Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison H Zarkos, MA

Audiologist in Seattle, WA · enumerated 2007.

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

National Provider Identifier

1447398557

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Registry record

Entity type Individual (Type 1)

Name Allison H Zarkos

Credential MA

Sex Female

Practice address 1100 9th Ave, Seattle, WA, 98101

Phone (206) 223-6600

Enumeration date Feb 1, 2007

Last updated in NPPES Apr 8, 2008

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License LD00003882 (WA) Primary

Other identifiers

Identifier	Type	State	Issuer
0186ZA	Other	WA	BLUE SHIELD#
8423386	Medicaid	WA	-
US7025661	Other	WA	AETNA SPECIALIST PIN
P00216708	Other	WA	RAILROAD MEDICARE
0039572	Other	WA	LABOR AND 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

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 Allison Zarkos?

Allison Zarkos is registered in NPPES with the primary taxonomy of Audiologist. 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 2008-04-08.