Earlier this spring, the nation's four primary care specialty societies issued a joint statement describing the principles of a patient-centered medical home (PCMH). With Fund support, the National Committee for Quality Assurance worked with the professional societies to translate those principles into practical criteria that payers can use to certify physician practices as PCMHs—for example, a practice must have written standards for patient access and communication, follow evidence-based guidelines, and have a referral tracking system. In phase 2, project staff will: 1) disseminate the measures nationally and advise organizations on their use; 2) further develop and test measures related to the quality of patient-physician communication, family and community involvement in care, and care coordination; and 3) analyze the relationship between the systems used in PCMHs and care efficiency—information needed to reform payment for primary care services.