Questions About Cancer? 1-800-4-CANCER

NCI's Cancer Information Service (CIS)

How can I reach the CIS?


Cancer.gov LiveHelp iconTelephone
1-800-4-CANCER (1-800-422-6237)
Available in English and Spanish
Monday through Friday
8:00 a.m. to 8:00 p.m. ET
Cancer.gov LiveHelp iconLiveHelp Online Chat
LiveHelp
Available in English only
Monday through Friday
8:00 a.m. to 11:00 p.m. ET
E-mail
E-mail Us
Available in English and Spanish
Mail
BG 9609 MSC 9760
9609 Medical Center Drive
Bethesda, MD 20892-9760

The NCI's CIS also operates the NCI's Smoking Quitline (1-877-44U-QUIT), which provides free cessation information and support to smokers who wish to quit. There is no charge or fee for our service. Service is provided in English and Spanish, Monday through Friday from 8:00 a.m. to 8:00 p.m. Eastern Time. Listen to recorded messages on the risks of smoking, the benefits of quitting, and tips for quitting 24 hours a day/7 days a week.