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Thao Nguyen Sieben, SLP

Speech-Language Pathologist in San Jose, CA · enumerated 2018 · practices at Keys To Communication Speech Pathology Corp.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1780156430

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Registry record

Entity type Individual (Type 1)
Name Thao Nguyen Sieben
Credential SLP
Sex Female
Practice address 2020 Forest Ave Ste 7, San Jose, CA, 95128
Phone (408) 982-3340
Enumeration date Dec 19, 2018
Last updated in NPPES Jun 16, 2022

Taxonomy & licenses

106S00000X Behavior Technician Behavioral Health & Social Service Providers Secondary
235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers Primary
SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP 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.

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Frequently asked questions

How do I verify Thao Sieben's NPI record?
Cross-check NPI 1780156430 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1780156430 active?
Yes, as of the latest NPPES snapshot, NPI 1780156430 is active (record last updated 2022-06-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-16.