Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brook Edward Walker, O.D.

Optometrist in Ferndale, WA · enumerated 2006.

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

National Provider Identifier

1356442917

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Registry record

Entity type Individual (Type 1)

Name Dr. Brook Edward Walker

Credential O.D.

Sex Male

Practice address 1815 Main St, Ferndale, WA, 98248

Phone (360) 393-4000

Fax (360) 393-4004

Enumeration date Sep 26, 2006

Last updated in NPPES Aug 4, 2014

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4007 (WA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
2006335	Medicaid	WA	-
2006626	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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Brook Walker?

Brook Walker is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-04.