what is an npi number

An NPI number, or National Provider Identifier, is a 10-digit numeric identifier given to all covered health care providers as an Administrative Simplification Standard under HIPAA. It is a unique identification number that does not carry other information about health care providers, such as their state or medical specialty. The NPI must be used in administrative and financial transactions adopted under HIPAA, and it is used to increase the efficiency and effectiveness of the electronic transmission of personal health information