Organization · Type 2 NPI

William Y. To, O.d., Inc

Optometrist · San Mateo, CA

NPI number 1700448925 Active

Practice location

194 Hillsdale Shopping Center
San Mateo, CA 94403-3409

Call (650) 341-8080 Map

Fax (650) 341-8565

Mailing address

1750 Lundy Ave Unit 612899
San Jose, CA 95161-7117

Other practice locations

9309 Glacier Hwy Ste A103, Juneau, AK 99801-9300 · (907) 789-3175
6000 Bollinger Canyon Rd Ste 1104, San Ramon, CA 94583-2305 · (925) 725-1745
377 Santana Row Ste 1115, San Jose, CA 95128-2058 · (408) 502-5020

Specialties and licenses

Taxonomy	Code	License
Optometrist Primary	152W00000X	None listed

Optometrist: Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional e…

3 other providers at this address

Other optometrist providers in San Mateo

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NPI record

NPI: 1700448925
Entity type: Organization (Type 2)
Issued: Jul 8, 2019
Last updated: Sep 3, 2025
Status: Active

Other names

<unavail>
Lifetime Eyecare By Optical Illusions · doing business as
Optical Illusions of San Jose: An Optometric Practice · doing business as
Optical Illusions of San Mateo: An Optometric Practice · doing business as
Optical Illusions of San Mateo: An Optometric Practice · doing business as
Optical Illusions of San Ramon: An Optometric Practice · doing business as
Optical Illusions: An Optometric Practice · doing business as

Authorized official

Katalina Ashe Rowland Yandell, OD
Chief Operations Officer
(425) 445-6120

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About NPI 1700448925

William Y. To, O.d., Inc's National Provider Identifier is 1700448925, issued on Jul 8, 2019. The primary taxonomy on file is Optometrist (152W00000X), and the practice location is in San Mateo, CA. The record was last updated on Sep 3, 2025.