Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Chang Wei Chieu, D.C. L.AC

Chiropractor in Sunnyvale, CA · enumerated 2006.

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

National Provider Identifier

1013958412

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Registry record

Entity type Individual (Type 1)

Name Dr. Chang Wei Chieu

Credential D.C. L.AC

Sex Male

Practice address 1288 Kifer Rd Ste 210, Sunnyvale, CA, 94086

Phone (408) 749-1232

Fax (408) 749-1002

Enumeration date Jun 9, 2006

Last updated in NPPES Jan 27, 2014

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License DC29344 (CA) Primary

171100000X Acupuncturist Other Service Providers · License AC10702 (CA) Secondary

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

How do I verify Chang Chieu's NPI record?

Cross-check NPI 1013958412 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1013958412 active?

Yes, as of the latest NPPES snapshot, NPI 1013958412 is active (record last updated 2014-01-27).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-27.