National Plan and Provider Enumeration System –
The NPI is the standard for a unique identifier for health care providers for use in the health care system. NPPES is the application that health care providers must use to be awarded an NPI number.
Within the NPPES, there are two types of providers:
• Type 1 Providers – Health care providers who are individuals, including physicians, dentists, and all sole proprietors (An individual is eligible for only one NPI.)
• Type 2 providers – Health care providers who are organizations, including physician groups, hospitals, nursing homes, and the corporation formed when an individual incorporates him/herself.
Further reading –
https://nppes.cms.hhs.gov/webhelp/nppeshelp/NPPES%20FAQS.html#How-can-I-gain-access-to-my-Type-2-NPI