Memorial Sloan Kettering breast cancer surgeon Mahmoud El-Tamer

Mahmoud B. El-Tamer, MD


Clinical Expertise

Oncoplastic Breast Surgery

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Dr. El-Tamer 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, American University of Beirut


General Surgery - American University of Beirut Medical Center; Surgery - SUNY Health Sciences Center at Brooklyn


Surgical Oncology and Reconstruction - Memorial Sloan Kettering Cancer Center

Board Certifications


I am a breast surgeon with more than 25 years of experience in caring for people with breast cancer. I have particular expertise in performing oncoplastic procedures. I combine my oncologic and plastic surgery training to offer the most-effective procedures for my patients, while also maintaining and even enhancing their physical appearance. I care for more than 350 people with breast cancer each year.

My research interests include different aspects of breast cancer and the quality of surgical care. I am currently working with several other cancer centers around the country to explore the possibility of no longer using radiation therapy for people with low-risk breast cancer who have had breast preservation surgery. If we can treat them without the possible side effects of radiation, they can achieve a better quality of life after breast cancer surgery. I am also looking at using smaller, less-invasive procedures for people whose breast cancer responds very well to chemotherapy. I have been the principal or co-principal investigator on grants from the Avon Foundation for Women, the US Department of Veterans Affairs, and the American College of Surgeons.

I have written or co-authored more than 90 book chapters, manuscripts, and editorials on breast cancer. I have also published a textbook to help other breast surgeons improve the cosmetic outcome of breast cancer surgeries. I am a reviewer for and sit on the editorial boards of several leading medical journals.

I am an active member of many leading professional societies, including the American College of Surgeons, the Society of Surgical Oncology, the American Society of Breast Surgeons, and the American Society of Clinical Oncology.

When people with cancer first come to see me, they often have many concerns about the outcome, their options, and the final result of their procedure: Will I survive? What shall I do? How will I look? Will I be able to get back to my normal daily life? My personal approach is to explain each surgery in detail and serve as a guide in helping them choose the option that is best for them. At the end of each appointment, my goal is that the people I care for feel reassured that they will receive the best care possible.


Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. I work closely with nurse practitioner Liza L. Lagdamen. We combine our expertise to provide comprehensive care to our patients at every step of their cancer journey.

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

Principles and Techniques in Oncoplastic Breast Cancer Surgery. El-Tamer M, ed.   Singapore: World Scientific Press; 2013.

Book Chapters
“The potential of the electronic health record in the breast center.” Hughes KS, El-Tamer M, Hughes S, Drohan B, Sharko J, Lawrence C, Loberg A, Grinstein G. In: Breast Surgical Techniques and Interdisciplinary Management. Dirbas FM, Scott-Conner C, eds. New York: Springer; 2011.

“Breast cancer in men.” El-Tamer MB, Pocock B. In: Breast Surgical Oncology. Kuerer H, ed.  New York: McGraw Hill; 2010:237-241.

“Patterns of recurrences in breast cancer.” Winchester DP, Winchester DJ, El-Tamer MB. In: The Breast: Comprehensive Management of Benign and Malignant Disorders. 4th ed. Bland KI, Copeland EM, eds. St Louis: Saunders; 2009: 417-26.

“Patterns of recurrences in breast cancer.” Winchester DP, Winchester DJ, El-Tamer MB. In: The Breast: Comprehensive Management of Benign and Malignant Disorders. 3rd ed. Bland KI, Copeland EM, eds. St Louis: Saunders; 2003: 413-21.

“Male breast cancer.” El-Tamer MB, Kim L. In: Breast Cancer: A Guide to Detection and Multidisciplinary Therapy. Torosian MH, ed. Totowa, NJ: Humana; 2002: 183-192.

“Appendiceal tumors.” El-Tamer MB, Bradley T, Schulsinger A. In: Integrated Cancer Management: Surgery, Medical Oncology and Radiation Therapy. Torosian MH, ed. New York: Dekker; 1999:133-145.

“Wound management in spinal surgery.” El-Tamer MB, Chaglassian T. Tumors of the Spine: Diagnosis and Clinical Management. Sundaresan N, Schmidek HH, Schiller AL,  Rosenthal DI, eds. Philadelphia: Saunders; 1990.


Publications on PubMed

Visit PubMed for a full listing of Dr. El-Tamer’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.