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Impact of New York State's Medicaid Breast Cancer Selective Contracting Policy on Access and Quality of Care Outcomes.

The New York State Medicaid Breast Cancer Selective Contracting policy was implemented in 2009 and mandates that Medicaid enrollees receive breast cancer surgery at high-volume hospital and ambulatory surgery facilities. This article evaluates the policy's impact on 8 access and quality of care measures prepolicy and postpolicy implementation. Linked New York State (NYS) Cancer Registry, Statewide Planning and Research Cooperative System, and NYS Medicaid encounter and claim data were used to calculate measures. Interrupted time series analysis was conducted to estimate the change in measure rates prepolicy and postpolicy implementation. Findings indicate that the policy was successful in shifting surgeries from low- to high-volume facilities and that high-volume facilities outperformed low-volume facilities on several access and quality of care measures.