This report presents findings from Mathematica’s study of how Medicare Advantage (MA) has evolved over its first three years. It focuses on plan availability and enrollment, benefits and premiums, quality of care, and firms’ perspectives and decisionmaking. The findings provide evidence of...

The National Health Plan Collaborative (NHPC) was formed in 2004 to bring together national and regional health plans to reduce racial and ethnic disparities. This brief summarizes findings from Mathematica’s evaluation, provides background, and describes accomplishments. It also reviews...

Policymakers struggle with how to ensure adequate access to physician services in public programs such as Medicaid and SCHIP. The authors synthesize research on this topic and provide a framework that policymakers can use to identify and measure barriers to access, determining where and why...

This report presents findings from Mathematica’s study of how Medicare Advantage (MA) has evolved over its first three years. It focuses on plan availability and enrollment, benefits and premiums, quality of care, and firms’ perspectives and decisionmaking. The findings provide...

The Integrated Delivery System Research Network (IDSRN) is a major initiative of the Agency for Healthcare Research and Quality that seeks to further the agency’s goals of knowledge transfer and movement of research to practice. The IDSRN involves contracts with nine teams of...