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

Alexander Gau, DO

Emergency Medicine Physician in Moreno Valley, CA · enumerated 2021.

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

National Provider Identifier

1801478540

Verified

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Registry record

Entity type Individual (Type 1)

Name Alexander Gau

Credential DO

Sex Male

Practice address Moreno Valley, CA, 92555

Phone (951) 486-5914

Enumeration date Apr 22, 2021

Last updated in NPPES Jul 19, 2024

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

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 20667 (CA) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 20A20667 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Alexander Gau?

The National Provider Identifier (NPI) for Alexander Gau is 1801478540, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alexander Gau practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-19.