MSK breast radiologist Sandra Brennan

Sandra B. Brennan, MBBCh, BAO; FRCR



Director of Radiology, MSK Westchester

Clinical Expertise

Breast Imaging (MRI, Digital Mammography, Tomosynthesis, Ultrasound, Image-Guided Breast Biopsies); Body Imaging (CT, Ultrasound)

New Patient Appointments

Scheduling a visit is easy. Click below or call us to get started.

Accepted Insurance Providers

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

Contact and Location

Locations map

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


MBBCh, BAO; BMedSc; MSC; University College Dublin (Ireland)


Mater Misericordiae Hospital (Dublin, Ireland)


Memorial Sloan Kettering Cancer Center

Board Certifications

Radiology (US, UK, and Ireland); Medicine (Ireland)

I am a board-certified radiologist. I completed fellowship training in breast and body imaging at Memorial Sloan Kettering and I have been committed to providing excellent care to my patients, contributing to research advancements, and teaching since joining MSK in 2006.

I have served as Director of Radiology at MSK Westchester since it opened. I am proud to work alongside my many distinguished colleagues in the Breast Service in the Department of Surgery, the Breast Cancer Medicine Service, the Department of Radiation Oncology, and other disciplines. We provide high-quality care that is timely and compassionate. At MSK Westchester, we are committed to extending world-class cancer care to our neighbors in Westchester. I am also delighted to be a part of the care team at the Evelyn H. Lauder Breast Center in Manhattan.

I work primarily with breast imaging but also do body imaging. I interpret screening and diagnostic mammograms, breast ultrasound examinations, and breast MRIs. I am an expert in performing minimally invasive breast biopsies using image guidance. I also perform breast localizations with both radioactive seeds and wires. For women having surgery, I do sentinel node injections.

I have gained local, national, and international recognition as a researcher and educator in breast imaging. I have presented my research on the radiologic-pathologic correlation and high-risk screening at national and international meetings.


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. Brennan’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.