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

Dr. Douglas Christian Nies, PH.D.

Clinical Psychologist in Glendale, CA · enumerated 2007.

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

National Provider Identifier

1609091859

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Registry record

Entity type Individual (Type 1)

Name Dr. Douglas Christian Nies

Credential PH.D.

Sex Male

Practice address Glendale, CA, 91203

Phone (818) 240-7454

Enumeration date Apr 14, 2007

Last updated in NPPES May 16, 2024

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY 8297 (CA) Primary

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License PSY 8297 (CA) Secondary

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

Is NPI 1609091859 active?

Yes, as of the latest NPPES snapshot, NPI 1609091859 is active (record last updated 2024-05-16).

How do I verify Douglas Nies's NPI record?

Cross-check NPI 1609091859 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 2024-05-16.