IndividualActive
William Tjeerdsma
NPI 1306604962 · Social Worker · Sioux City, IA
William Tjeerdsma is a Social Worker provider in Sioux City, IA (NPI 1306604962).
Provider details
- NPI number
- 1306604962
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(50/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
625 Court St
Sioux City, IA 51101-1919
Phone: (712) 252-3871
Fax: (877) 728-4419
Street-level locationGet directions
Mailing address
625 Court St
Sioux City, IA 51101-1919
Registry dates
- Enumerated
- 2024-03-08
- Last updated
- 2024-03-08
- Certified
- 2024-03-08
Frequently asked questions
- What is William Tjeerdsma's NPI number?
- William Tjeerdsma's National Provider Identifier (NPI) is 1306604962, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Tjeerdsma's specialty?
- William Tjeerdsma is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is William Tjeerdsma located?
- William Tjeerdsma's practice location on file with NPPES is 625 Court St, Sioux City, IA 51101-1919.
- What is William Tjeerdsma's phone number?
- The practice phone number listed in the NPPES registry for William Tjeerdsma is (712) 252-3871.
- Is William Tjeerdsma's NPI active?
- Yes — William Tjeerdsma's NPI (1306604962) is active in the NPPES registry as of the last update on 2024-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.