303 Diagnostics, LLC

303 Diagnostics, LLC is a healthcare organization registered as Clinical Medical Laboratory in Aurora, CO, holding Type 2 (organization) NPI 1750905485 since 2020. The authorized official on file is John Gautereaux, Owner/Lab Director.

✓ Active NPI ✓ Valid NPI checksum

NPI	1750905485
Entity type	Organization (Type 2)
Legal business name	303 Diagnostics, LLC
Practice address	2953 S PEORIA ST STE 260, Aurora, CO, 80014
Phone	7207561550
Enumeration date	2020-05-28
Last updated in NPPES	2023-01-23

Authorized official

Name	John Gautereaux
Title	Owner/Lab Director
Phone	4808187598

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
291U00000X	Clinical Medical Laboratory	Primary	—	—

Copy-ready billing details

Provider: 303 Diagnostics, LLC
NPI: 1750905485
Taxonomy: 291U00000X (Clinical Medical Laboratory)
Address: 2953 S PEORIA ST STE 260, Aurora, CO, 80014

Verify this record

Cross-check NPI 1750905485 against the authoritative CMS record: view 303 Diagnostics, LLC on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-01-23. Verify at npiregistry.cms.hhs.gov.

Where is 303 Diagnostics, LLC located?

The practice location on file with NPPES is in Aurora, CO.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-01-23.