Memorial Sloan Kettering medical oncologist Eileen O'Reilly

Eileen M. O'Reilly, MD

Medical Oncologist


Associate Director for Clinical Research, David M. Rubenstein Center for Pancreatic Cancer Research; Winthrop Rockefeller Chair of Medical Oncology

Clinical Expertise

Pancreatic Cancer; Gallbladder Cancer; Bile Duct Cancer; Primary Liver Cancer; Gastrointestinal Neuroendocrine Cancers

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Accepted Insurance Providers

Dr. O'Reilly 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, Trinity College, Ireland


Internal Medicine - St. James's Hospital


Internal Medicine/Medical Oncology - St. Vincent's Hospital; Medical Oncology - Memorial Sloan Kettering Cancer Center; Medicine - Cornell University Medical Center

Board Certifications

Internal Medicine (Ireland); Medical Oncology

I am a medical oncologist whose research and clinical activities focus on treating pancreatic and hepatobiliary cancers. I work very closely with a team of surgeons, oncologists, and radiation therapists to determine and provide the best treatment for people with these diseases.

My research initiatives include integrating molecular and genetic-based therapies into the treatment of pancreas cancer, developing adjuvant and neoadjuvant therapies, and identifying biomarkers that may be used to select therapy. I am the principal investigator of multiple phase I, II, and III pancreatic cancer clinical trials and have authored and co-authored more than 250 articles, editorials, and book chapters.

In addition to caring for patients at MSK and conducting research, I am Chair of the Institutional Review and Privacy Board, the Continuing Medical Education Committee, and the Data and Safety Monitoring Committee. I also teach and mentor national and international oncology fellows, junior faculty, residents, and house staff and have received numerous teaching awards.

Outside of MSK, I collaborate with groups and experts around the world to improve outcomes for people with pancreatic cancer. Nationally, I am Co-Chair of the NCI Alliance Co-Operative Group Gastrointestinal Cancers Committee. I also serve on the medical and scientific advisory board of the Pancreatic Cancer Action Network, National Comprehensive Cancer Network Pancreas panel, ASCO Guidelines Committee, and the board of the National Pancreas Foundation. I received my medical degree from Trinity College at Dublin University in Ireland, where I was born.

Awards and Honors

  • Castle Connolly: New York Magazine Top Doctors (2005-2018)


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. O'Reilly’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.