The National Community for Quality Assurance, a private non-profit organization focused on improving healthcare quality, has ranked Tufts Health Plan and Harvard Pilgrim as the top insurers based on their quality measures from three performance subcategories—consumer experience, prevention and treatment—and NCQA accreditation.

The NCQA rankings, which include 507 private commercial plans and 136 Medicaid plans, specifically reflect insurers’ combined Healthcare Effectiveness Data and Information Set, Consumer Assessment of Healthcare Providers and Systems and NCQA Accreditation standards scores.

“Being recognized for offering the nation’s top-ranked private and Medicaid health plans is tremendous recognition that reflects our unwavering commitment to providing affordable, high-quality health care coverage to our members no matter their age or life circumstance,” said James Roosevelt Jr., CEO of Tufts Health Plan, in a statement.

The rankings are used on ConsumerReports.org, a nonprofit organization that offers consumer education on products and services. To view the entire list, go here.