Pictured: Geoffrey Ku

Geoffrey Y. Ku, MD

Medical Oncologist

Clinical Expertise

Gastrointestinal Malignancies; New Chemotherapies; Esophageal and Gastric Cancers

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Accepted Insurance Providers

Dr. Ku 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 Pennsylvania School of Medicine


NewYork-Presbyterian Hospital/Weill Cornell Medical Center


Memorial Sloan Kettering Cancer Center

Board Certifications

Internal Medicine; Medical Oncology

I am a medical oncologist who cares for people with cancer in the gastrointestinal tract, including esophageal, stomach, colorectal, and pancreatic cancers.  I graduated from the University of Pennsylvania School of Medicine. I completed an internal medicine residency at NewYork-Presbyterian Hospital at Weill Cornell, followed by a medical oncology fellowship at Memorial Sloan Kettering . I also spent an additional year at the Ludwig Center for Cancer Immunotherapy at MSK. My research in that time focused on translational correlative assays  for the then new field of immunotherapy.

Now, my research focuses on developing new treatments for people with esophageal and gastric cancers. I am particularly interested in exploring the combination of chemotherapy and radiation to treat esophageal cancer. I am also investigating immunotherapy and targeted therapies both to cure and to minimize the symptoms of cancer.  I am currently Head of the Esophagogastric Section in the Gastrointestinal Oncology Service.

I was a member of the Gastrointestinal Non-Colorectal Cancer Track for the Scientific Program Committee of the  American Society of Clinical Oncology. I was privileged to serve as the Track Leader for 2015–2016. I am currently a member of the National Cancer Institute’s Esophagogastric Task Force and NRG Oncology’s Gastrointestinal Non-Colorectal Cancer Core Committee.


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. Ku’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.