Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory F Kleiner, MSW

Social Worker in Renton, WA · enumerated 2021 · practices at Consejo Counseling and Referral Services.

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

National Provider Identifier

1841959988

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Registry record

Entity type Individual (Type 1)

Name Gregory F Kleiner

Credential MSW

Sex Male

Practice address 723 Sw 10th St, Renton, WA, 98057

Phone (253) 732-1868

Enumeration date Dec 16, 2021

Last updated in NPPES Dec 16, 2021

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers Primary

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

How do I verify Gregory Kleiner's NPI record?

Cross-check NPI 1841959988 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1841959988 active?

Yes, as of the latest NPPES snapshot, NPI 1841959988 is active (record last updated 2021-12-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-16.