KAREN M. KOSTROFF, M.D.  is one of New York’s most renown breast cancer surgeons.  Dr. Kostroff is presently Chief of Breast Surgery for the North Shore-Long Island Jewish Health System and operates at both Long Island Jewish Medical Center and North Shore University Hospital. Educated in the six year medical honors program at Boston University, she then completed her surgical training at New York Hospital-Cornell Medical Center which included a concentration on cancer surgery and breast disorders at Memorial Sloan-Kettering Cancer Institute followed by additional training in cancer surgery at Brigham and Women’s Hospital of Harvard Medical School.

Dr. Kostroff is one of the nation’s leading breast cancer specialists in the diagnosis and treatment of women at risk for genetic based breast cancer. She has provided consultations for hundreds of women at risk for hereditary breast cancer and/or who are positive for the BRCA1/2 gene. read more

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featured press
NY Magazine

New York Magazine - Best Doctors

Dr. Kostroff listed in New York Magazine, 'The Best Doctors in New York."          
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Front Page Newsday - Breast Cancer on Long Island

Dr. Kostroff featured in two part series “Lumpectomy vs. Mastectomy” and “One Women’s Decision.”         
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Power List

Most Powerful Woman on Long Island - Long Island Press

Dr. Kostroff voted the most influential woman on Long Island and 9th most influential overall.
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No Ordinary Walk in the Park

No Ordinary Walk in the Park

Dr. Kostroff participated in the Long Island 2 day 35 mile walk in support of breast cancer awareness and funding.
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The New Standard

The New Standard - Changing Tomorrow Today

Dr. Kostroff was one of the more than 40, 000 participants at the Making Strides Against Breast Cancer Walk in Jones Beach NY. Over $2.3 million was raised to help find a cure for breast cancer.
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Dr. Kostroff on Fox News at 10.

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Dr. Kostroff discusses Breast Cancer Awareness.