OBJECTIVES: To assess the relationship between integration of services and the management of hypertensive patients within select physician organizations in the U.S.  METHODS: A modified version of the Physician Practice Connection Readiness Survey (PPC-RS), developed by the National Committee for Quality Assurance (NCQA), was administered to chief medical officers at 28 U.S.-based physician organizations in 2010. The integration score included structural, functional, and financial sub-domains with possible scores of 0 to 100; a higher score indicating greater integration of services. Demographic and clinical data were collected from a random sample of 300 hypertensive adults selected for chart review at each participating organization. Site characteristics and integration scores were reported. Hierarchical regression models were estimated to assess the association between an organization’s integration score and patients’ outcomes. RESULTS: Of the 28 participating sites, most had electronic medical records functions (71.4%) and had more than 50 staff members (78.6%). The average integration score was 46, with mean scores of 64, 33 and 42 for the structural, financial, and functional sub-domains, respectively. Integration scores were generally higher in sites with 50+ physicians as compared to sites with <50 physicians (52.8 vs. 36.6, respectively), and were also higher in sites owned by hospitals. Among the 8,400 patients reviewed, approximately 60.5% had controlled BP. A positive correlation was observed between integration scores and controlled BP (Pearson coefficient = 0.39, p<0.05). Additionally, patient BP control was better in organizations with integration scores in the highest quartile (64.3%) than in sites in the lowest quartile (56.8%). Although the point estimates were not significant in the hierarchical model, regression analyses suggested that higher integration scores were associated with better BP control outcomes. CONCLUSIONS: This study provides some evidence that better integration of service in physician organizations is associated with better patient outcomes as reported via the PPC-RS.