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Jonathan P.S. Knisely, MD

Chief and Co-Director for Radiosurgery and
Stereotactic Radiation Therapy, Radiation Medicine
North Shore University Hospital
Associate Professor, Radiation Medicine

Office Location
North Shore University Hospital
Department of Radiation Medicine
300 Community Drive
Manhasset, NY 11030
Phone: (516) 470-7190
Fax: (516) 470-8445

Special Interests

  • Radiosurgery and Radiotherapy of Benign and Malignant Brain Tumors
  • Spine Radiosurgery
  • Skull Base Tumors
  • Arteriovenous Malformations
  • Pituitary Adenomas
  • Avoidance of Radiation-Induced Morbidity

Medical Education

  • University of Pennsylvania, Philadelphia, PA, 1986


  • Categorical Internal Medicine, Michael Reese Hospital and Medical Center, Chicago, IL, 1986-1989
  • Radiation Oncology, University of Toronto-Princess Margaret Hospital and Toronto Sunnybrook Regional Cancer Centre, Toronto, ON, 1989-1992

Prior Employment

  • Yale University School of Medicine & Yale Cancer Center, New Haven, CT, 1992-2011

Board Certifications

  • Internal Medicine, 1990
  • Radiation Oncology, 1993


  • Diplomate, American Board of Radiology (Radiation Oncology)
  • Diplomate, American Board of Internal Medicine; American Society for Radiology and Oncology
  • Canadian Association of Radiation Oncology
  • Society for Neuro-oncology
  • European Society for Therapeutic Radiology and Oncology
  • International Stereotactic Radiosurgery Society
  • Leksell Gamma Knife Society

Primary Hospital Affiliations

  • North Shore University Hospital
  • Long Island Jewish Medical Center
  • Southside Hospital
  • Glen Cove Hospital

Joined North Shore-LIJ Health System: 2011

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Clinical Neuroscience News, April 2014

Clinical Neuroscience News, 2014

Click on the image above to read about innovations in brain tumor management in our latest newsletter.