Final answer:
As an internal medicine physician, Joseph Smith would have an NPI (National Provider Identifier) number. However, his NPI number is not publicly available information.
Step-by-step explanation:
As an internal medicine physician, Joseph Smith would have an NPI (National Provider Identifier) number. However, his NPI number is not publicly available information. NPI numbers are unique 10-digit identification numbers assigned to healthcare providers in the United States. They are used for administrative and billing purposes.