Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marshall William Anderson, MD

Occupational Medicine Physician in Mount Vernon, WA · enumerated 2005.

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

National Provider Identifier

1417942038

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Registry record

Entity type Individual (Type 1)

Name Dr. Marshall William Anderson

Credential MD

Sex Male

Practice address 1400 E Kincaid St, Mount Vernon, WA, 98274

Phone (360) 848-4150

Fax (360) 848-4169

Enumeration date Sep 20, 2005

Last updated in NPPES Oct 22, 2021

Taxonomy & licenses

2083P0901X Public Health & General Preventive Medicine Physician Allopathic & Osteopathic Physicians · License MD00037814 (WA) Secondary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License MD00037814 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1009946	Medicaid	WA	-
263663	Other	WA	LABOR & INDUSTRIES

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 specialty is Marshall Anderson?

Marshall Anderson is registered in NPPES with the primary taxonomy of Occupational Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-22.