Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Clarissa Sin, OD

Individual provider Optometrist · NPI 1619106903

Clarissa Sin, OD is an Optometrist in San Mateo, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2009
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

See every abbreviation used in this directory →

Practice location Address checks out

117 N San Mateo Dr Ste 2
San Mateo, CA 94401-2708
Phone: (650) 344-2555
Fax: (650) 344-1702
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 13768 (CA)

Record details

NPI number1619106903
Entity typeIndividual (Type 1)
GenderFemale
Credentials OD
Sole proprietorYes
NPI enumeratedJuly 7, 2009
Last updated in NPPESDecember 28, 2016
Mailing address2918 Sorrento Way, Suite 2, Union City, CA 94587-1532

Other providers in San Mateo