Background: Multidisciplinary treatment programs benefit headache patients. No evidence exists as to whether they change resource use. A historical prospective cohort study was performed to compare the frequency of ambulatory care and emergency department visits for the purposes of headache by patients seen at the Calgary Headache Assessment and Management Program (CHAMP) in the three years before, and after, their first appointment. Methods: Administrative data from Alberta Health was used. All patients seen by a physician at CHAMP from 2003-2013 were included. Sample characteristics were described and the Wilcoxan signed rank sum test was used to compare the number of ambulatory care and emergency department visits in the three years before and after each patient’s first physician appointment at CHAMP. Follow-up visits at CHAMP were excluded from analyses. Results: The median number of ambulatory care visits over three years changed from 4 to 2 (p<0.001). The median number of emergency department visits was zero before and after assessment at CHAMP. The mean number of emergency department visits changed from 1.5 to 1.2 (p<0.0001). Conclusions: Enrollment in a multidisciplinary headache program reduces the number of ambulatory care visits and emergency department visits for purposes of headache.