Contact Us

Existing CMS Customers - Click here for a comprehensive list of phone numbers and addresses to assist you in managing your account.

Customer Service

(800) 561-4567
Monday through Friday 5:00 a.m. to 6:00 p.m. Pacific Time

Media Relations

(949) 517-7200


For all other inquiries please contact:

(949) 517-7000
Monday through Friday 8:30 a.m. to 5:00 p.m. Pacific Time