Mapping colocation: Using national provider identified data to assess primary care and behavioral health colocation.

Introduction: Evidence supports that integrated behavioral health care improves patient outcomes. Colocation, where health and behavioral health providers work in the same physical space, is a key element of integration, but national rates of colocation are unknown. We established national colocation rates and analyzed variation by primary care provider (PCP) type, practice size, rural/urban setting, Health and Human Services region, and state.

Method: Data were from the Centers for Medicare & Medicaid Services' 2018 National Plan and Provider Enumeration System data set. Practice addresses of PCPs (family medicine, general practitioners, internal medicine, pediatrics, and obstetrician/gynecologists), social workers, and psychologists were geocoded to latitude and longitude coordinates. Distances were calculated; those < 0.01 miles apart were considered colocated. Bivariate and multivariate analyses were conducted, and maps were generated.

Results: Of the 380,690 PCPs, > 44% were colocated with a behavioral health provider. PCPs in urban settings were significantly more likely to be colocated than rural providers (46% vs. 26%). Family medicine and general practitioners were least likely to be colocated. Only 12% of PCPs who were the sole PCP at an address were colocated compared with 48% at medium-size practices (11-25 PCPs).

Discussion: Although colocation is modestly expanding in the United States, it is most often occurring in large urban health centers. Efforts to expand integrated behavioral health care should focus on rural and smaller practices, which may require greater assistance achieving integration. Increased colocation can improve access to behavioral health care for rural, underserved populations. This work provides a baseline to assist policymakers and practices reach behavioral health integration. (PsycInfo Database Record (c) 2020 APA, all rights reserved).