The TRICARE West Region includes the states of Alaska, Arizona, California, Colorado, Hawaii, Idaho, Iowa (except the Rock Island Arsenal area), Kansas, Minnesota, Missouri (except the St. Louis area), Montana, Nebraska, Nevada, New Mexico,
Phone Numbers can be updated by yourself by logging into your DS Logon account and going to "UPDATE CONTACT INFORMATION." This will take you to a screen to update your own phone number and email. Please ensure your phone (e.g., cell, landline)