Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David William Katz, PH.D.

Psychologist in Lake Oswego, OR · enumerated 2006.

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

National Provider Identifier

1720051980

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Registry record

Entity type Individual (Type 1)

Name Dr. David William Katz

Credential PH.D.

Sex Male

Practice address 4550 Kruse Way, Suite 225, Lake Oswego, OR, 97035

Phone (503) 803-1390

Enumeration date Feb 8, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 0732 (OR) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 0732 (OR) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is David Katz?

David Katz is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.