Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peter Stewart, PH.D.

Counselor in Richland, WA · enumerated 2006.

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

National Provider Identifier

1255356739

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Registry record

Entity type Individual (Type 1)

Name Peter Stewart

Credential PH.D.

Sex Male

Practice address 750 George Washington Way, Suite 7, Richland, WA, 99352

Phone (509) 946-5515

Fax (509) 946-8519

Enumeration date Jul 13, 2006

Last updated in NPPES Jan 8, 2009

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License RC60034664 (WA) 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

Is NPI 1255356739 active?

Yes, as of the latest NPPES snapshot, NPI 1255356739 is active (record last updated 2009-01-08).

How do I verify Peter Stewart's NPI record?

Cross-check NPI 1255356739 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 2009-01-08.