What is the american cancer society phone number? American Cancer Society customer service number is 800-227-2345, 24 hours, 7 days with an average waiting time 3 mins. Please see other phone numbers below. American Cancer Society Customer Service Number 800-227-2345.What is the corporate address for american cancer society? The official mailing/postal address, payment office and location address of American Cancer Society. People can use this contact information to contact them and get their cocern or query answered fast. American Cancer Society Headquarters Corporate Office Address: 250 Williams Street NW Atlanta, GA 30303 United States.What is the address of the american cancer society? American Cancer Society. (ACS) Address: 250 Williams St. NW. Atlanta. Georgia 30303-1002. United States. Telephone:What is national breast cancer awareness? Breast Cancer Awareness Month (BCAM), also referred to in the United States as National Breast Cancer Awareness Month (NBCAM), is an annual international health campaign organized by major breast cancer charities every October to increase awareness of the disease and to raise funds for research into its cause, prevention, diagnosis, treatment and cure.