The Triple Aim recommends that improvements to the US health care delivery system focus on the three interdependent goals of high quality care, reduced per capita cost and improved population health (Berwick, Nolan, & Whittington, 2008). Significant challenges exist to accomplish these improvements; however, Berwick, Nolan and Whittington (2008) identify some promising innovations that have the potential to disrupt the current primary health care service model. One of the innovations recognized is the retail clinic model of health care delivery. The number of retail clinics has increased rapidly since the first clinic opened in 2000. Retail clinics offer health care services for diagnoses of specific acute illnesses, as well as vaccinations and preventive care, typically within a retail setting such as Walmart, Target, pharmacy or grocery store. The clinics are sometimes referred to as convenient care clinics to reflect their patient-centric access to care - no appointment is required, weekend and evening hours are offered, and wait times are shorter than at traditional health care facilities. One approach to externally evaluate the performance of retail clinics is to examine them within the triple aim framework of quality of care, per capita cost and population health. Metrics to evaluate health care services for each triple aim goal have been recommended by the Institute for Healthcare Improvement (Stiefel & Nolan, 2012). The specific measures used by individual organizations are determined by the objectives of the organization, available resources and the availability of data. This paper will discuss the metrics available to retail clinics and review published data for these metrics to determine the impact of retail clinic health care services on the triple aim goals.