Provider of Service File (POS)
: The file contains an individual record for each Medicare-approved provider and is updated quarterly.
: Centers for Medicare & Medicaid Services (CMS)
Data Years Available
: Administrative data
: All Medicare certified providers of service.
: The Provider of Services (POS) Extract is created from the QIES (Quality Improvement Evaluation System) database. These data include provider number, name, and address and characterize the participating institutional providers. The data are collected through the Centers for Medicare & Medicaid Services (CMS) Regional Offices.
Response rate and sample size