Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John Herbert Hammer, DC

Chiropractor in Omak, WA · enumerated 2006.

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

National Provider Identifier

1154404572

Verified

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Registry record

Entity type Individual (Type 1)

Name John Herbert Hammer

Credential DC

Sex Male

Practice address Omak, WA, 98841

Phone (509) 826-2111

Fax (509) 826-1334

Enumeration date Oct 21, 2006

Last updated in NPPES May 29, 2014

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 3140 (WA) Primary

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
2020949	Medicaid	WA	—
911833133	Other	—	HMO
HA1266	Other	—	ASURIS NW HEALTH
114053	Other	WA	LABOR & INDUSTRIES
911833133	Other	—	COMMERCIAL
P00153320	Other	—	RAILROAD MEDICARE
911833133	Other	—	PPO
911833133	Other	—	BLUE CROSS BLUE SHIELD

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 John Hammer?

John Hammer is registered in NPPES with the primary taxonomy of Chiropractor. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-29.