MSK radiation oncologist John Cuaron

John J. Cuaron, MD

Radiation Oncologist


Chief for External Beam Radiotherapy, Long Island

Clinical Expertise

Breast Cancer; Gastrointestinal Cancer; Brain Cancer; Lung Cancer; Image-Guided Radiation Therapy (IGRT); Intensity-Modulated Radiation Therapy (IMRT); Stereotactic Radiosurgery (SRS)

New Patient Appointments

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Accepted Insurance Providers

Dr. Cuaron 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


MD, Boston University School of Medicine


Radiation Oncology - Memorial Sloan Kettering Cancer Center

Board Certifications

Radiation Oncology

I am a radiation oncologist who cares for people with gastrointestinal, lung, breast, and brain tumors. I see patients at both Memorial Sloan Kettering Commack on Long Island and Memorial Hospital in Manhattan. I love being able to provide the same level of care, expertise, technology, and support at each location.

Treating cancer is a team effort — I never work in a vacuum. I partner with my colleagues in medical and surgical oncology, radiology, and pathology to make a diagnosis and develop a personalized treatment plan for each patient.

Most patients are curious about who is on their care team, how we work together, and what our treatment strategy will be. During initial consultations and subsequent visits, I work to make sure that my patients are well informed of all these aspects of their care. It is very empowering for people to see the blueprint and be a part of the team.

Patients also want to know about radiation therapy — what it is, how it works, and what it will feel like. The radiation we use to treat cancer is very different and much safer than what people may have seen or heard about in popular culture. A large part of my initial consultation with patients outlines the specifics of radiation therapy and allows them to become familiar with treatment and side effects so they know what to expect before treatment starts.

In addition to my clinical practice, I am involved in a number of cancer clinical trials at MSK Commack and MSK in Manhattan. One example is a study of patients needing treatment for lung tumors. Since tumors in the lungs tend to move as people breathe, we are using miniature GPS beacons that can be implanted next to the tumors so that we know the radiation beams are accounting for the movement. This technology will allow for more precise treatment and potentially fewer side effects because less of the healthy lung tissue is impacted. I am also interested in studying the clinical and biological aspects of proton therapy, an advanced form of radiation therapy that allows for the most amount of normal tissue to be spared.

Like many families, mine has been impacted by cancer. My personal experiences lead me to understand that doctor-patient relationships are critical to providing great care for people. To that end, I hope my patients feel informed, invested, and confident about their care. I also hope they feel they have a guide they can turn to during a time that can be confusing, frustrating, and frightening.

Treating cancer is a team effort — I never work in a vacuum. I partner with my colleagues in medical and surgical oncology, radiology, and pathology to make a diagnosis and develop a personalized treatment plan for each patient.

Dr. Cuaron


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. Cuaron’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.