NPI Portal NPI Lookup & Verification

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

Michael Hsieh, OD

Optometrist in Palmdale, CA · enumerated 2017.

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

National Provider Identifier

1013430859

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Michael Hsieh
Credential OD
Sex Male
Practice address Palmdale, CA, 93552
Phone (214) 471-0621
Enumeration date Jul 24, 2017
Last updated in NPPES Aug 11, 2017

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 33737 (CA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

Is NPI 1013430859 active?
Yes, as of the latest NPPES snapshot, NPI 1013430859 is active (record last updated 2017-08-11).
How do I verify Michael Hsieh's NPI record?
Cross-check NPI 1013430859 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-11.