Primary care physicians' participation in the Medicare shared savings program and preventive services delivery: Evidence from the first 7 years.

Huang H, Zhu X, Wehby GL. Primary care physicians' participation in the Medicare shared savings program and preventive services delivery: Evidence from the first 7 years. Health services research. 2022 Oct 1; 57(5):1182-1190.

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Abstract:

OBJECTIVE: To evaluate whether primary care physicians' participation in the Medicare Shared Savings Program (MSSP) is associated with changes in their preventive services delivery. DATA SOURCES: Medicare Provider Utilization and Payment Physician and Other Supplier Public Use File and MSSP Accountable Care Organizations (ACO) Provider-Level Research Identifiable File from 2012 to 2018. STUDY DESIGN: The design was a two-way fixed effects model estimating within-provider changes in preventive services delivery over time controlling for provider time-invariant characteristics, national time trends, and characteristics of served patients. The following preventive services were evaluated: influenza vaccination, pneumococcal vaccination, clinical depression screening, colorectal cancer screening, breast cancer screening, Body Mass Index (BMI) screening and follow-up, tobacco use assessment, and annual wellness visits. Both the likelihood of providing services and the volume of services delivered were evaluated. DATA COLLECTION/EXTRACTION METHODS: Secondary data linked at the provider level. PRINCIPAL FINDINGS: MSSP participation was associated with an increase in the likelihood of providing influenza vaccination (0.7 percentage-points), pneumococcal vaccination (2.0 percentage-points), clinical depression screening (2.1 percentage-points), tobacco use assessment (0.3 percentage-points), and annual wellness visits (4.1 percentage-points). A similar increase was found for the volume of services delivered per 100 patients for several preventive services: influenza vaccination (0.18), pneumococcal vaccination (0.56), clinical depression screening (0.46), and annual wellness visits (1.52). MSSP participation was associated with a decrease in the likelihood (-0.4 percentage-points) and the volume of colorectal cancer screening (-0.03). CONCLUSIONS: Primary care physicians' participation in MSSP was associated with an increase in the likelihood and the volume of several preventive services.