NPI Portal NPI Lookup & Verification

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

Andrew W Langdon, PSY.D.

Clinical Child & Adolescent Psychologist in Folsom, CA · enumerated 2010 · practices at Kaiser Foundation Health Plan Inc.

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

National Provider Identifier

1053637967

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Registry record

Entity type Individual (Type 1)
Name Andrew W Langdon
Credential PSY.D.
Sex Male
Practice address Folsom, CA, 95630
Phone (916) 817-5636
Fax (916) 817-5625
Enumeration date Apr 16, 2010
Last updated in NPPES Jan 18, 2022

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

Taxonomy & licenses

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License PSY26937 (CA) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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

Is NPI 1053637967 active?
Yes, as of the latest NPPES snapshot, NPI 1053637967 is active (record last updated 2022-01-18).
How do I verify Andrew Langdon's NPI record?
Cross-check NPI 1053637967 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-18.