Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

1st Class Sleep Diagnostic Center Inc

Sleep Disorder Diagnostic Clinic/Center in Centreville, VA · enumerated 2006 · authorized official Erika King, Auditor/Collector.

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

National Provider Identifier

1265518005

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Registry record

Entity type Organization (Type 2)

Legal business name 1st Class Sleep Diagnostic Center Inc

Practice address 14631 Lee Highway, Suite 401, Centreville, VA, 20121

Phone (703) 385-9222

Fax (703) 385-0882

Enumeration date Oct 27, 2006

Last updated in NPPES Mar 3, 2015

Taxonomy & classification

261QS1200X Sleep Disorder Diagnostic Clinic/Center Ambulatory Health Care Facilities · License 1234748 (VA) Primary

291U00000X Clinical Medical Laboratory Laboratories · License 107828 (VA) Secondary

Authorized official

Name Erika King

Title Auditor/Collector

Phone (571) 281-3553

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.

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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 2015-03-03. Verify at npiregistry.cms.hhs.gov.

Where is 1st Class Sleep Diagnostic Center Inc located?

The practice location on file with NPPES is in Centreville, VA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-03.