MSK breast surgeon Mary Gemignani

Mary L. Gemignani, MD, MPH, FACS



Director, Breast Surgical Fellowship Training Program

Clinical Expertise

Breast Cancer

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Accepted Insurance Providers

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

Contact and Location

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Find a Convenient Location

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, Mount Sinai School of Medicine; MPH, Mailman School of Public Health, Columbia University


Obstetrics and Gynecology - SUNY Health Science Center at Brooklyn


Gynecologic Oncology - Memorial Sloan Kettering Cancer Center; Breast Surgery - Memorial Sloan Kettering Cancer Center

Board Certifications

Gynecologic Oncology; Fellowship certification Breast Surgery

I am a surgeon who specializes in the diagnosis and treatment of breast cancer. I joined Memorial Sloan Kettering in 1996 and completed fellowships in both breast surgery and gynecologic oncology. I have been practicing at MSK ever since. My dual training, research interests, and experience make me uniquely suited to provide expert care for women with hereditary breast cancer. This includes doing risk-reducing double mastectomies for women with BRCA mutations or other familial risks.

I perform about 300 procedures each year and see patients at MSK’s Breast and Imaging Center in Manhattan. My goal is not only to provide advanced surgical techniques, but also to bring together a team of superb colleagues in medical oncology, radiation oncology, and plastic surgery. We then make a comprehensive treatment plan tailored to each individual patient.

From early on in medical school, I knew that I wanted to dedicate my career to women’s health and oncology. I provide care that takes into account quality of life concerns for women with breast cancer, including cosmetic outcomes. When appropriate, I offer cosmetic options such as nipple sparing mastectomy and aim to minimize the side effects of breast cancer surgery. It’s my goal to help my patients get back to their lives as quickly as possible after surgery.

My current research interest is in patient-reported outcomes, which involves studying symptoms and side effects after surgery directly from the patient’s perspective. This information is vital for finding ways to improve the surgical experience for our patients. I am also studying how best to address the fertility concerns of young women who have been diagnosed with breast cancer.

I am the Director of MSK’s Breast Surgical Fellowship Training Program and responsible for the educational training program for a highly selected group of surgeons choosing to specialize in breast surgery. I am an active member of local, national, and international societies. These include the American College of Surgeons, the Society of Surgical Oncology, the American Society of Breast Surgeons, and the American Society of Clinical Oncology.

As a surgeon, I aim to provide hope and support as women with cancer navigate one of the most difficult times in their lives. At the end of a consultation, I want each of my patients to feel that they have the information they need to make decisions about their treatment. I want them to have less fear about their diagnosis and to know that I will be with them to help and guide them through their journey.

Outside of work, I am an avid runner, and I enjoy spending time with my family.


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

Smiling doctors in the lab

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. Gemignani’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.