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

Susan Pi-Shian Hsu, OD

Optometrist in Pacifica, CA · enumerated 2005.

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

National Provider Identifier

1164403556

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Registry record

Entity type Individual (Type 1)

Name Susan Pi-Shian Hsu

Credential OD

Sex Female

Practice address Pacifica, CA, 94044

Phone (650) 359-2231

Fax (650) 359-2305

Enumeration date Nov 11, 2005

Last updated in NPPES Jun 9, 2010

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 8365TPA (CA) Primary

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
BG279Z	Other	CA	MEDICARE PTAN

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.

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Frequently asked questions

How do I verify Susan Hsu's NPI record?

Cross-check NPI 1164403556 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164403556 active?

Yes, as of the latest NPPES snapshot, NPI 1164403556 is active (record last updated 2010-06-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-09.