WILLIAM P. KOOISTRA PH.D.
NPI 1508040627
Psychologist - Clinical in Grand Haven, MI

Q: What is William Kooistra's NPI number?

The NPI number for William Kooistra is 1508040627. It was assigned to this individual provider in the NPPES registry on December 26, 2007.

Q: What is William Kooistra's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for William Kooistra was last updated on December 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since December 26, 2007

41 WASHINGTON AVE, STE 365, GRAND HAVEN, MI 49417(616) 399-9911 Get Directions Write a Review

NPPES record last updated: December 23, 2016. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About William P. Kooistra Ph.d. NPPES

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

WILLIAM P. KOOISTRA PH.D. (NPI 1508040627) is an individual clinical provider in Grand Haven, Michigan, licensed in Michigan (6301007943) and active in the NPI registry since December 2007.

NPPES Registry Identity

NPI1508040627

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameWILLIAM P. KOOISTRACredential: PH.D.

Location Address41 WASHINGTON AVE, STE 365Grand Haven, MI 49417-3304

Mailing Address41 Washington Ave, Ste 365Grand Haven, MI 49417-3304 · (616) 638-7557

Phone(616) 399-9911

Sole ProprietorYes

Enumeration DateDecember 26, 2007

Last NPPES UpdateDecember 23, 2016

✔ NPI 1508040627 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in MI · 6301007943

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

41 WASHINGTON AVE, Grand Haven, MI 49417

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Other Providers at the Same Location NPPES 12

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

JULIE LOUISE HONEYCUTT LPC

Counselor (Professional)

41 WASHINGTON AVE, SUITE 306
GRAND HAVEN, MI 49417

Ottawa County (615) 587-3549

MS. JILL ELYCE YOUNG LMSW, ACSW

Social Worker (Clinical)

41 WASHINGTON AVE, 320
GRAND HAVEN, MI 49417

Ottawa County (616) 846-9144

HONEYCUTT COUNSELING

Counselor (Professional)

41 WASHINGTON AVE, SUITE 306
GRAND HAVEN, MI 49417

Ottawa County (615) 587-3549

MS. DIANE CHRISTY STRENG L.L.P.

Psychologist (Counseling)

41 WASHINGTON AVE, SUITE 370C
GRAND HAVEN, MI 49417

Ottawa County (616) 847-1530

DR. DAVID GLENN BEIGHLEY PH.D., MFT

Marriage & Family Therapist

41 WASHINGTON AVE
GRAND HAVEN, MI 49417

Ottawa County (616) 437-2310

BARBARA M HARRIS MSW LLC

Social Worker (Clinical)

41 WASHINGTON AVE, SUITE 320
GRAND HAVEN, MI 49417

Ottawa County (616) 846-0309

JOSEPH MERRELL III ACSW

Social Worker (Clinical)

41 WASHINGTON AVE, SUITE 368
GRAND HAVEN, MI 49417

Ottawa County (616) 844-7003

LINDA YOUMANS LPC

Counselor (Professional)

41 WASHINGTON AVE, SUITE 368
GRAND HAVEN, MI 49417

Ottawa County (734) 846-8241

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Kooistra's NPI number?

The NPI number for William Kooistra is 1508040627. It was assigned to this individual provider in the NPPES registry on December 26, 2007.

Where is William Kooistra located?

William Kooistra practices at 41 Washington Ave Ste 365, Grand Haven, MI 49417. The listed phone number is (616) 399-9911.

What is William Kooistra's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for William Kooistra was last updated on December 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.