Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

WAI YEE FIONA DE KOSTER LMSW
NPI 1285538918
Social Worker - Clinical in Orange City, IA

Q: What is Wai Yee Fiona De Koster's NPI number?

The NPI number for Wai Yee Fiona De Koster is 1285538918. It was assigned to this individual provider in the NPPES registry on October 6, 2026.

Q: What is Wai Yee Fiona De Koster's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Active since October 06, 2026

1217 HIGHWAY 10 W, ORANGE CITY, IA 51041(712) 707-9222(712) 707-9220 Get Directions Write a Review

NPPES record added: October 6, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

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About Wai Yee Fiona De Koster Lmsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WAI YEE FIONA DE KOSTER LMSW (NPI 1285538918) is an individual clinical provider in Orange City, Iowa, licensed in Iowa (137489) and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1285538918

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameWAI YEE FIONA DE KOSTERCredential: LMSW

Location Address1217 HIGHWAY 10 WOrange City, IA 51041-1500

Mailing Address1217 Highway 10 WOrange City, IA 51041-1500 · (712) 707-9222 · Fax (712) 707-9220

Phone(712) 707-9222

Fax(712) 707-9220

Sole ProprietorNo

Enumeration DateOctober 6, 2026

NPPES CertifiedOctober 6, 2026

✔ NPI 1285538918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

License✔ Licensed in IA · 137489

Definition

A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

1217 HIGHWAY 10 W, Orange City, IA 51041

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Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BRIANNA OETKEN LMSW

Social Worker (Clinical)