Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen Hsu

Physical Therapist in Ventura, CA · enumerated 2021.

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

National Provider Identifier

1699353227

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Registry record

Entity type Individual (Type 1)

Name Stephen Hsu

Sex Male

Practice address 4572 Telephone Rd Ste 903, Ventura, CA, 93003

Phone (805) 654-8127

Enumeration date Apr 2, 2021

Last updated in NPPES Apr 2, 2021

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 299814 (CA) Primary

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 Stephen Hsu?

Stephen Hsu is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-02.