Final answer:
The National Provider Identifier (NPI) is the 10-digit number that identifies a physician's medical specialty and is necessary for administrative and billing purposes in the U.S. healthcare system.
Step-by-step explanation:
The term for the 10-digit number that identifies the physician's medical specialty is called the National Provider Identifier (NPI). The NPI is unique to each provider and is used for administrative and billing purposes in the United States healthcare system. It is mandatory for all healthcare providers, including physicians, to obtain an NPI if they are involved in electronic transactions as defined in the Health Insurance Portability and Accountability Act (HIPAA).
he NPI is a unique identification number for health care providers, including physicians, issued by the Centers for Medicare & Medicaid Services (CMS). It is used to identify physicians and other health care providers in various administrative and financial transactions.