Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Slate Family Services, LLC

Developmentally Disabled Services Day Training Agency in Yelm, WA · enumerated 2026 · authorized official Marie Fierro, Owner & Chief Executive Officer (Ce.

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

National Provider Identifier

1659297935

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Registry record

Entity type Organization (Type 2)

Legal business name Slate Family Services, LLC

Practice address 508 2nd St Se, Yelm, WA, 98597

Phone (360) 919-4744

Fax (506) 901-4991

Enumeration date Jun 29, 2026

Last updated in NPPES Jun 29, 2026

Taxonomy & classification

251C00000X Developmentally Disabled Services Day Training Agency Agencies Primary

Authorized official

Name Marie Fierro

Title Owner & Chief Executive Officer (Ce

Phone (360) 464-8656

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-06-29. Verify at npiregistry.cms.hhs.gov.

Where is Slate Family Services, LLC located?

The practice location on file with NPPES is in Yelm, WA.

Providers at this address

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Marie Fierro Student in an Organized Health Care Education/Training Program · Yelm, WA NPI 1912459199 Slate Family Services, LLC Day Training/Habilitation Specialist · Yelm, WA NPI 1134009376 Slate Family Services Foundations Community/Behavioral Health Agency · Yelm, WA NPI 1013833300

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-29.