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Sienne S. Van Enk

Optometrist in Harbor City, CA · enumerated 2007 · authorized official Sienne Van Enk, Owner-Optometrist.

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

National Provider Identifier

1578620274

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Registry record

Entity type Organization (Type 2)
Legal business name Sienne S. Van Enk
Other name <Unavail>
Practice address 26640 Western Ave, Suite R, Harbor City, CA, 90710
Phone (310) 325-7855
Fax (310) 325-7955
Enumeration date Jan 2, 2007
Last updated in NPPES Jul 10, 2009

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 10560T (CA) Primary

Authorized official

Name Sienne Van Enk
Title Owner-Optometrist
Phone (310) 325-7855

Other identifiers

Identifier Type State Issuer
SD0105600 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.

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Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Sienne S. Van Enk?
Sienne S. Van Enk is registered in NPPES as a Optometrist (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-10.