Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Stephen L. Antonopulos, A.T.,C

Specialist in Englewood, CO · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1437114675

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Registry record

Entity type Individual (Type 1)

Name Mr. Stephen L. Antonopulos

Credential A.T.,C

Sex Male

Practice address 13655 Broncos Pkwy, Englewood, CO, 80112

Phone (303) 649-9000

Enumeration date Apr 19, 2006

Last updated in NPPES Aug 6, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers Primary

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 → Validate an NPI →

Frequently asked questions

Where does Stephen Antonopulos practice?

The practice location on file with NPPES is in Englewood, CO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Stephen Antonopulos?

The National Provider Identifier (NPI) for Stephen Antonopulos is 1437114675, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-06.