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Walter Choi

  • ASSISTANT PROFESSOR Radiation Oncology
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  • Radiation Oncology


  • MD, SUNY Downstate Medical Center - College of Medicine

  • Residency, Radiation Oncology
    SUNY Downstate Medical Center

  • Fellowship, Brachytherapy
    * Beth Israel Medical Center *

  • Fellowship, Brachytherapy
    * Montefiore Medical Center - GME *


    Walter Choi, M.D. is the Director of Stereotactic Radiosurgery in the Department of Radiation Oncology at Continuum Cancer Centers of New York. He joined the department in 2007 after completing a fellowship in stereotactic radiosurgery and brachytherapy at Mount Sinai St. Luke's Roosevelt and Montefiore Medical Center. His areas of interest include stereotactic radiosurgery for intracranial tumors and functional stereotactic radiosurgery including trigeminal neuralgia; stereotactic ablative body radiotherapy for the treatment of oligometastatic disease; cancers of the lung and gastrointestinal system, and ocular melanoma. Dr. Choi is a member of the American Society for Radiation Oncology, the American College of Radiology the American Brachytherapy Society, the Radiologic Society of North America.

Industry Relationships

Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device and biotechnology companies to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their relationships with such companies.

Dr. Choi did not report having any of the following types of financial relationships with industry during 2015 and/or 2016: consulting, scientific advisory board, industry-sponsored lectures, service on Board of Directors, participation on industry-sponsored committees, equity ownership valued at greater than 5% of a publicly traded company or any value in a privately held company. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.

Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.

Insurance Information

Physicians who provide services at hospitals and facilities in the Mount Sinai Health System might not participate in the same health plans as those Mount Sinai hospitals and facilities (even if the physicians are employed or contracted by those hospitals or facilities).

Information regarding insurance participation and billing by this physician may be found on this page, and can also be obtained by contacting this provider directly. Because physicians insurance participation can change, the insurance information on this page may not always be up-to-date. Please contact this physician directly to obtain the most up-to-date insurance information.

Insurance and health plan networks that the various Mount Sinai Health System hospitals and facilities participate in can be found on the Mount Sinai Health System website.

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