NIH National Library of Medicine (ClinicalTrials.gov)

ClinicalTrials.gov Registered Studies

Name: ClinicalTrials.gov Registered Studies
Creator: NIH National Library of Medicine (ClinicalTrials.gov)
License: https://creativecommons.org/licenses/by/4.0/

Registered clinical studies by sponsor, phase, status, enrollment, and site count.

ClinicalTrials.gov registrations normalized to a sponsor entity: study phase, status, type, enrollment, start and completion dates, conditions, interventions, and per-study site counts (1.87M trial-site rows). Records show what sponsors registered, with the first-posted date.

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Records: 112,288 trials · 1,870,592 trial-site rows
Coverage: 2000-01-01 → 2026-07-24
Refresh: Weekly (ClinicalTrials.gov)
Source: NIH National Library of Medicine (ClinicalTrials.gov)

What's in it

Tables in this dataset

Table	Rows	What it holds
clinical_trials	112,288	Study registrations: sponsor, phase, status, enrollment
trial_sites	1,870,592	Investigator sites per study, geocoded

Free samples

Download real sample slices

A few hundred real rows each, released under CC BY 4.0 (the underlying records are U.S. federal works in the public domain). Inspect the schema, then build a Parse for the live feed.

Clinical trials sampleclinical-trials.sample.csv · 400 rows · CSVGET

Schema

Key public fields

Field	Description
`nct_id`	ClinicalTrials.gov identifier
`sponsor_name`	Lead sponsor (normalized)
`phase`	Trial phase
`overall_status`	Recruiting / completed / terminated, etc.
`enrollment`	Target/actual enrollment
`first_posted_date`	Date first posted to ClinicalTrials.gov
`site_count`	Number of investigator sites

Provenance

Where every row comes from

ClinicalTrials.gov API

Observational data

Every field is a record that exists in a named federal source, with its date — never a score, prediction, or characterization of any company. Public-source records are matched to employers by normalized name and address; match tier and confidence are disclosed on every response. FirmStanding is not a consumer reporting agency and this is not a consumer report — not for use in determining eligibility for employment, credit, insurance, tenancy, or any other purpose regulated by the Fair Credit Reporting Act (FCRA).

Who links this data

Verticals that use it

Pharma & med-device salesCRO / site networksLab-equipment resellersLife-sciences recruiting

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