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

Dr. Timothy J Yates, D.C.

Chiropractor in Napa, CA · enumerated 2007.

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

National Provider Identifier

1225166846

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Registry record

Entity type Individual (Type 1)

Name Dr. Timothy J Yates

Credential D.C.

Sex Male

Practice address Napa, CA, 94558

Phone (707) 224-8600

Fax (707) 244-4331

Enumeration date Mar 2, 2007

Last updated in NPPES Jan 14, 2014

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 016955 (CA) Primary

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

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Timothy Yates?

The National Provider Identifier (NPI) for Timothy Yates is 1225166846, a Type 1 (individual) record in the CMS NPPES registry.

Where does Timothy Yates practice?

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

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Craig Maurer Chiropractor · Napa, CA NPI 1053559989

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-14.