An MPN is issued by CMS and used by Medicare for surveys, certification, and patient assessments. A facility must pass a Medicare survey/inspection to obtain an MPN. Providers that do not participate in the Medicare program will not have an MPN.
MPN is also known as an OSCAR (Online Survey, Certification and Reporting) Number, Medicare Identification Number, and Provider Number.
Though no longer the primary identification method, the MPN was once the primary identifier for Medicare and Medicaid providers. MPN was officially renamed to CMS Certification Number (CCN) by CMS on April 20, 2007 and, at this time, the National Provider Identifier (NPI) became the new primary identification standard for Medicare/Medicaid providers.
The MPN (or CCN), however, continues to be issued to providers to confirm Medicare/Medicaid certification for certifications, surveys, and patient assessments.