DR. SIEN KWA SIAO DDS
NPI 1841318706
Dentist - General Practice in Brentwood, CA

Q: What is Sien Siao's NPI number?

The NPI number for Sien Siao is 1841318706. It was assigned to this individual provider in the NPPES registry on March 27, 2007.

Q: What is Sien Siao's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for Sien Siao 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.

Active since March 27, 2007

3120 BALFOUR RD, SUITE D, BRENTWOOD, CA 94513(925) 634-9901(925) 634-1352 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Sien Kwa Siao Dds NPPES

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

DR. SIEN KWA SIAO DDS (NPI 1841318706) is an individual general practice provider in Brentwood, California, licensed in California (43858) and active in the NPI registry since March 2007.

NPPES Registry Identity

NPI1841318706

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. SIEN KWA SIAOCredential: DDS

Location Address3120 BALFOUR RD, SUITE DBrentwood, CA 94513-5513

Mailing Address3120 Balfour Rd, Suite DBrentwood, CA 94513-5513 · (925) 634-9901 · Fax (925) 634-1352

Phone(925) 634-9901

Fax(925) 634-1352

Sole ProprietorNo

Enumeration DateMarch 27, 2007

Last NPPES UpdateJuly 8, 2007

✔ NPI 1841318706 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in CA · 43858

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

3120 BALFOUR RD, Brentwood, CA 94513

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BEST Life, HRI Dental & Vision, Humana and more.Insurance ›

Other Providers at the Same Location NPPES

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

DIMPLE RAYANI DMD

Dentist (General Practice)

3120 BALFOUR RD, SUITE D
BRENTWOOD, CA 94513

Contra Costa County (925) 634-9901

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 Sien Siao's NPI number?

The NPI number for Sien Siao is 1841318706. It was assigned to this individual provider in the NPPES registry on March 27, 2007.

Where is Sien Siao located?

Sien Siao practices at 3120 Balfour Rd Suite D, Brentwood, CA 94513. The listed phone number is (925) 634-9901.

What is Sien Siao's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

What insurance does Sien Siao accept?

Health plans from BEST Life, HRI Dental & Vision, Humana, Paramount and Renaissance Dental list Sien Siao 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 Sien Siao 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.