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

John S Yamas, O.M.D., L.A.C.

Acupuncturist in Arcata, CA · enumerated 2010.

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

National Provider Identifier

1427369412

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Registry record

Entity type Individual (Type 1)

Name John S Yamas

Credential O.M.D., L.A.C.

Sex Male

Practice address Arcata, CA, 95521

Phone (707) 822-7400

Fax (707) 822-2338

Enumeration date Jun 24, 2010

Last updated in NPPES Jun 24, 2010

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License ACCL002834 (CA) Primary

LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC credential

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

How do I verify John Yamas's NPI record?

Cross-check NPI 1427369412 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1427369412 active?

Yes, as of the latest NPPES snapshot, NPI 1427369412 is active (record last updated 2010-06-24).

Other providers at this practice address

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Nathan Webb Acupuncturist · Arcata, CA NPI 1831592138

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-24.