NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Eastside Social Skills Therapy LLC

Preferred Provider Organization in Issaquah, WA · enumerated 2015 · authorized official Penny Lathum, Owner.

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

National Provider Identifier

1659765816

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Eastside Social Skills Therapy LLC
Practice address 5436 232nd Ave Se, Issaquah, WA, 98029
Phone (206) 380-3009
Enumeration date Mar 26, 2015
Last updated in NPPES Mar 26, 2015

Taxonomy & classification

305R00000X Preferred Provider Organization Managed Care Organizations Primary

Authorized official

Name Penny Lathum
Title Owner
Phone (206) 380-3009

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

What is the NPI number for Eastside Social Skills Therapy LLC?
The NPI for Eastside Social Skills Therapy LLC is 1659765816, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Eastside Social Skills Therapy LLC?
NPPES lists Penny Lathum (Owner) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-26.