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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Diane Linda Thiel, MSW

Clinical Social Worker in Freeland, WA · enumerated 2006.

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

National Provider Identifier

1033227129

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Registry record

Entity type Individual (Type 1)
Name Ms. Diane Linda Thiel
Credential MSW
Sex Female
Practice address 5492 S Harbor Ave, Freeland, WA, 98249
Phone (808) 385-2712
Enumeration date Aug 28, 2006
Last updated in NPPES Aug 8, 2024

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LW 00009536 (WA) Primary

Other identifiers

Identifier Type State Issuer
LSW228 Other HI LICENSE IN SOCIAL WORK
RC00055130 Other WA REGISTERED COUNSELOR

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 does Diane Thiel practice?
The practice location on file with NPPES is in Freeland, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Thiel?
The National Provider Identifier (NPI) for Diane Thiel is 1033227129, a Type 1 (individual) record in the CMS NPPES registry.

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