NPI Lookup Tool
Search the official CMS NPPES registry to find NPI numbers for doctors, nurses, physician assistants, and healthcare organizations across all 50 states. Whether you need to verify a provider's NPI for billing, credentialing, or insurance verification, our free NPI lookup tool has you covered.
Live NPI Statistics
Real-time data from the CMS NPI Registry
Total NPI Records by Year
New Registrations (Last 12 Months)
Deactivated by Year (2006–2025)
Deactivated Last 12 Months
Newly Registered Providers
Discover recently added healthcare professionals nationwide
What is an NPI Number?
A National Provider Identifier (NPI) is a unique 10-digit number assigned by CMS (Centers for Medicare & Medicaid Services) to every healthcare provider in the United States. Think of it like a Social Security number, but for doctors and medical organizations.
Type 1 — Individual
Assigned to individual doctors, therapists, nurses, and other practitioners.
Type 2 — Organization
Assigned to hospitals, clinics, pharmacies, and group practices.
Required by Law
Every HIPAA-covered provider must have an NPI for billing and electronic transactions.
Browse by Specialty
Find providers in the most popular medical specialties
Browse by State
Explore providers in the top US states with the most registered healthcare professionals
Who Uses NPI Lookup?
NPI numbers are essential across the healthcare industry and medical ecosystems
Medical Billers
Use NPI numbers for CMS-1500 claim forms, insurance billing, and provider verification to ensure correct reimbursement and fast claim processing without administrative rejection.
Credentialing Teams
Verify provider credentials, check active NPI status, and confirm taxonomy codes during enrollment and onboarding cycles to maintain compliance and state licensing standards.
Patients & Caregivers
Confirm your doctor's NPI number, verify their primary specialty, search active office locations, and check their credentials prior to scheduling appointments or submitting claims.
Why Healthcare Professionals Trust NPILookup
Built on official data sources with reliability you can count on
Official NPPES Data
Every record sourced directly from the CMS NPPES registry — the same database used by hospitals, insurers, and government agencies.
Weekly Sync
Our database refreshes weekly with the latest CMS NPPES release, so you always search the most current provider information.
Location Intelligence
Search providers by state, city, or ZIP code. Explore local healthcare networks and find providers in any market across the US.
Understanding NPI Numbers & The National Provider Identifier
The National Provider Identifier (NPI) was established under the Health Insurance Portability and Accountability Act (HIPAA) of 1996 as a standardized identifier for US healthcare providers. Managed by the Centers for Medicare & Medicaid Services (CMS) through the National Plan and Provider Enumeration System (NPPES), this 10-digit numeric code replaces all legacy identifiers used by health plans, Medicare, Medicaid, and other electronic billing clearinghouses.
Having a standardized NPI number ensures that healthcare administrative processes—such as submitting medical insurance claims, electronic healthcare records (EHR) transfers, and pharmacy prescriptions—are conducted securely, quickly, and with minimal billing friction. All individual doctors, nurses, physicians, chiropractors, physical therapists, dentists, and group entities like hospitals, clinics, and pharmacies are required to obtain and maintain their unique NPI registry records.
Using our free NPI lookup tool, you can quickly search and query the extensive CMS registry database containing over 9.6 million active and deactivated healthcare professionals. Whether you are validating provider taxonomy codes, confirming doctor credentials, or verifying legal billing names for commercial insurance CMS-1500 forms, our search portal parses the official registry records in real-time.
💡 Pro-Tip for Medical StaffWhen performing credentials verification, always double-check the provider status (Active vs. Deactivated) and verify if the primary taxonomy code aligns with the specialty they are billing for. Legally, billing under incorrect taxonomy codes is one of the most common causes of insurance claim denials.
Frequently Asked Questions
?What is an NPI number?
An NPI (National Provider Identifier) is a unique 10-digit identification number assigned to healthcare providers in the United States by the Centers for Medicare & Medicaid Services (CMS). It is a HIPAA requirement used for electronic transactions, insurance claims, and medical billing.
?Is NPILookup free to use?
Yes! NPILookup is 100% free to search and access. We source our records directly from the public CMS NPPES registry to help providers, billing teams, and patients lookup NPI numbers without any registration or cost.
?How often is the NPI data updated?
Our NPI registry database is synchronized weekly with the official CMS NPPES dataset, ensuring you have access to the latest registrations, deactivated listings, and updated practice address changes.
?What is the difference between a Type 1 and Type 2 NPI?
Type 1 NPIs are for individual sole practitioners, such as doctors, dentists, nurses, and physical therapists. Type 2 NPIs are for organizational providers, such as hospitals, group practices, clinics, nursing homes, and pharmacies.
?How do I get an NPI number?
Healthcare providers can apply for an NPI number online through the official CMS NPPES portal (nppes.cms.hhs.gov) or by mailing a paper application form. Registration is free and typically processed within a few days.
?Can an NPI number be deactivated or deleted?
Yes, NPI numbers can be deactivated. This usually occurs if a provider retires, passes away, has their license revoked, or if an organization closes. Deactivated NPI numbers are not deleted from the registry but are marked with a deactivated status and enumeration date.
?What is a taxonomy code in the NPI registry?
An NPI taxonomy code is a unique 10-character alphanumeric code that indicates the provider's specific medical specialty and area of practice. It is used by insurance companies to verify credentialing eligibility for specific medical services.
?How do I find a doctor's NPI number by name?
You can find a doctor's NPI by using our homepage search tab. Select the 'Name Search' option, enter the provider's first and last name, and optionally filter by state to narrow down the search results instantly.
?Is my personal information public on the NPI registry?
Yes. The official CMS NPI registry is a matter of public record. Information such as the provider's legal name, business practice address, business telephone number, and specialty taxonomy codes is publicly accessible.
?Do nurses and physical therapists need NPI numbers?
Yes. Any healthcare professional or practitioner who submits electronic transactions, performs medical billing, or belongs to a HIPAA-covered entity must obtain an NPI number, regardless of whether they are a physician.
?What should I do if my NPI registry info is incorrect?
If your registry information is outdated or incorrect, you must log in to the official CMS NPPES portal to update your provider profile. Once CMS processes the changes, they will automatically reflect in our weekly database sync.