Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dawn C Fossum, SOCIAL WORKER
Social Worker in Janesville, WI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831385335
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Registry record
Entity type Individual (Type 1)
Name Dawn C Fossum
Credential SOCIAL WORKER
Sex Female
Practice address 3530 N County Rd E # F, Janesville, WI, 53548
Phone (608) 758-8412
Enumeration date Sep 18, 2007
Last updated in NPPES Sep 18, 2007
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 8769-120 (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
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.
What specialty is Dawn Fossum?
Dawn Fossum 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.
Other providers at this practice address
Browse all → Stacy Farrington Clinical Social Worker · Janesville, WI NPI 1144415696 Tracey Bushaw Social Worker · Janesville, WI NPI 1043406648 Debra Guisleman Social Worker · Janesville, WI NPI 1508052069 Dennis Luster Professional Counselor · Janesville, WI NPI 1528254968 Michael Jones Social Worker · Janesville, WI NPI 1811183387
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-18.