Memorial Sloan Kettering radiation oncologist Oren Cahlon

Oren Cahlon, MD

Radiation Oncologist


Associate Deputy Physician-in-Chief, Regional Care Network; Vice Chair, Department of Radiation Oncology

Clinical Expertise

Proton Therapy; Breast Cancer

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Accepted Insurance Providers

Dr. Cahlon 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, Mount Sinai School of Medicine


Radiation Oncology - Memorial Sloan Kettering Cancer Center

Board Certifications

Radiation Oncology

I am a board-certified radiation oncologist whose clinical practice is primarily focused on breast cancer. As part of a multi-disciplinary team of breast cancer experts, I work with my colleagues to identify the optimal treatment approach for each patient. At Memorial Sloan Kettering, we use the most modern radiation techniques, including prone treatment, deep inspiratory breath hold, partial breast irradiation, intensity modulated radiation therapy (IMRT), and proton therapy to deliver the most precise form of radiation. My colleagues and I on the breast service have great expertise in using all the most modern forms of radiation, and we the tailor the optimal technique to each individual patient.

I also specialize in the use of proton therapy to treat a variety of tumors that are difficult to treat with traditional forms of radiation, such as pediatric tumors, head and neck cancer, and lung cancer. Currently, this unique technology is available at only 12 centers in the United States. I, along with other radiation oncologists from Memorial Sloan Kettering, treat select patients with proton beam therapy at the ProCure Proton Therapy Center in Somerset, New Jersey.

Proton therapy is an advanced form of radiation therapy that delivers high doses of radiation to radio-resistant tumors to improve long-term disease control. In addition, proton therapy minimizes the amount of radiation delivered to healthy tissues that lie in close proximity to tumors, thereby reducing the risk of treatment-related side effects. Proton therapy has been used for decades in the treatment of prostate, pediatric, brain, eye, head and neck, and skull base tumors for decades. Today, proton therapy is actively being investigated for select patients with lung, esophageal, liver, and breast cancer, as well as sarcomas and lymphomas. We are participating in several of clinical trials to better characterize the potential benefits of proton therapy in a number of disease sites.  My research focuses on better characterizing the potential benefits of proton therapy as well as optimizing its delivery.


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. Cahlon’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.