Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Kaj U Anderson, SW
Social Worker in Janesville, WI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1093996464
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Registry record
Entity type Individual (Type 1)
Name Kaj U Anderson
Credential SW
Sex Male
Practice address 35 S Main St, Janesville, WI, 53545
Phone (608) 757-5566
Enumeration date Nov 14, 2007
Last updated in NPPES Nov 14, 2007
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 5971-120 (WI) 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.
Frequently asked questions
What specialty is Kaj Anderson?
Kaj Anderson is registered in NPPES with the primary taxonomy of Social Worker. 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.
Other providers at this practice address
Browse all → Deb Arter Psychiatry Physician · Janesville, WI NPI 1730200619 Brenda Lewis Social Worker · Janesville, WI NPI 1255510517 Sheryl Gensler Registered Nurse · Janesville, WI NPI 1548449820 Peter Johnson Social Worker · Janesville, WI NPI 1750561908 Nancy Story Social Worker · Janesville, WI NPI 1134309925 Nadine Westby Social Worker · Janesville, WI NPI 1497935100 Jill Housker Social Worker · Janesville, WI NPI 1720269103 Virgil Parker Registered Nurse · Janesville, WI NPI 1275714578
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-14.