Understanding National Provider Identifier (NPI) Numbers
Explanation:
National Provider Identifier (NPI) Overview
The National Provider Identifier (NPI) is a unique identification number for covered health care providers under the Health Insurance Portability and Accountability Act (HIPAA).
10-Digit Numeric Identifier
The correct answer to the question is c. A unique 10-digit number. An NPI is a 10-digit numeric identifier that is separate from a healthcare provider's phone number, area code, or other personal details.
Joseph Smith's NPI Number
Therefore, Joseph Smith's phone number with area code 858 does not determine his NPI number. His NPI number will be a unique 10-digit identifier assigned specifically to him as a healthcare provider.