Psychologist | Clinical Psychology

William P. Kooistra, PH.D.

41 Washington Ave, Ste 365, Grand Haven, Michigan, 49417-3304

About William P. Kooistra

William P. Kooistra is a psychologist based in Grand Haven, Michigan who is specialized in Clinical Psychology. Active license number of William P. Kooistra is 6301007943 for Clinical Psychology in Michigan. His current practice location is 41 Washington Ave, Ste 365, Grand Haven. Patients can contact him at 616-399-9911. William P. Kooistra, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1508040627.

William P. Kooistra is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

William P. Kooistra's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name William P. Kooistra
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 41 Washington Ave, Ste 365
Grand Haven, MI - 49417-3304

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1508040627
NPI Enumeration Date: 26 Dec, 2007
NPI Last Update On: 23 Dec, 2016

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for William P. Kooistra are as mentioned below.

License NumberSpecializationStateStatus
6301007943Clinical Psychology MichiganPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

William P. Kooistra
41 Washington Ave, Ste 365
Grand Haven, MI - 49417-3304
Phone: 616-638-7557

Book an Appointment with William P. Kooistra

To schedule an appointment, contact William P. Kooistra at 41 Washington Ave, Ste 365, Grand Haven, Michigan or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William P. Kooistra:

William P. Kooistra is a psychologist specializing in Clinical Psychology. He is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, William P. Kooistra is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

William P. Kooistra practices at 41 Washington Ave, Ste 365, Grand Haven, Michigan, 49417-3304.

To schedule an appointment with William P. Kooistra, please contact the office at 616-399-9911.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.