Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William James Tjeerdsma

Individual provider Social Worker · NPI 1306604962

William James Tjeerdsma is a Social Worker in Sioux City, Iowa. Registered with an NPI since 2024.

In the registry since
2024

Practice location Address checks out

625 Court St
Sioux City, IA 51101-1919
Phone: (712) 252-3871
Fax: (877) 728-4419
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X

Record details

NPI number1306604962
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 8, 2024
Last updated in NPPESMarch 8, 2024
Certification dateMarch 8, 2024
Mailing address625 Court St, Sioux City, IA 51101-1919

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