National Cancer Institute (NCI)

Cancer Information Service

(800) 422-6237 - ext. (Cancer Information Service)
(877) 448-7848 - ext. (Smoking Quitline)

National Cancer Institutes (NCI) information specialists are available to help answer your cancer-related questions whether you are a patient, family member, friend, health care provider, or researcher. Services are available in English and Spanish.

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National Cancer Institutes (NCI) Information Service provides accurate, up-to-date, and reliable information that is easy to understand and free of charge. Trained information specialists provide personalized responses to a range of cancer questions, including:

  • Tailored clinical trials search
  • Cancer research
  • How to find cancer treatment centers
  • Cancer prevention and early detection
  • Risk factors
  • Symptoms
  • Diagnosis and treatment
  • Living with cancer

Monday through Friday 9:00 a.m. to 9:00 p.m. EST.


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