The document summarizes a study on how Massachusetts achieved near-universal health insurance coverage through its 2006 health reform law. Key factors in its success were: 1) Using existing data to automatically enroll eligible residents in Medicaid and the new Commonwealth Care program; 2) Creating a single, integrated eligibility system across multiple programs; and 3) Conducting an intensive public education campaign along with grants to community groups for outreach and enrollment assistance. These innovative strategies were highly effective in quickly enrolling many newly eligible residents at a lower administrative cost than traditional individual applications. Lessons from Massachusetts' model could inform national and state health reform efforts.