NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Helen Louise Thomson, MFT

Marriage & Family Therapist in Santa Rosa, CA · enumerated 2006 · practices at Golden State Performance and Family Counseling Inc.

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

National Provider Identifier

1649338146

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Registry record

Entity type Individual (Type 1)
Name Ms. Helen Louise Thomson
Credential MFT
Sex Female
Practice address Santa Rosa, CA, 95404
Phone (707) 579-5342
Enumeration date Dec 5, 2006
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC 21435 (CA) Primary

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

What specialty is Helen Thomson?
Helen Thomson is registered in NPPES with the primary taxonomy of Marriage & Family Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.