Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Pei-Shan Hsieh, O.D.

Optometrist in Windsor, CA · enumerated 2007.

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

National Provider Identifier

1023208071

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Registry record

Entity type Individual (Type 1)

Name Dr. Pei-Shan Hsieh

Credential O.D.

Sex Female

Practice address 6650 Hembree Ln, Windsor, CA, 95492

Phone (707) 838-0397

Fax (707) 838-0188

Enumeration date Jul 26, 2007

Last updated in NPPES Jul 26, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT13353 (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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Pei-Shan Hsieh?

Pei-Shan Hsieh is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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National Vision, Inc. Eyewear Supplier · Windsor, CA NPI 1457306482 Walmart Inc. Community/Retail Pharmacy · Windsor, CA NPI 1871510289 Jaime Hatanaka Optometrist · Windsor, CA NPI 1578645719 Firstsight Vision Services, Inc. Optometrist · Windsor, CA NPI 1003096389 Sung Seo Pharmacist · Windsor, CA NPI 1881107555 Rosemary Mutunga Pharmacist · Windsor, CA NPI 1629557749 Kaishan Ding Pharmacist · Windsor, CA NPI 1285100578 Christy Chan Pharmacist · Windsor, CA NPI 1679219398

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-26.