Job analysis surveys are a key component in validating certification examinations in the medical specialties. Few organizations, however, confirm the survey data-gathering process using external data. This article demonstrates how an organization can use data from the Centers for Medicare & Medicaid Services (CMS) to supplement job analysis survey results using a real example from medical imaging. Organizations can also use CMS data longitudinally to predict which procedures are increasing and decreasing in frequency. This prediction can greatly assist with future comprehensive job analyses or smaller, more targeted updates between comprehensive job analyses.