Call 1-800-4-CANCER(1-800-422-6237)
Mon – Fri
9 a.m. to 9 p.m. ET

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Mon – Fri
9 a.m. to 9 p.m. ET

The Cancer Information Service (CIS)

Information specialists at NCI’s Cancer Information Service (CIS), NCI’s contact center, are available to help answer your cancer-related questions whether you are a patient, family member or friend, health care provider, or researcher. Our service is available in English and Spanish.

We provide accurate, up-to-date, and reliable information that is easy to understand and free of charge. Our trained information specialists provide personalized responses to a range of cancer questions, including:

  • tailored clinical trials searches
  • cancer research
  • how to find cancer treatment centers
  • cancer prevention and early detection
  • risk factors
  • symptoms
  • diagnosis and treatment
  • living with cancer
  • tissue donation
  • questions about NCI and its programs

CIS can also help you quit smoking. The Smoking Quitline number is 1-877-44U-QUIT (1-877-448-7848). The service is available in English and Spanish, Monday through Friday, 9 a.m. to 9 p.m. ET.