OBJECTIVES: Consistent long-term adherence to antiretroviral therapy (ART) remains a challenge for many persons living with HIV (PLWH) despite advances in treatment. Clinical trials have shown that pharmacist-physician collaboration leads to cost-effective PLWH management. We are not aware of any studies that examine pharmacists’ perceptions of physicians with to adherence promotion activities (APA) for PLWH. Our objective was to examine how physician-pharmacist collaboration impacts APA in community-based settings. METHODS: We surveyed community-based pharmacists providing HIV patient care. We asked pharmacists to rate 27 APA activities and 4 dimensions of physician-pharmacist collaboration (phy-pharmindex): physician credibility; communication quality (open, positive interactions); relationship mutuality; and relationship vestedness (understands physician needs). We used factor analysis to generate an APA index (Cronbach alpha =0.92) and a phy-phamindex (Cronbach alpha = 0.95). Both univariate generalized linear modelling (GLM) and multivariate GLM were done to identify significant pharmacist- (e.g., age, education) and pharmacy- (e.g., type, prescription size) level factors associated with APA. RESULTS: