Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Willemijn Johanna Campbell, M.S.
Behavior Analyst in Lomita, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1134327638
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Registry record
Entity type Individual (Type 1)
Name Mrs. Willemijn Johanna Campbell
Credential M.S.
Sex Female
Practice address 25124 Narbonne Ave Ste 10290, Lomita, CA, 90717
Phone (882) 868-7158
Fax (888) 286-8715
Enumeration date Jul 5, 2007
Last updated in NPPES May 27, 2025
Taxonomy & licenses
103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-12-12499 (CA) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| W0101543 | Other | CA | MEDICAL |
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.
Frequently asked questions
What specialty is Willemijn Campbell?
Willemijn Campbell is registered in NPPES with the primary taxonomy of Behavior Analyst. 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-27.