Which Form Locator stores the NPI field?

• A. Form Locator 50 - Payer Identification
• B. Form Locator 58 - Insured's Name
• C. Form Locator 56 - NPI
• D. Form Locator 53 - Assignment of Benefit Certification

Answer: (C)

The field labeled NPI on the UB-04 form is where the National Provider Identifier is stored. This field is dedicated to reporting the provider’s unique 10-digit NPI, which HIPAA uses to identify the billing or rendering provider across electronic claims.

So, the NPI field is the correct choice because it specifically carries the provider identifier, while the other fields are for different information: one is used for payer identification, another for the insured’s name, and another for assignment-of-benefits certification.