Michael J. Zelefsky, MD -- Vice Chair for Clinical Research, Department of Radiation Oncology; Chief, Brachytherapy Service

Michael J. Zelefsky, MD

Radiation Oncologist

Titles

Vice Chair, Department of Radiation Oncology, Clinical Research; Chief, Brachytherapy Service; Steven A. Greenberg Chair in Prostate Cancer Research

Clinical Expertise

Prostate Cancer (Brachytherapy, Intensity-Modulated Radiation Therapy [IMRT], Image-Guided Radiation Therapy [IGRT])

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Accepted Insurance Providers

Dr. Zelefsky accepts the following list of insurance providers. Select your insurance provider to see more details.

Contact and Location

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About Me

Education

MD, Albert Einstein College of Medicine

Residencies

Radiation Oncology - Memorial Sloan Kettering Cancer Center

Board Certifications

Radiation Oncology

I am a board-certified radiation oncologist and co-leader of Memorial Sloan Kettering’s Genitourinary Disease Management Team — a multidisciplinary group of physicians who work together to treat patients with urologic malignancies.

As a recognized expert in the field of radiation therapy, I am Chief of Memorial Sloan Kettering’s Brachytherapy Service. Brachytherapy, which we use to treat many types of cancer, is the delivery of radiation using seeds implanted directly in a tumor.

Our prostate brachytherapy program, which I have helped develop and enhance since joining the staff in 1990, is known for its depth of experience and cutting-edge approach in treating men with prostate cancer. For patients with advanced or aggressive prostate cancer, I have significant expertise using high-dose-rate brachytherapy and temporary brachytherapy, in which patients receive several high-dose treatments either as a boost or as the sole treatment. I also have experience using brachytherapy in patients whose tumor has recurred after external-beam radiation therapy or seed implant, as well as expertise using image-guided stereotactic radiosurgery for areas of metastases (spread) such as bone or lymph nodes.

In addition, I was instrumental in pioneering the use of IMRT (intensity-modulated radiation therapy, which is computer-guided delivery of high doses of radiation directly to the tumor) and IGRT (image-guided radiotherapy, radiation beams targeted precisely to the tumor) for treating men with prostate cancer.

(Learn more about radiation therapy for prostate cancer.)

I am Editor-in-Chief of Brachytherapy, a medical journal that addresses all aspects of this sub-specialty, and Chairman of the National Patterns of Care Study for Genitourinary Cancers. I am a past president of the American Brachytherapy Society.

For my work in this field, I have been honored to receive several awards including the Boyer Award for Excellence in Clinical research, the Outstanding Teaching Award in the Department of Radiation Oncology at Memorial Sloan Kettering, the 2009 Henschke Medal (the highest award of the American Brachytherapy Society for achievements in Brachytherapy), and the 2009 Emanuel Van Descheuren Award for Excellence in Translational Research.

I lecture nationally and internationally about radiation treatments for prostate cancer.

Our prostate brachytherapy program, which I have helped develop and enhance since joining the staff in 1990, is known for its depth of experience and cutting-edge approach in treating men with prostate cancer.

Dr. Zelefsky

Awards and Honors

  • Castle Connolly: New York Magazine Top Doctors (2002-2018)

Colleagues

Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

Clinical Trials

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Find a Clinical Trial for You

Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Zelefsky’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.