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Mathias Rivers

Chiropractor in Sedro Woolley, WA · enumerated 2016 · practices at Health First Chiropractic Inc Ps.

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

National Provider Identifier

1144677170

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Registry record

Entity type Individual (Type 1)
Name Mathias Rivers
Sex Male
Practice address 700 Murdock St, Suite B, Sedro Woolley, WA, 98284
Phone (360) 855-1021
Enumeration date May 19, 2016
Last updated in NPPES May 10, 2017

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 38MC00745200 (NJ) Primary

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 Mathias Rivers?
Mathias Rivers 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-10.