Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Nathan Hung Au, OD
Optometrist in Torrance, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629051750
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Registry record
Entity type Individual (Type 1)
Name Dr. Nathan Hung Au
Credential OD
Sex Male
Practice address 2396 Crenshaw Blvd Ste C, Torrance, CA, 90501
Phone (310) 320-0081
Fax (310) 320-0082
Enumeration date Nov 22, 2005
Last updated in NPPES Dec 6, 2019
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2349441 | Medicaid | CA | - |
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.
Frequently asked questions
What is the NPI number for Nathan Au?
The National Provider Identifier (NPI) for Nathan Au is 1629051750, a Type 1 (individual) record in the CMS NPPES registry.
Where does Nathan Au practice?
The practice location on file with NPPES is in Torrance, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-06.