National Cancer Institute
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For questions about cancer, contact NCI's Cancer Information Service

NCI's Cancer Information Service can answer a wide range of cancer related questions, help find a clinical trial, help with quitting smoking, and provide free publications. Our service is free and confidential and is offered in English and Spanish.

1-800-4-CANCER (1-800-422-6237)
Monday through Friday 8:00 a.m. to 8:00 pm ET


NCI Public Inquiries Office
6116 Executive Boulevard
Suite 300
Bethesda, MD 20892-8322

For help with quitting smoking, contact NCI's Smoking Quitline
NCI's Smoking Quitline offers individualized cessation counseling, free quit materials, helps you develop a quit plan and provides strategies to prevent relapse. Our service is free and confidential.

1-877-44U-QUIT  (1-877-448-7848)
Monday through Friday 8:00 am to 8:00 pm ET

Important: NCI provides cancer related information for your general knowledge and is not a substitute for a doctor's advice.

NCI Divisions, Offices and Centers

We can answer your cancer questions
We can answer your cancer questions