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

Dr. Susan S.Q. Au-Yang, D.C.

Chiropractor in Mill Valley, CA · enumerated 2007.

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

National Provider Identifier

1073704045

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. Susan S.Q. Au-Yang

Credential D.C.

Sex Female

Practice address Mill Valley, CA, 94941

Phone (415) 898-2266

Enumeration date Aug 6, 2007

Last updated in NPPES Dec 9, 2011

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 162470 (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

Where does Susan Au-Yang practice?

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

What is the NPI number for Susan Au-Yang?

The National Provider Identifier (NPI) for Susan Au-Yang is 1073704045, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-09.