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

Mr. William Duane Harrington, DC

Chiropractor in Sunnyside, WA · enumerated 2005 · practices at Yakima Valley Chiropractic Center Ps.

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

National Provider Identifier

1437143120

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. William Duane Harrington

Credential DC

Sex Male

Practice address Sunnyside, WA, 98944

Phone (509) 837-2600

Fax (509) 837-2291

Enumeration date Sep 8, 2005

Last updated in NPPES Oct 28, 2015

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License CH00003133 (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
350041589	Other	-	RAILROAD MEDICARE
HA3133	Other	WA	REGENCE
2925245	Medicaid	WA	-
195894	Other	WA	I & T
8921562	Other	-	CRIME VICTOMS COMP PROGRA

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for William Harrington?

The National Provider Identifier (NPI) for William Harrington is 1437143120, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Harrington practice?

The practice location on file with NPPES is in Sunnyside, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Yakima Valley Chiropractic Center Ps Chiropractor · Sunnyside, WA NPI 1942294871 Diane Affholter Massage Therapist · Sunnyside, WA NPI 1366419749

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-28.