Psychologist

Dr. Diane K. Kosters, PH.D.

43 Quail Ct Ste 213, Walnut Creek, California, 94596-8702

About Dr. Diane K. Kosters

Dr. Diane K. Kosters is a psychologist based in Walnut Creek, California who is specialized in Psychology. Active license number of Dr. Diane K. Kosters is PSY7055 for General Psychology in California. Her current practice location is 43 Quail Ct Ste 213, Walnut Creek. Patients can reach her at 925-946-9660 or can fax her at 925-946-9660. Dr. Diane K. Kosters is PH.D. in Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1902029275.

Dr. Diane K. Kosters is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Practice Information

Dr. Diane K. Kosters speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Diane K. Kosters
Specialization Psychology
Credentials PH.D.
Gender Female
Practice Address: 43 Quail Ct Ste 213,
Walnut Creek, CA - 94596-8702
Fax 925-946-9660

Professional Identification Codes

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

NPI Number1902029275
NPI Enumeration Date: 11 Apr, 2007
NPI Last Update On: 11 Sep, 2025

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. Diane K. Kosters are as mentioned below.

License NumberSpecializationStateStatus
PSY7055General Psychology CaliforniaPrimary
PSY7055Clinical Neuropsychologist CaliforniaSecondary

Mailing Address

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

Dr. Diane K. Kosters
445 Lakewood Cir,
Walnut Creek, CA - 94598-4838
Phone: 925-946-9660
Fax: 925-946-9660

Book an Appointment with Dr. Diane K. Kosters

To schedule an appointment, contact Dr. Diane K. Kosters at 43 Quail Ct Ste 213, Walnut Creek, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Diane K. Kosters:

Dr. Diane K. Kosters is a psychologist specializing in General Psychology. She is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Yes, Dr. Diane K. Kosters is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Dr. Diane K. Kosters practices at 43 Quail Ct Ste 213, Walnut Creek, California, 94596-8702.

To schedule an appointment with Dr. Diane K. Kosters, please contact the office at 925-946-9660.

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