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DR. CESAR ENRIQUE SIU O.D.
NPI 1699821967
Optometrist in Union City, CA

Active since January 26, 2007
33800 ALVARADO NILES RD, 3, UNION CITY, CA 94587(510) 487-5856(510) 487-3772 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Cesar Enrique Siu O.d. NPPES

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

DR. CESAR ENRIQUE SIU O.D. (NPI 1699821967) is an individual optometrist in Union City, California, licensed in California (8860T) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1699821967
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. CESAR ENRIQUE SIUCredential: O.D.
Location Address33800 ALVARADO NILES RD, 3Union City, CA 94587-4359
Mailing Address5923 Remer TerFremont, CA 94555-3631 · (510) 796-1990
Phone(510) 487-5856
Fax(510) 487-3772
Sole ProprietorYes
Enumeration DateJanuary 26, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1699821967 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 · 8860T
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.
33800 ALVARADO NILES RD, Union City, CA 94587
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Other Identifiers 2

Medicare ID-Type UnspecifiedSD0088600CA
MedicaidSD0088600CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.Insurance ›

Other Providers at the Same Location NPPES 2

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

LEONARD S. CHONG, D.D.S., INC.
Dentist (Orthodontics and Dentofacial Orthopedics)
33800 ALVARADO NILES RD, SUITE 1
UNION CITY, CA 94587
Alameda County (510) 489-5671
DR. LEON H. CHANG D.D.S.
Dentist (General Practice)
33800 ALVARADO NILES RD, SUITE 6
UNION CITY, CA 94587
Alameda County (510) 489-4660

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 Cesar Siu's NPI number?

The NPI number for Cesar Siu is 1699821967. It was assigned to this individual provider in the NPPES registry on January 26, 2007.

Where is Cesar Siu located?

Cesar Siu practices at 33800 Alvarado Niles Rd 3, Union City, CA 94587. The listed phone number is (510) 487-5856.

What is Cesar Siu's specialty?

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

What insurance does Cesar Siu accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas, BlueCross BlueShield of Tennessee and Providence Health Plan list Cesar Siu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Cesar Siu was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.