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What is a CCN?

The CMS Certification Number (CCN) is assigned to an agency to verify that a provider has been Medicare certified and for what type of services. The CCN was previously known as the Medicare/Medicaid Provider Number or the Online Survey, Certification and Reporting (OSCAR) Number and is sometimes called the billing number.

The CCN is required to complete the registration process. The CCN is a 6-digit number/character combination.

The CCN is different from the National Provider Identifier (NPI), but the two numbers are linked. The NPI is assigned to covered health care providers and is used for HIPAA standard transactions. Your agency’s billing department can be a helpful resource in identifying the CCN.

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If you have any questions please contact the Fields Research H-CAHPS Team at (513) 821-6266