Memorial Sloan Kettering radiation oncologist C. Jillian Tsai

C. Jillian Tsai, MD, PhD

Radiation Oncologist


Director of Head and Neck Radiation Oncology Research

Clinical Expertise

Head and Neck Cancer; Soft Tissue Sarcoma; Skin Cancer; Palliative Care; Metastatic Disease; Intensity Modulated Radiation Therapy; Image-Guided Radiation Therapy; Stereotactic Body Radiation Therapy; Stereotactic Radiosurgery

New Patient Appointments

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Accepted Insurance Providers

Dr. Tsai 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, Vanderbilt University; PhD, Stanford University


Radiation Oncology - MD Anderson Cancer Center

Board Certifications

Radiation Oncology

I am a board-certified radiation oncologist who specializes in treating head and neck cancer, soft tissue sarcoma, skin cancer, lung cancer, and metastatic cancers. I use advanced radiation therapy techniques to safely and effectively deliver treatments and to minimize side effects. I see patients at Memorial Hospital in Manhattan, and MSK Commack and MSK Nassau, on Long Island. I enjoy meeting members of the community and am honored to provide exceptional, personalized care for my patients.

I work closely with a multidisciplinary team of medical and surgical oncologists, pathologists, and radiologists to make individualized treatment plans. Treating cancer is a group effort, and the patient is the most important participant. When creating a care plan, I highly value the input of my patients. I believe it is critical to discuss expectations, possible side effects, and the support systems and to work through them together.

My main research goal is to advance cancer treatment through innovative cancer clinical trials and new radiation techniques. I am Director of Head and Neck Radiation Oncology Research. Our team of experts have several revolutionary trials that integrate advanced radiation therapy techniques with immunotherapy or other novel therapeutics to improve cancer care outcome as well as quality of life for our patients. In addition, I am also dedicated to developing novel radiation treatment approaches for patients with metastatic disease. 

I believe it is critical to discuss expectations, possible side effects, and the support systems and to work through them together.

Dr. Tsai

Awards and Honors

  • Special Training Award, The International Agency for Research on Cancer, World Health Organization, Lyon, France
  • Intramural Research Training Award, National Institute of Health
  • Trainee Excellence Award, the University of Texas MD Anderson Cancer Center
  • Philips Healthcare/RSNA Research Resident Grant
  • The Janice D. Singletary Fellowship for Lymphoma, The University of Texas M.D. Anderson Cancer Center
  • Eleanor Montague Distinguished Resident Award in Radiation Oncology, American Association for Women Radiologists


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. Tsai’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.