Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William L. Clark, M.D., P.S.

Q: What type of organization is William L. Clark, M.D., P.S.?

William L. Clark, M.D., P.S. is registered in NPPES as a Orthopaedic Surgery Physician (its primary provider taxonomy).

Orthopaedic Surgery Physician in Burien, WA · enumerated 2007 · authorized official William Clark, President/Physician.

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

National Provider Identifier

1336328277

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Registry record

Entity type Organization (Type 2)

Legal business name William L. Clark, M.D., P.S.

Practice address 16259 Sylvester Rd Sw, Ste 501, Burien, WA, 98166

Phone (206) 243-1100

Fax (206) 431-0835

Enumeration date Oct 28, 2007

Last updated in NPPES Oct 28, 2007

Taxonomy & classification

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License MD00033039 (WA) Primary

Authorized official

Name William Clark

Title President/Physician

Phone (206) 243-1100

Other identifiers

Identifier	Type	State	Issuer
157776	Other	WA	LABOR & INDUSTRY
71173636	Medicaid	WA	-

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

What type of organization is William L. Clark, M.D., P.S.?

William L. Clark, M.D., P.S. is registered in NPPES as a Orthopaedic Surgery Physician (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 2007-10-28.