Pictured: Neil Iyengar

Neil M. Iyengar, MD

Medical Oncologist

Clinical Expertise

Breast Cancer; Exercise Oncology

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Accepted Insurance Providers

Dr. Iyengar 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, University of Illinois at Chicago


Internal Medicine - University of Chicago Medical Center


Oncology/Hematology - Memorial Sloan Kettering Cancer Center

Board Certifications

Internal Medicine; Medical Oncology

I am a medical oncologist and clinical investigator with a practice dedicated exclusively to the care of patients with breast cancer. As a member of our multidisciplinary team of specialists, I treat patients with an individualized and multifaceted approach based on cutting-edge technology and the most up-to-date research. My practice is focused on providing patients with state-of-the-art care plans using advanced technologies and innovative strategies to treat breast cancer while also providing support for general well-being, such as nutrition and exercise. Ultimately, I am dedicated to providing clear communication and understandable information regarding standard therapies as well as new and exciting research options so that patients are empowered to make informed decisions about their care.

My research investigates the links between metabolic health and cancer. I work with a highly productive team composed of clinical and laboratory scientists at Memorial Sloan Kettering, Weill Cornell Medical College, and the Rockefeller University, where I hold a joint research position. Our team has established inflammation in the breast to be a key contributor to obesity-related breast cancers. As obesity rates are on the rise in the United States and worldwide, we are seeing an increase in obesity-related cancers. We have shown that inflammation in the fatty tissue of the breast and at other anatomic sites occurs in most obese and overweight individuals and even in some individuals who are normal weight. Therefore a key component of my research program is the development of clinical trials — including diets, exercise, and medications — that aim to prevent obesity-related cancers as well as improve outcomes in patients with fatty-tissue inflammation.

Awards and Honors

  • Career Development Award, Conquer Cancer the ASCO Foundation
  • Breast Cancer Research Foundation Investigator
  • The Society of MSK Research Grant
  • Young Investigator Award, Conquer Cancer the ASCO Foundation
  • Breast Cancer Achievement Award, Lynn Sage Breast Cancer Symposium
  • Young Investigator Award, Expedition Inspiration
  • Merit Award, Conquer Cancer the ASCO Foundation


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

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. Iyengar’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.