OrganizationActive
Clarissa Sin OD, Inc
NPI 1073974366 · Optometrist · San Mateo, CA
Clarissa Sin OD, Inc is a Optometrist organization in San Mateo, CA (NPI 1073974366).
Provider details
- NPI number
- 1073974366
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Parent organization
- Clarissa Sin OD, Inc
- Organization subpart
- Yes
- Authorized official
- Clarissa Sin, Ceo/Optometrist(510) 896-9982
- License
- 13768 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
Established profile(73/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
117 N San Mateo Dr
Suite 2
San Mateo, CA 94401-2708
Phone: (650) 344-2555
Street-level locationGet directions
Mailing address
2918 Sorrento Way
Union City, CA 94587-1532
Other names (DBA / former)
- Doing business as
- Drs in Optometry
Registry dates
- Enumerated
- 2016-03-14
- Last updated
- 2016-03-17
Frequently asked questions
- What is Clarissa Sin OD, Inc's NPI number?
- Clarissa Sin OD, Inc's National Provider Identifier (NPI) is 1073974366, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Clarissa Sin OD, Inc?
- Clarissa Sin OD, Inc is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Clarissa Sin OD, Inc located?
- Clarissa Sin OD, Inc's practice location on file with NPPES is 117 N San Mateo Dr, San Mateo, CA 94401-2708.
- What is Clarissa Sin OD, Inc's phone number?
- The practice phone number listed in the NPPES registry for Clarissa Sin OD, Inc is (650) 344-2555.
- Who is the authorized official for Clarissa Sin OD, Inc?
- The authorized official listed on Clarissa Sin OD, Inc's NPPES record is Clarissa Sin, Ceo/Optometrist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Clarissa Sin OD, Inc's NPI active?
- Yes — Clarissa Sin OD, Inc's NPI (1073974366) is active in the NPPES registry as of the last update on 2016-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.