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.

Aetna

Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO PPO, POS, Transplant

Aetna Medicare Advantage (City of NY retirees only, starting 9/1/23)

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO

Blue Cross Blue Shield Federal Employee Program

Payor Type: Commercial
In Network Coverage Type(s): HMO, PPO

Blue Cross Blue Shield New York

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO, HMO

Blue Cross Blue Shield states outside of NY/NJ

Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO PPO, POS

Blue Cross Health Plus

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Carrum Health

Payor Type: Commercial
In Network Coverage Type(s): Supplemental

Cigna

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO

Connecticare

Payor Type: Commercial
In Network Coverage Type(s): POS, EPO, HMO

Emblem

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO, HMO

Emblem Essential

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Emblem Medicare Advantage

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO, HMO

Empire Blue Cross Medicare Advantage

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO, HMO, DSN

Empire Essential

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Empire Plan / NYSHIP (Blue Cross/UnitedHealthcare split plan)

Payor Type: Commercial
In Network Coverage Type(s): PPO

Fidelis

Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO

Fidelis Managed Medicaid & HARP

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Fidelis Medicare Advantage

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): HMO

First Health

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO

Healthfirst

Payor Type: Commercial
In Network Coverage Type(s): EPO, HMO, PPO, POS

Healthfirst Managed Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO

Healthfirst Medicare Advantage

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): HMO, PPO

Healthsmart

Payor Type: Commercial
In Network Coverage Type(s): PPO EPO

Horizon Blue Cross Blue Shield New Jersey (HMO)

Payor Type: Commercial
In Network Coverage Type(s): HMO

Horizon Blue Cross Blue Shield New Jersey (PPO)

Payor Type: Commercial
In Network Coverage Type(s): PPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier I (EPO)

Payor Type: Commercial
In Network Coverage Type(s): EPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier II (EPO)

Payor Type: Commercial
In Network Coverage Type(s): EPO

Horizon Medicare Advantage

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO, HMO

Husky CT Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government

Magnacare

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO

Straight NJ Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government

Straight NY Medicaid

Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government

Medicare Part A&B (traditional Medicare)

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): Federal Government

Multiplan/Beech Street/PHCS

Payor Type: Commercial
In Network Coverage Type(s): Supplemental

MVP

Payor Type: Commercial
In Network Coverage Type(s): PPO/OAP

Non-Participating Plans with Out of Network Benefits

Payor Type: Other
In Network Coverage Type(s): PPO, POS, EPO, HMO

NYC Medicare Advantage Plus for City Employees

Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): TBD

Oscar

Payor Type: Commercial
In Network Coverage Type(s): HMO/EPO

Oxford

Payor Type: Commercial
In Network Coverage Type(s): PPO, EPO

World Trade Center Health Program (WTC)

Payor Type: Commercial
In Network Coverage Type(s): State Government

Qualcare

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO

Tricare

Payor Type: Commercial
In Network Coverage Type(s): PPO, HMO

UMR

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS

United Healthcare

Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO

Contact and Location

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Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offer many services, including screening, chemotherapy, and medical testing.

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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.

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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: America's Top Doctors (2023)
  • Castle Connolly: New York Magazine Top Doctors (2002-2020)

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.

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See all External Beam Radiotherapy Service, Manhattan doctors

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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.

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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.

See all on PubMed

Disclosures

Doctors and faculty members often work with pharmaceutical, device, biotechnology, and life sciences companies, and other organizations outside of MSK, to find safe and effective cancer treatments, to improve patient care, and to educate the health care community.

MSK requires doctors and faculty members to report (“disclose”) the relationships and financial interests they have with external entities. As a commitment to transparency with our community, we make that information available to the public.

Michael J. Zelefsky discloses the following relationships and financial interests:

  • Alpha Tau
    Ownership / Equity Interests; Provision of Services
  • Boston Scientific
    Provision of Services
  • Jay Pharma Inc
    Ownership / Equity Interests; Provision of Services
  • Mustang Bio
    Fiduciary Role/Position; Ownership / Equity Interests

If you’re a patient at MSK and would like more information about your doctor’s external relationships, please talk with your doctor.

The information published here is for a specific annual disclosure period. There may be differences between information on this and other public sites as a result of different reporting periods and/or the various ways relationships and financial interests are categorized by organizations that publish such data.

This page and data include information for a specific MSK annual disclosure period (January 1, 2021 through disclosure submission in spring 2022). This data reflects interests that may or may not still exist. This data is updated annually.

Learn more about MSK’s COI policies here. For questions regarding MSK’s COI-related policies and procedures, email MSK’s Compliance Office at [email protected].


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