What type of number is usually used to identify the physician who provided each service on an insurance claim form?

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NPI (National Provider Identifier) numbers are the most commonly used numbers to identify physicians on insurance claim forms. They are unique 10-digit numbers assigned to healthcare providers by the Centers for Medicare and Medicaid Services (CMS). This number is used to identify the healthcare provider in all electronic transactions, including insurance claims. UPIN numbers were previously used, but they have been phased out and are no longer accepted. Social Security numbers and state medical license numbers are not typically used to identify physicians on insurance claim forms.

What Type of Number Is Usually Used to Identify the Physician