Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Highline Sleep Disorder Center, LLC

Sleep Disorder Diagnostic Clinic/Center in Burien, WA · enumerated 2006 · authorized official Allen Clark, Partner.

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

National Provider Identifier

1598868127

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Registry record

Entity type Organization (Type 2)

Legal business name Highline Sleep Disorder Center, LLC

Other name <Unavail>

Practice address 16233 Sylvester Rd Sw, Suite G-70, Burien, WA, 98166

Phone (206) 988-5779

Fax (206) 246-2380

Enumeration date Sep 7, 2006

Last updated in NPPES Jan 31, 2008

Taxonomy & classification

261QS1200X Sleep Disorder Diagnostic Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Allen Clark

Title Partner

Phone (253) 852-0078

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

What type of organization is Highline Sleep Disorder Center, LLC?

Highline Sleep Disorder Center, LLC is registered in NPPES as a Sleep Disorder Diagnostic Clinic/Center (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-31.