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JOHN SIC-YIU LIU
NPI 1114949419
Optometrist in Castro Valley, CA

Active since July 24, 2006
3550 CASTRO VALLEY BLVD, CASTRO VALLEY, CA 94546(510) 581-1680(510) 581-5070 Get Directions Write a Review

NPPES record last updated: June 16, 2009. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About John Sic-yiu Liu NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN SIC-YIU LIU (NPI 1114949419) is an individual optometrist in Castro Valley, California, licensed in California (6498T) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1114949419
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameJOHN SIC-YIU LIU
Location Address3550 CASTRO VALLEY BLVDCastro Valley, CA 94546-4402
Mailing Address3550 Castro Valley BlvdCastro Valley, CA 94546-4402
Phone(510) 581-1680
Fax(510) 581-5070
Sole ProprietorYes
Enumeration DateJuly 24, 2006
Last NPPES UpdateJune 16, 2009
✔ NPI 1114949419 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in CA · 6498T
Definition
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 education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
3550 CASTRO VALLEY BLVD, Castro Valley, CA 94546
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Other Identifiers 4

Medicare PINSD0064980
Medicare NSC2309650001
OtherP00036039Medicare R/r
MedicaidSD0064980CA

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EYEBRIGHT OPTOMETRY
Optometrist
3550 CASTRO VALLEY BLVD
CASTRO VALLEY, CA 94546
Alameda County (510) 581-1680
MARY NGUYEN O.D.
Optometrist
3550 CASTRO VALLEY BLVD
CASTRO VALLEY, CA 94546
Alameda County (510) 581-1680
KAIYUN KATHLEEN MAI O.D.
Optometrist
3550 CASTRO VALLEY BLVD
CASTRO VALLEY, CA 94546
Alameda County (510) 581-1680
KATHLEEN MAI, O.D., OPTOMETRY CORP
Optometrist
3550 CASTRO VALLEY BLVD
CASTRO VALLEY, CA 94546
Alameda County (510) 581-1680

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Liu's NPI number?

The NPI number for John Liu is 1114949419. It was assigned to this individual provider in the NPPES registry on July 24, 2006.

Where is John Liu located?

John Liu practices at 3550 Castro Valley Blvd, Castro Valley, CA 94546. The listed phone number is (510) 581-1680.

What is John Liu's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

When was this NPI record last updated?

The NPPES record for John Liu was last updated on June 16, 2009. NPI Profile syncs with the weekly NPPES data releases published by CMS.