The National Provider Identifier (NPI) is a unique 10-digit identification number issued by the Centers for Medicare & Medicaid Services (CMS) to healthcare providers in the United States. Yes, you need an NPI to bill Medicare, Medicaid, and most insurance companies. There are two types: Type 1 for individual providers and Type 2 for organizations or group practices. Obtaining an NPI is free and can be done through the National Plan and Provider Enumeration System (NPPES). You only need to apply once, as your NPI remains the same throughout your career, even if you change specialties, locations, or employers. Your NPI must be included on all claims submissions and is required for credentialing with insurance companies.
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