The increased availability of wearable devices, their relatively low cost, and very wide range of applications all have the potential to transform the provision of health care by increasing the use of health services outside of acute care settings such as hospitals. In turn, reducing the use of acute health services and strengthening the provision of primary care may enhance the sustainability of health systems and improve population health through facilitating increased access to care for underserved individuals and populations including those living in rural areas or other areas with insufficient availability of basic or specialized health services. A continuously increasing body of evidence examining wearable devices indicates that, under the right circumstances, wearable devices present great potential to strengthen primary care. Specifically, wearable devices could do so through (i) improved access to care when integrated as components of a larger health ecosystem; (ii) enhanced opportunities for engagement in health promotion and maintenance activities; (iii) modernized and streamlined data collection when data is accurate, reliable, and relevant; (iv) better data sharing and integration across individuals seeking care, health professionals, and services; and (v) cost savings through prevention, early intervention, reduced complications, or limited need for in-person visits.