Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William J Affeldt, MSSW LICSW
Clinical Social Worker in Walker, MN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1013950203
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 110573C851 | Other | - | UCARE |
| 6248959 | Other | - | MEDICA |
| 970757300 | Medicaid | MN | - |
| HP27808 | Other | - | HEALTH PARTNERS |
| 922241007835 | Other | - | PREFERRED ONE |
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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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-27.