Introduction: Access to high-quality health care is a crucial social determinant of health. We describe the implementation of an "expanded medical home" partnering a primary care practice (the Ypsilanti Health Center [YHC]) with local school-based health centers (the Regional Alliance for Healthy Schools [RAHS]), and to assess whether this model improves access to and quality of care for shared patients.Methods: Using the Consolidated Framework for Implementation Research, we define the steps in, barriers to, and facilitating factors in implementing the expanded medical home model. Visits and quality measures were assessed for patients seen by YHC only versus YHC/RAHS at baseline and during the intervention.Results: At baseline, patients seen at YHC/RAHS had higher compliance with most quality metrics compared with those seen at YHC only. The proportion of shared patients significantly increased because of the intervention (P < .001). Overall, patients seen in the expanded medical home had a higher likelihood of receiving quality metric services than patients in YHC only (odds ratio, 1.8; 95% confidence interval, 1.57-2.05) across all measures.Conclusions: Thoughtful and intentional implementation of an expanded medical home partnership between primary care physicians and school-based health centers increases the number of shared highrisk adolescent patients. Shared patients have improved compliance with quality measures, which may lead to long-term improved health equity. Adolescence is a critical stage in development in which health behaviors, including those that will last a lifetime, are adopted.1 These health behaviors are shaped by multiple social forces on personal, family, community, and national levels.2 These forces, also known as social determinants of health (SDOHs), are defined by the World Health Organization as "the conditions in which people are born, grow, live, work, and age," and are the influences that result in health inequities.3 HealthyPeople 2020, a national preventive health initiative in the United States, developed a framework to address 5 key areas of SDOHs. These notably include health and health care, a critical component of which is improving access to primary care.4 This is particularly applicable to the adolescent population who may experience numerous barriers to accessing health care, contributing to health inequities in this vulnerable population.
5The relationship between health outcomes and socioeconomic status (SES) has been well-researched; minority adolescents and those with low SES have been shown to have low rates of preven- tive care such as immunizations, poor management of common chronic diseases (eg, asthma and obesity), and limited access to mental health and substance abuse services. 6 -8 In addition, adolescents with low SES are less likely to have a source of primary care and yearly preventive visits. 8,9 Adolescents with low SES, those who are uninsured, and those who are members of black/Hispanic families are less likely to receive health care in a medical ho...