Ruber International Hospital.

2002| Medical Affairs Manager Medical Department Janssen-Cilag, SA Madrid

Qualification

2012|Doctor of Medicine and Surgery Madrid. Department of Surgery, Autonomous University of Madrid. Spain

2001 | Specialist in Radiation Oncology at the Gregorio Marañón University Hospital in Madrid. Training completed at the Gustave-Roussy Institute in Paris in 2000.

1995 | Graduate of the Faculty of Medicine and Surgery, Complutense University of Madrid. Spain.

2016-present | Member of the Ruber International Hospital Gamma Knife Radiosurgery Team, International Gamma Knife Consortium: Led by the Pittsburgh Hospital.

1999-2000| Project Manager: "Protocol for Pamidronate Treatment of Breast Cancer Patients with Predominantly Lytic Bone Metastases"

1999 | GICOR Study: "Incidence of Anemia in Patients Receiving Radiation Therapy"

1999 | GICOR study: "Androgen deprivation protocol associated with radiation therapy for localized high-risk prostate cancer"

1997-2001|Participant (collaborator) in the research project (FIS FELLOWSHIP): "Multimodal fusion of medical images in oncology" at HGU Gregorio Marañon. Project leader: Dr. Desco Menéndez.

Teaching :

2018-present|Professor of the International Master of Radiosurgery of the Central Nervous System at the Complutense University of Madrid.

2020-present|Professor at the School of Radiosurgery of the Spanish Society of Neurosurgeons.

2017-2019|Professor of the Master of Radiosurgery and Clinical Stereotactic Radiotherapy of the Spanish Society of Radiation Oncology.

2017 - 2022| Member of the Dissertation Committee in Radiosurgery three times at the Autonomous University of Madrid and the Complutense University of Madrid.

2011-2012|Professor, International Master's Program in Advanced Technological Applications in Radiation Oncology, 3rd ed.

2001-2002|Associate Professor of Dentistry at the Alfonso X El Sabio University.

1998 - 2001|Professor of the secondary school I.E. Technical and vocational school of health K.A.M. (Radiation oncology technicians and archival technicians).

Publications

2022|Stereotactic radiosurgery of obsessive-compulsive disorders. Chapter. 25. Book: Intracranial stereotactic radiosurgery. ed. 2022. Pages: 251-256.

2022|Active monitoring and stereotactic radiosurgery provide a low risk of symptoms associated with incident frontobasal meningioma, but stereotactic radiosurgery provides better radiological control – a subanalysis of the IMPASSE trial. Cancers 2022; 14(5).1300. https://doi.org/10.3390/cancers14164047

2022|Stereotactic radiosurgery for Kuss grade IV vestibular schwannoma: a multi-institutional study. Journal of Neurosurgery. 2022 Jun 3; DOI: 10.3171/2022.4.JNS22203.

2022|Stereotactic radiosurgery for Rathke's cleft cyst: an international multicenter study. J Neurosurg 137: 1041–1046, 2022. DOI: 10.3171/2021.12.JNS212108.

2021|Surgery and radiosurgery in autism: a retrospective study on 10 patients. Stereotactic Function Neurosurgery. 2021;99(6):474–483. 15.

Presentations

2019| "Other indications in malignant tumor pathology" Cranial Radiosurgery Conference. Valencia 2019.

2018| Gamma Knife Radiosurgery: Concept, Equipment and Treatment Description I Scientific Conference on Gamma Knife Radiosurgery, Madrid, 2018

2018|Radiotherapy and protons in children. XX meeting of the SENEC Working Group on Neuro-Oncology:. Madrid.

2015| "Visualization monitoring of response and complications of brain treatment". XVIII National Congress of S.E.O.R. Valencia

2015 | Gamma Knife Radiosurgery in the Treatment of Refractory Epilepsy Associated with Nodular Heterotopia: Long-Term Safety and Efficacy. Congress of the Spanish Society of Neurology.

Communities it belongs to:

-SER, Spanish Society of Radiosurgery (she currently serves on the Board of Directors as Treasurer)

-SEOR, Spanish Society of Oncological Radiotherapy: Working Groups "Brain Tumors (NEUROONCOR)" and "Radiation Oncology Activities in the Private Sector"

-SSRI, International Society for Stereotactic Radiosurgery

- Member of the Oncology Group of the Spanish Society of Neurosurgery (SENEC).

Dr. Nuria Martínez Moreno , working in tandem with Dr. Roberto Martínez Álvarez, combines expert oncology knowledge and high-precision radiosurgery technology , providing patients with the most advanced and effective treatment in Spain.

Dr. Karatas specializes in complex head and neck surgeries with international training from top institutions like Hannover Medical School and The Ohio State University.

• Trained in advanced endoscopic approaches to skull base surgery
• Specializes in thyroidectomy and complex thyroid cases
• Member of the American Academy of Otolaryngology Head and Neck Surgery
• Expert in cochlear implants and hearing-related surgeries

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. Klaus Novak introduced intraoperative motor evoked potential monitoring in Austria – a technique enhancing precision in neurosurgery. He works at Döbling Private Hospital.

• 25 years of experience of experience in neurosurgery and oncology
• Specializes in brain tumors and spine surgery
• Trained internationally, including research at Beth Israel Hospital
• Active in the interdisciplinary Movement Disorder Board at MedUni Vienna
• Fluent in multiple languages including English and German

Honor graduate from Hacettepe University specializing in oncology nutrition, with research on chronic disease management.

• Conducted studies on insulin resistance and obesity relationships
• Interned at Hacettepe University Oncology Hospital
• Completed specialized courses in bariatric nutrition
• Works with diverse cancer patients including pancreatic and liver cases
• Fluent in English for international consultations

Specializes in oncoplastic breast surgery – trained in Germany and member of multiple surgical associations.

