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Clarissa Sin Od, Inc

Optometrist in San Mateo, CA · enumerated 2016 · authorized official Clarissa Sin, Ceo/Optometrist.

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

National Provider Identifier

1073974366

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Registry record

Entity type Organization (Type 2)
Legal business name Clarissa Sin Od, Inc
Other name <Unavail>
Parent organization Clarissa Sin Od, Inc
Practice address 117 N San Mateo Dr, Suite 2, San Mateo, CA, 94401
Phone (650) 344-2555
Enumeration date Mar 14, 2016
Last updated in NPPES Mar 17, 2016

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 13768 (CA) Primary

Authorized official

Name Clarissa Sin
Title Ceo/Optometrist
Phone (510) 896-9982

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 the NPI number for Clarissa Sin Od, Inc?
The NPI for Clarissa Sin Od, Inc is 1073974366, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Clarissa Sin Od, Inc?
NPPES lists Clarissa Sin (Ceo/Optometrist) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-17.