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As part of the Obama Administration’s efforts to make our healthcare system more transparent, affordable, and accountable, the Centers for Medicare & Medicaid Services (CMS) has prepared a public data set, the Provider Utilization and Payment Data Physician and Other Supplier Public Use File (herein referred to as “Physician and Other Supplier PUF”), with information on services and procedures provided to Medicare beneficiaries by physicians and other healthcare professionals. The Physician and Other Supplier PUF contains information on utilization, payment (allowed amount and Medicare payment), and submitted charges organized by National Provider Identifier (NPI), Healthcare Common Procedure Coding System (HCPCS) code, and place of service. This PUF is based on information from CMS’s National Claims History (NCH) Standard Analytic Files (SAFs). The data in the Physician and Other Supplier PUF covers calendar year 2012 and contains 100% final-action (i.e., all claim adjustments have been resolved) physician/supplier Part B non-institutional line items (excluding durable medical equipment) for the Medicare fee-for-service (FFS) population.