Contact Us for Help



Mon - Fri
9 a.m. to 9 p.m. ET

LiveHelp Online Chat

Mon - Fri
9 a.m. to 9 p.m. ET


E-mail Us

Information specialists at the Cancer Information Service (CIS), NCI's contact center, are available to help answer your cancer-related questions in English and Spanish whether you are a patient, family member or friend, health care provider, or researcher. We also respond to questions and requests for information 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.

Learn more about how the CIS can help you.

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

Questions about cancer or clinical trials? There's help available from NCI information specialists.

You can also reach us by mail:

Mailing Address

BG 9609 MSC 9760
9609 Medical Center Drive
Bethesda, MD 20892-9760

Other Ways to Find Information

NIH Staff Directory
Find contact information for NCI staff as well as staff from other NIH Institutes and Centers

NCI Divisions, Offices and Centers
Links to NCI's six divisions, the Center for Cancer Research, and offices and centers within the NCI Office of the Director

Media Inquiries
Contact information for the NCI Press Office

Información en español
Contact information in Spanish

  • Updated: January 16, 2019