• Over 29 years of experience of experience in general surgery with a focus on oncology
• Member of the Breast Surgery Association and Endocrine Surgery Association
• Trained in Europe Senology Academia in Düsseldorf and Berlin
• Performs oncoplastic breast surgery and colorectal procedures

Dr. Nivit Karla brings extensive training in cardiology and internal medicine to PrimeCare Bkk, with a focus on patient-centered oncology care.

• Trained at Siriraj Medical School, Mahidol University
• Specialized in cardiology intervention at Rajavithi Hospital
• Fluent in English and Thai for clear patient communication

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.

Professor Dr. Kurt Rasche is a German pulmonologist with more than 40 years of clinical experience. He is Chief of Pulmonology at Helios University Hospital Wuppertal. He leads the departments of pulmonology, sleep medicine, and ventilation therapy. He also heads the certified Lung Cancer Center.

He is certified in internal medicine, pulmonology, allergology, sleep medicine, and intensive care. His clinical work focuses on diagnosing and treating chronic lung diseases, lung cancer, and sleep-related breathing disorders. He works closely with specialists from other fields to provide coordinated care.

Dr. Rafał Marszałek is a general, oncologic, and bariatric surgeon. He specializes in minimally invasive and laparoscopic techniques. He leads the General Surgery Department at the Hospital in Legionowo, affiliated with the Military Medical Institute. He has many years of clinical experience from leading centers in Warsaw and the region.

As department head, he applies current treatment standards and advances modern surgical practice. The unit performs a high volume of procedures each year and provides full perioperative care. His key focus is bariatric surgery. He manages patient qualification, selects tailored laparoscopic methods, and provides postoperative monitoring. The goal is durable weight loss and reduced obesity‑related risk. His work also includes hernia repair, gallbladder surgery, thyroid and parathyroid surgery, breast surgery, and oncologic procedures.

Univ.-Prof. Dr. Heinz Gisslinger pioneered interferon therapy for myeloproliferative neoplasms and leads one of Europe's top research programs for these conditions.

• 41 years of experience specializing in MPNs like polycythemia vera and essential thrombocythemia
• Founder of Vienna's Laboratory for Myeloproliferative Neoplasms
• Program Director for MPN research with extensive clinical trial experience
• Treats all hematologic cancers including chronic myeloid leukemia and myeloma

Professor Raanan Berger, MD PhD, is a medical oncologist and radiotherapist. He is Director of the Cancer Center at Sheba Medical Center and heads its clinical research unit. He was listed in Forbes Israel’s “Best Doctors” (2025). He leads the genitourinary oncology program with a focus on prostate cancer. His care includes systemic therapy and radiotherapy in a multidisciplinary, patient-centered model.

He is board-certified in oncology. He earned his MD and PhD at Tel Aviv University and completed his clinical training at Sheba. He then completed a postdoctoral fellowship at Dana-Farber/Harvard, focusing on prostate cancer with Dr. Philip Kantoff and molecular oncology in Dr. William C. Hahn’s lab. He is a member of ESMO and ASCO. He has co-authored more than 20 peer-reviewed papers, including studies on outcomes in high- versus very high-risk prostate cancer and on BRCA1/2 in large cohorts.

Dr. Nir Kleinmann, MD, directs the Endourology and Kidney Stones Unit at Sheba Medical Center. He is an expert in minimally invasive urology and urologic oncology. His focus is the kidney and upper urinary tract. He was named among Israel’s Best Doctors for 2025–2026 by Forbes and ResultMed.

He is a pioneer of kidney‑sparing laser surgery. He uses a dual‑laser system with neodymium and holmium for complex tumors. His expertise includes UTUC, kidney and prostate cancer, kidney stones, and BPH.

His research includes the OLYMPUS trial on chemoablation for UTUC. He has more than 60 publications.

He is an Israeli board‑certified urologist. He is a Fellow of the American Endourology Society and a member of the Israeli Urological Association and the EAU. He completed fellowships in Endourology and Minimally Invasive Surgery at Thomas Jefferson University. He also completed a fellowship in Kidney Cancer Research at McMaster University.

Uzm. Dr. Erkan Göcen is a Radiation Oncology Specialist at Çerkezköy Private Optimed Hospital (Optimed Health Group). He graduated from İstanbul University, İstanbul Faculty of Medicine (Çapa) in 2003.

Career: He trained and practiced in Radiation Oncology from 2010 to 2012. He worked in public and private health institutions from 2012 to 2016. He served in the private medical sector as a Radiation Oncology Specialist from 2016 to 2023. He has been at Optimed Hospital since 2024.

Clinical interests: cancers of the brain, head and neck, esophagus, stomach, colorectal, pancreas, prostate, bladder, lung, soft tissues (sarcomas), skin, uterus and cervix, and breast. Affiliations: Turkish Society for Radiation Oncology (TROD) and Tekirdağ Medical Chamber. Languages: English and Turkish.

Heads the oncological surgery department at Rabin Medical Center – Dr. Nejman leads advanced clinical studies in oncourology.

• specializing in urological and breast cancers
• Leads numerous international clinical trials for new treatments
• Frequently invited speaker at major oncology forums
• Member of multiple international oncology societies

Dr. Rinat Erushalmi specializes in treating challenging breast cancer subtypes at Rabin Medical Center, Israel's leading oncology hospital.

• Expert in HER-2 Positive and Triple-Negative Breast Cancer
• Highly rated by patients in 6 conditions
• Specializes in hormone-related treatments and risk-reducing surgeries
• Practices at Rabin Medical Center – Israel's largest cancer center