NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Judith Simon, MSW, PHD

Clinical Social Worker in Los Altos, CA · enumerated 2016.

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

National Provider Identifier

1013363142

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Registry record

Entity type Individual (Type 1)
Name Dr. Judith Simon
Credential MSW, PHD
Sex Female
Practice address Los Altos, CA, 94022
Phone (665) 948-2126
Fax (650) 948-2953
Enumeration date May 7, 2016
Last updated in NPPES May 7, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCS3843 (CA) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 Judith Simon's NPI record?
Cross-check NPI 1013363142 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1013363142 active?
Yes, as of the latest NPPES snapshot, NPI 1013363142 is active (record last updated 2016-05-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-07.