This measure evaluates the extent primary care physicians (PCPs) provide care-based and procedural-based services core to primary care. For each PCP, the resulting value reflects an average of the weighted proportion of services within each category provided during the measurement period. Primary care providers (PCPs) caring for at least 30 patients per measurement year score between 0 and 100 in scaled scores of comprehensiveness. Scores are based on weighted averages of 19 care-based and 22 procedural-based core primary care services. Initial Population: Primary care physicians who have provided care to 30 or more patients regardless of age within the measurement period, see Figure 1: Physician and Care Site Identifier in the "Additional Supporting Documentation" Section. Throughout this application, since the fields do not accept scientific formulas, tables or figures, we have attached those items in the "Additional Supporting Documentation" section.