National Cancer Institute / NCI


Email/Chat Service
Online form for email submissions
Live chat service -- for help with information about cancer or quitting smoking

(800) 422-6237 -- NCI Contact Center (800-4-CANCER)
(800) 332–8615 -- TTY
(877) 448-7848 -- Smoking Quitline (877-44U-QUIT)

Phone and Chat: Monday-Friday 9 a.m.-9 p.m. ET

Mailing Address
National Cancer Institute
BG 9609 MSC 9760
9609 Medical Center Drive
Bethesda, MD 20892-9760

The NCI Contact Center is a program of the National Cancer Institute. Callers can speak with knowledgeable and caring Information Specialists who provide accurate, confidential and free information about cancer to patients and families, the public and health professionals. Callers can receive brochures and other cancer information free of charge.

You can contact an information specialist through Instant Messaging. You can access the instant messaging on NCI’s Web site at on the Internet (click on the "Live Chat" link). You can also access the Live Chat service at The chat service is available Monday through Friday from 9 a.m. until 9 p.m. CT. Online chat is only available in English.