NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dawn J Williamson Lcsw LLC

Clinical Social Worker in Dundee, OR · enumerated 2020 · authorized official Debra Jushae-Sieber, Billing.

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

National Provider Identifier

1447890108

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Dawn J Williamson Lcsw LLC
Practice address 211 Sw 7th St, Dundee, OR, 97115
Enumeration date Jan 10, 2020
Last updated in NPPES Feb 28, 2020

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

Authorized official

Name Debra Jushae-Sieber
Title Billing

Other identifiers

Identifier Type State Issuer
105216 Medicaid OR -

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 Dawn J Williamson Lcsw LLC?
The NPI for Dawn J Williamson Lcsw LLC is 1447890108, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Dawn J Williamson Lcsw LLC?
NPPES lists Debra Jushae-Sieber (Billing) 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 2020-02-28.