Psychologist | General Psychology

Dr. Michael Andrew Williston, PSY.D.

4000 Nexus Dr Ste Ne3-100, Wilmington, Delaware, 19803-3000

About Dr. Michael Andrew Williston

Dr. Michael Andrew Williston is a psychologist based in Wilmington, Delaware who is specialized in General Psychology. Active license number of Dr. Michael Andrew Williston is B1-0011487 for General Psychology in Delaware. His current practice location is 4000 Nexus Dr Ste Ne3-100, Wilmington. Patients can contact him at 302-320-9771 or can fax him at 302-623-7964. Dr. Michael Andrew Williston, PSY.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1093090474.

Dr. Michael Andrew Williston is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He 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. Michael Andrew Williston'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 Dr. Michael Andrew Williston
Specialization General Psychology
Credentials PSY.D.
Gender Male
Practice Address: 4000 Nexus Dr Ste Ne3-100,
Wilmington, DE - 19803-3000
Fax 302-623-7964

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 Number1093090474
NPI Enumeration Date: 17 Oct, 2011
NPI Last Update On: 13 Jan, 2025

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 Dr. Michael Andrew Williston are as mentioned below.

License NumberSpecializationStateStatus
B1-0011487General Psychology DelawarePrimary
PS017269General Psychology PennsylvaniaSecondary

Mailing Address

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

Dr. Michael Andrew Williston
112 N Broad St,
Philadelphia, PA - 19102-1512
Phone: 215-568-0860

Book an Appointment with Dr. Michael Andrew Williston

To schedule an appointment, contact Dr. Michael Andrew Williston at 4000 Nexus Dr Ste Ne3-100, Wilmington, Delaware or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Michael Andrew Williston:

Dr. Michael Andrew Williston is a psychologist specializing in General Psychology. He is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He 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. Michael Andrew Williston 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.

Dr. Michael Andrew Williston practices at 4000 Nexus Dr Ste Ne3-100, Wilmington, Delaware, 19803-3000.

To schedule an appointment with Dr. Michael Andrew Williston, please contact the office at 302-320-9771.

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