# NPPES NPI Registry, free: Business verification API

> NPI Registry Public Search is a free directory of all active National Provider Identifier (NPI) records.

NPPES NPI Registry's Free plan for the business verification API costs $0.00 per 1,000 companies. We check each provider's docs for 11 fields. NPPES NPI Registry's docs list 1: Registered name.
NPPES NPI Registry limits how many calls you get but gives no number.
In [our business verification API benchmark](https://datacircle.dev/best-business-verification-api.txt), this plan scores 76.7 out of 100.
We rank 1,422 plans for business verification APIs by price. Half the plans cost $7.895 or less per 1,000 companies. This plan and 191 others tie for the lowest price per 1,000 companies of the 1,422 plans. [See the best free business verification API plan.](https://datacircle.dev/best-business-verification-api.txt)
[Scoris's €19 pack](https://datacircle.dev/business-verification-apis/scoris/19-pack/llms.txt) covers any number of companies in 8 countries only. Scoris's €19 pack costs more up front than CharityAPI's $15 monthly plan.
[GovFiles](https://datacircle.dev/business-verification-apis/govfiles/top-up/llms.txt), [CompanyData.com](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly/llms.txt) and [Didit](https://datacircle.dev/business-verification-apis/didit/top-up-from-50/llms.txt) are the best business verification API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/business-verification-apis/nppes-npi-registry/free
- [Business verification API: the 14 best providers compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://npiregistry.cms.hhs.gov/api-page?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Request: `GET https://npiregistry.cms.hhs.gov/api/`
- API key: not needed
- Its API docs: https://npiregistry.cms.hhs.gov/api-page?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Sold by: NPPES NPI Registry (https://npiregistry.cms.hhs.gov?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 9%
- Registered name: ✓

## Score

- Overall score: 76.7
- Price score: 100
- Accuracy score: 61
- Cost to get started score: 100
- Bundle score: 0
- Performance score: 100

## Price

- $ per 1,000 companies: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: NPI Registry Public Search is a free directory of all active National Provider Identifier (NPI) records.

## Data

- Freshness: 1 day
- Countries: United States
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 0.00 s

## The call

- You send: version "2.1", one of number or organization_name. Optional: enumeration_type, taxonomy_description, name_purpose, first_name, use_first_name_alias, last_name, address_purpose, city, state, postal_code, country_code, limit, skip
- Method: GET
- Path: /api/

## About the plan

- Plan: Free
- Who can get it: anyone

## The 11 fields the plan's answer can hold

NPI, enumeration type, organization name, other names, authorized official name, taxonomies, primary practice location address, mailing address, practice location addresses, other identifiers, endpoints

## NPPES NPI Registry's plans (1)

- [NPPES NPI Registry, free](https://datacircle.dev/business-verification-apis/nppes-npi-registry/free/llms.txt): $0.00 per 1,000, 9% complete, 1 day

## NPPES NPI Registry's calls (1)

- `GET /api/`: [NPPES NPI Registry, free](https://datacircle.dev/business-verification-apis/nppes-npi-registry/free/llms.txt)

## NPPES NPI Registry's APIs (3)

- [NPPES NPI Registry: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/nppes-npi-registry/free/llms.txt)
- [NPPES NPI Registry: company discovery API pricing, 1 plan](https://datacircle.dev/company-discovery-apis/nppes-npi-registry/free/llms.txt)
- [NPPES NPI Registry: people search API pricing, 1 plan](https://datacircle.dev/people-search-apis/nppes-npi-registry/free/llms.txt)

## NPPES NPI Registry: business verification API alternatives

- [INSEE, free](https://datacircle.dev/business-verification-apis/insee/free/llms.txt): $0.00 per 1,000, 45% complete, 24 hours
- [CompanyVerify, free pilot, GET /v1/uk/company/search](https://datacircle.dev/business-verification-apis/companyverify/free-pilot-get-v1-uk-company-search/llms.txt): $0.00 per 1,000, 55% complete, 24 hours
- [eucompliance.tools, free, no key, GET /free/company](https://datacircle.dev/business-verification-apis/eucompliance-tools/free-no-key-get-free-company/llms.txt): $0.00 per 1,000, 55% complete, live
- [Brreg, free](https://datacircle.dev/business-verification-apis/brreg/free/llms.txt): $0.00 per 1,000, 64% complete, live
- [National Tax Agency, free](https://datacircle.dev/business-verification-apis/national-tax-agency/free/llms.txt): $0.00 per 1,000, 36% complete, 1 day

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-08.

- https://npiregistry.cms.hhs.gov?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://npiregistry.cms.hhs.gov/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://npiregistry.cms.hhs.gov/api-page?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://npiregistry.cms.hhs.gov/demo-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://www.cms.gov/regulations-and-guidance/administrative-simplification/nationalprovidentstand/dataDissemination?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing