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Mountainside Psychiatric Services

Preferred Provider Organization in Lakewood, WA · enumerated 2006 · authorized official Kathleen Potter, Owner/Operator.

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

National Provider Identifier

1518979434

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Registry record

Entity type Organization (Type 2)
Legal business name Mountainside Psychiatric Services
Practice address 10209 Bridgeport Way Sw, Suite D 10, Lakewood, WA, 98499
Phone (253) 460-9414
Fax (253) 460-0999
Enumeration date Aug 12, 2006
Last updated in NPPES Aug 25, 2008

Taxonomy & classification

305R00000X Preferred Provider Organization Managed Care Organizations Primary

Authorized official

Name Kathleen Potter
Title Owner/Operator
Phone (253) 460-9414

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.

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Frequently asked questions

Where is Mountainside Psychiatric Services located?
The practice location on file with NPPES is in Lakewood, WA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-08-25. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-25.