Summary

I am a radiation oncologist with a special expertise in the treatment of prostate cancer using brachytherapy (radiation delivered by seeds implanted directly in the tumor) and intensity-modulated radiation therapy (IMRT -- a form of 3-D conformal radiation therapy). Memorial Sloan-Kettering Cancer Center has one of the largest clinical experiences with IMRT for prostate cancer, and we have demonstrated excellent outcomes as well as reduced side effects with this approach. We have also developed new 3-D conformal computer-optimized intraoperative planning techniques for prostate brachytherapy that has significantly improved the accuracy of seed implant therapy and further reduced treatment side effects in patients treated over the past five years at Memorial Sloan-Kettering. For seed implants, we have recently integrated magnetic resonance imaging and spectroscopy into our intraoperative computer-planning systems to pinpoint the delivery of concentrated radiation doses to documented abnormal regions within the prostate gland. Currently, I am the 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.
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Quick Facts

  • 4.3
  • 40 years of experience
  • speaks English
  • Memorial Sloan Kettering Cancer Center
  • 8 written reviews
  • 1 specialty
  • 9 areas of expertise
  • 1 board certification
  • 3 hospital affiliations
  • 5 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Michael J Zelefsky has 5 locations

Nyu Langone Perlmutter Cancer Center

160 E 34th StNew York, NY 10016
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
Sun9:00 am - 12:00 pm

Memorial Sloan Kettering Cancer Center

1275 York Ave Fl 2New York, NY 10065

Nyu Tisch Hospital

550 1st AveNew York, NY 10016

Nyu Langone Hospital Kimmel Pavilion

424 E 34th StNew York, NY 10016

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Dr. Michael J Zelefsky, MDDaniel Gomez, MDGustav Cederquist, MD, PhDDr. Simon K. Cheng, MD, PhD
Radiation OncologyRadiation OncologyRadiation OncologyRadiation Oncology
Accepts New Patients Accepts New Patients
4.3 
3.7 
40 Years of Experience 10 Years of Experience 6 Years of Experience 21 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English Speaks English, Spanish
New York , NYNew York , NYUniondale , NYNew York , NY
Med School: Albert Einstein Med Col Med School: University of California San Francisco (2004) MBA Rice University Med School: Weill Cornell Medical College Med School: New York University School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Michael J Zelefsky

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Michael J Zelefsky has the following specialty

Specialty Expertise

Dr. Michael J Zelefsky has the following 9 areas of expertise

  • Brachytherapy
  • Cancer
  • Head and Neck Cancer
  • Hodgkin's Lymphoma
  • Intensity-Modulated Radiotherapy
  • Prostate Cancer (Prostatic Neoplasm)
  • Radiation Therapy
  • Skin Cancer
  • Urogenital Cancer (Genitourinary)

Certifications, License, & Education

40 Years Experience

Dr. Michael J Zelefsky holds an expired medical license in the state of New York.

Medical License

Medical Doctor with an expired medical license in the state of New York that expired in 2026.

Education & Training

Residency

Completed their residency at Memorial Sloan Kettering Cancer Center.

Medical School

Graduated from Albert Einstein Med Col and Albert Einstein College Of Medicine Of Yeshiva University in 1986.

NPI Number

Dr. Zelefsky's NPI number is 1093785065.

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Frequently Asked Questions

Is Dr. Michael Zelefsky accepting new patients?
Dr. Michael Zelefsky has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Michael Zelefsky speak?
Dr. Michael Zelefsky speaks English.
Does Dr. Michael Zelefsky accept my insurance?
You can see the insurance plans that Dr. Michael Zelefsky accepts on their Vitals profile.
How can I make an appointment with Dr. Michael Zelefsky?
You can find contact information for Dr. Michael Zelefsky here on Vitals.
Which hospitals is Dr. Michael Zelefsky affiliated with?
Dr. Michael Zelefsky is affiliated with Memorial Sloan Kettering Cancer Center, Nyu Tisch Hospital, and Nyu Langone Hospital Kimmel Pavilion.

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