CHAMPVA Benefits Civilian Health and Medical Program The CHAMPVA customer service number is 800 733-8387, 8:05 a.m. to 7:30 p.m. EST Monday through Friday. This number can be difficult to get through on, so keep redialing. The Civilian Health and Medical Program of the Department of Veterans Affairs (CHAMPVA) is a comprehensive health care program in … Continue reading CHAMPVA — Civilian Health and Medical Program