MSK breast surgeon Mary Gemignani

Mary L. Gemignani, MD, MPH, FACS

Breast Surgeon

My Role at MSK

Areas of Expertise

My Specialties

  • Breast Cancer

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About Me

What I Do at MSK
  • Director, Breast Surgical Fellowship Training Program
  • Co-Director, Young Women with Breast Cancer Program
Get To Know Me

I am a surgeon who specializes in the diagnosis and treatment of breast cancer. I also have expertise in caring for people with hereditary breast cancer, which is linked to family history and/or changes in BRCA genes that raise a person’s risk of getting the disease.

As co-Director of the Young Women with Breast Cancer Program at Memorial Sloan Kettering Cancer Center (MSK), I help lead a team that specifically focuses on treating young women with this disease. We also address fertility concerns and other unique quality-of-life issues they face.

Early on in medical school, I knew that I wanted to dedicate my career to women’s health and cancer care. 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 hope each of my patients feels 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.

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I work with a team of outstanding colleagues in medical oncology, radiation oncology, and plastic surgery to make a comprehensive treatment plan tailored to each individual’s needs and preferences.

I am experienced in the most advanced surgical techniques and perform about 300 procedures each year. 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.

I joined MSK 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 people with hereditary breast cancer. This includes doing risk-reducing double mastectomies for women with BRCA mutations or other familial risks.

My research focuses on patient-reported outcomes and ways to improve patient experiences and quality of life during cancer treatment and beyond. This involves studying symptoms and side effects after surgery directly from the patient’s perspective. We use this information to find ways to improve the surgical experience for our patients.

I am the Director of MSK’s Breast Surgical Fellowship Training Program, which prepares 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.

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

My Role at MSK

A breast surgeon is a doctor with special training in surgery on breasts.

Areas of Expertise

My Specialties

  • Breast Cancer
Education & Honors

Education

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

Residencies

  • Obstetrics and Gynecology - SUNY Health Science Center at Brooklyn

Fellowships

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

Board Certifications

  • Gynecologic Oncology
  • Fellowship certification Breast Surgery

Insurance Information

Understanding your insurance options is an important part of managing your cancer care. We have relationships with many common healthcare providers and plans.

Aetna

In Network Coverage Type
HMO, EPO PPO, POS, Transplant

Aetna Medicare Advantage (MTA retirees only)

In Network Coverage Type
PPO

Blue Cross Blue Shield Federal Employee Program

In Network Coverage Type
HMO, PPO

Blue Cross Blue Shield New York

In Network Coverage Type
PPO, POS, EPO, HMO

Blue Cross Blue Shield states outside of NY/NJ

In Network Coverage Type
HMO, EPO PPO, POS

Blue Cross Health Plus

In Network Coverage Type
HMO

Carrum Health

In Network Coverage Type
Supplemental

Cigna

In Network Coverage Type
PPO, POS, HMO

MSK has a tentative agreement with Cigna to continue coverage in 2024.

Connecticare

In Network Coverage Type
POS, EPO, HMO

Emblem

In Network Coverage Type
PPO, POS, EPO, HMO

Offers a qualified health plan from the Health Insurance Marketplace. Call Emblem to learn more.

Emblem Essential

In Network Coverage Type
HMO

Emblem Medicare Advantage

In Network Coverage Type
PPO, HMO

Empire Blue Cross Medicare Advantage

In Network Coverage Type
PPO, HMO, DSN

Empire Essential

In Network Coverage Type
HMO

Empire Plan / NYSHIP (Blue Cross/UnitedHealthcare split plan)

In Network Coverage Type
PPO

Fidelis

In Network Coverage Type
HMO, EPO

Offers a qualified health plan from the Health Insurance Marketplace. Call Fidelis to learn more.

Fidelis Managed Medicaid & HARP

In Network Coverage Type
HMO

Fidelis Medicare Advantage

In Network Coverage Type
HMO

First Health

In Network Coverage Type
PPO

Healthfirst

In Network Coverage Type
EPO, HMO, PPO, POS

Offers a qualified health plan from the Health Insurance Marketplace. Call Healthfirst to learn more.

Healthfirst Managed Medicaid

In Network Coverage Type
HMO

Healthfirst Medicare Advantage

In Network Coverage Type
HMO, PPO

Healthsmart

In Network Coverage Type
PPO EPO

Horizon Blue Cross Blue Shield New Jersey (HMO)

In Network Coverage Type
HMO

Horizon Blue Cross Blue Shield New Jersey (PPO)

In Network Coverage Type
PPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier I (EPO)

In Network Coverage Type
EPO

Horizon Blue Cross Blue Shield New Jersey Omnia Tier II (EPO)

In Network Coverage Type
EPO

Horizon Medicare Advantage

In Network Coverage Type
PPO, HMO

Husky CT Medicaid

In Network Coverage Type
State Government

Magnacare

In Network Coverage Type
PPO, POS, EPO

Straight NJ Medicaid

In Network Coverage Type
State Government

Straight NY Medicaid

In Network Coverage Type
State Government

Medicare Part A&B (traditional Medicare)

In Network Coverage Type
Federal Government

Multiplan/Beech Street/PHCS

In Network Coverage Type
Supplemental

MVP

In Network Coverage Type
PPO/OAP

Non-Participating Plans with Out of Network Benefits

In Network Coverage Type
PPO, POS, EPO, HMO

NYC Medicare Advantage Plus for City Employees

In Network Coverage Type
TBD

Oscar

In Network Coverage Type
HMO/EPO

Oxford

In Network Coverage Type
PPO, EPO

World Trade Center Health Program (WTC)

In Network Coverage Type
State Government

Qualcare

In Network Coverage Type
PPO, POS, HMO

Tricare

In Network Coverage Type
PPO, HMO

UMR

In Network Coverage Type
PPO, POS

United Healthcare

In Network Coverage Type
PPO, POS, HMO

Don't see your carrier or plan? We can help you understand your coverage.

If you don't have health insurance or are worried that your care may not be fully covered, our financial assistance programs may be able to help.

If you have questions about insurance, call us at 646-497-9176.

Make an Appointment

Current Patients

Request an appointment by logging on to MyMSK or calling your doctor’s office. If you aren’t registered for MyMSK, call 646-227-2593 for your Enrollment ID.

Contact and Location

Dr. Gemignani sees patients at one location.

Office Phone
Location
New York, NY
300 East 66th Street Floors 1 - 4 New York NY 10065

Looking to see a doctor at a different location? See all MSK locations.

Colleagues

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.

See all Breast Service doctors

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.

Search clinical trials

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.

See all on PubMed

Disclosures

Doctors and faculty members often work with pharmaceutical, device, biotechnology, and life sciences companies, and other organizations outside of MSK, to find safe and effective cancer treatments, to improve patient care, and to educate the health care community.

MSK requires doctors and faculty members to report (“disclose”) the relationships and financial interests they have with external entities. As a commitment to transparency with our community, we make that information available to the public.

Mary L. Gemignani discloses the following relationships and financial interests:

No disclosures meeting criteria for time period


If you’re a patient at MSK and would like more information about your doctor’s external relationships, please talk with your doctor.

The information published here is for a specific annual disclosure period. There may be differences between information on this and other public sites as a result of different reporting periods and/or the various ways relationships and financial interests are categorized by organizations that publish such data.


This page and data include information for a specific MSK annual disclosure period (January 1, 2022 through disclosure submission in spring 2023). This data reflects interests that may or may not still exist. This data is updated annually.

Learn more about MSK’s COI policies here. For questions regarding MSK’s COI-related policies and procedures, email MSK’s Compliance Office at [email protected].


View all disclosures