NPI Registry Resources & Official Links

The authoritative source for NPI numbers. Look up any US healthcare provider, update your own NPI record, and download the full NPI registry data file.

Apply for a new NPI, update your existing NPI record, manage authorized officials, and handle deactivations through the official CMS portal.

Download the full NPPES NPI Registry data file (updated monthly). The full replacement file contains all active NPI records and is available for free.

Search 9,200,000+ US providers by name, NPI, taxonomy, or location. Includes PECOS enrollment status and OIG exclusion flags.

The official CMS portal for Medicare provider enrollment. Submit new enrollment applications, update existing enrollments, and manage revalidation.

CMS's lookup for verifying that an ordering or referring physician is enrolled in Medicare — required for home health, DME, lab, and imaging claims.

CMS's public dataset of Medicare-enrolled physicians and clinicians, including PAC IDs, practice locations, and quality metrics. Available on data.cms.gov.

Verify Medicare enrollment by PAC ID or Enrollment ID. See provider type, practice address, and linked NPI number.

Official CMS contact information for Medicare provider inquiries, NPI registration support, PECOS enrollment questions, and billing assistance. Includes Medicare Administrative Contractor (MAC) contacts.

90K+ new NPIs are enumerated every month. Get alerted when a new doctor, specialist, or practice opens in your territory — by specialty and geography. Free plan available: 3 territories, weekly alerts, no card.

The official OIG tool to search the List of Excluded Individuals and Entities (LEIE). Search by name, NPI, or other identifiers to verify a provider is not excluded.

Monthly download of the complete LEIE database in CSV format. Used for automated batch screening of provider panels against OIG exclusions.

Official OIG guidance on compliance program requirements, exclusion authorities, and the consequences of employing excluded providers.

Automated monthly LEIE screening for your full provider panel. Receive alerts when any provider's exclusion status changes. Free for up to 25 providers.

The authoritative source for NUCC taxonomy codes. The NUCC publishes the official code set used in NPI records, HIPAA transactions, and claims processing.

Browse all 400+ NUCC taxonomy codes organized by specialty group. Look up any code's official description, grouping, and provider count.

Programmatic access to all 9M+ provider records. Search by name, NPI, taxonomy, and location. Includes PECOS enrollment and LEIE status. Free trial available.

Official CMS open data APIs covering Medicare enrollment, claims, cost reports, and quality data. Includes the NPI Registry, Physician Compare, and PECOS datasets.

CMS's free public REST API for the NPPES NPI Registry. Allows up to 1,200 requests per minute. Returns basic NPI record data without PECOS or LEIE status.

The regulatory framework establishing the NPI as the standard healthcare provider identifier. Published under HIPAA administrative simplification requirements.

The statutory basis for OIG exclusion authority under the Social Security Act. Covers mandatory and permissive exclusions, reinstatement procedures, and civil monetary penalties.