Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Kathleen Anne Siu, DMD
Pediatric Dentistry in Valencia, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700961919
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Registry record
Entity type Individual (Type 1)
Name Kathleen Anne Siu
Credential DMD
Sex Female
Practice address 23838 West Valencia Blvd, Suite 300, Valencia, CA, 91355
Phone (661) 259-2960
Fax (661) 259-5983
Enumeration date Oct 26, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1700961919 active?
Yes, as of the latest NPPES snapshot, NPI 1700961919 is active (record last updated 2007-07-08).
How do I verify Kathleen Siu's NPI record?
Cross-check NPI 1700961919 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.