Marcia Edelweiss

Marcia Edelweiss, MD


Clinical Expertise

Breast Pathology; Surgical Pathology; Cytopathology

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Dr. Edelweiss accepts the following list of insurance providers. Select your insurance provider to see more details.

Contact and Location

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

About Me


MD, Universidade Federal do Rio Grande do Sul Medical School (Porto Alegre, Brazil)


SUNY Downstate Medical Center


The University of Texas MD Anderson Cancer Center; Memorial Sloan Kettering Cancer Center

Board Certifications

Anatomic Pathology; Cytopathology

I am a board-certified pathologist and cytopathologist on the Surgical Pathology Diagnostic Service with a special interest in breast disease and general cytology.

As a breast pathologist, I analyze breast tissue biopsies and surgical specimens to identify signs and characteristics of disease, and make determinations about diagnoses that help guide treatment decisions for our patients.

As a cytologist, I analyze cells and fluid samples from various organs to help make diagnoses. I also perform biopsies in which I use a thin needle to remove cells or fluid from nodules that you can feel through the skin, a procedure called “fine needle aspiration.” This minimally invasive technique enables us to make an accurate diagnosis with relatively few cells and less risk for complications.

I look forward to continuing my scholarly contributions to the field of breast pathology and cytopathology in the coming years, and am honored to serve as medical director of Memorial Sloan Kettering’s School of Cytotechnology. Through this one-year training program we provide students with a range of skills, including the expertise to process and microscopically evaluate specimens using state-of-the-art technologies.

After fellowships at MD Anderson Cancer Center and Memorial Sloan Kettering, I joined the faculty of Memorial Sloan Kettering in 2010. I am a native of Brazil and am fluent in Portuguese and Spanish as well as English.


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.

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.

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Edelweiss’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.