Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Washington Mental Health Services

Q: What is the NPI number for Washington Mental Health Services?

The NPI for Washington Mental Health Services is 1528891561, a Type 2 (organization) record in the CMS NPPES registry.

Mental Health Counselor in Black Diamond, WA · enumerated 2024 · authorized official Sandra Martinez, Owner / Member.

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

National Provider Identifier

1528891561

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Registry record

Entity type Organization (Type 2)

Legal business name Washington Mental Health Services

Practice address 33169 Crystal Ave Se, Black Diamond, WA, 98010

Phone (206) 359-1755

Enumeration date Aug 23, 2024

Last updated in NPPES Aug 23, 2024

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Sandra Martinez

Title Owner / Member

Phone (206) 359-1755

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

Who is the authorized official for Washington Mental Health Services?

NPPES lists Sandra Martinez (Owner / Member) as the authorized official for this organization.

What is the NPI number for Washington Mental Health Services?

The NPI for Washington Mental Health Services is 1528891561, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-23.