Trade-offs in locational choices for care coordination resources in accountable care organizations.

Background: Care coordination is central to accountable care organizations (ACOs), especially in Medicaid where many patients have complex medical and social needs. Little is known about how to best organize care coordination resources in this context, particularly whether to centralize them. We examined how care coordinators' location, management, and colocation of both (within ACO headquarters, practice sites, or other organizations) relate to care quality and coordination.

Methods: We conducted a cross-sectional analysis of surveys administered to a sample of practice sites covering all 17 Medicaid ACOs in Massachusetts ( n = 225, response rate = 64%). We applied controlled, cluster-robust regressions, adjusting the significance threshold for the number of ACO clusters, to assess how clinical information sharing across settings, care quality improvement, knowledge of social service referral, and cross-resource coordination (i.e., the ability of multiple resources to work well together) relate to where care coordinators were physically located and/or managed.

Results: Centralizing care coordinators at ACO headquarters was associated with greater information sharing. Embedding care coordinators in practices was associated with greater care quality improvement. Embedding coordinators at other organizations was associated with less information sharing and care quality improvement. Managing coordinators at practice sites and other organizations were associated with better care quality improvement and cross-resource coordination, respectively. Colocating the two functions showed no significant differences.

Practice Implications: Choosing care coordinators' locations may present trade-offs. ACOs may strategically choose embedding care coordinators at practice sites for enhanced care quality versus centralizing them at the ACO to facilitate information sharing.