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Dr. Michael Andrew Williston

PSY.D. | Psychologist


  4000 Nexus Dr Ste Ne3-100, Wilmington
     Delaware, 19803-3000
  302-320-9771    302-623-7964 Maps & Directions
Dr. Michael Andrew Williston is a Wilmington, Delaware based psychologist 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 reach him at 302-320-9771 or can fax him at 302-623-7964. Dr. Michael Andrew Williston is PSY.D. 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.
Complete Profile:
Dr. Michael Andrew Williston speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.
Name: Dr. Michael Andrew Williston
Specialization: General Psychology
Gender:Male
Credentials: PSY.D.
Practice Address:4000 Nexus Dr Ste Ne3-100, Wilmington,
Delaware, 19803-3000
Phone:302-320-9771
Fax:302-623-7964
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 Number: 1093090474
NPI Enumeration Date: 17 Oct, 2011
NPI Last Update On: 13 Jan, 2025

Medical Licenses:
Doctors can have one or more medical licenses for different specialities 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
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
Address: Dr. Michael Andrew Williston
112 N Broad St,
Philadelphia, Pennsylvania
Zip: 19102-1512
Phone Number: 215-568-0860
Patients can reach Dr. Michael Andrew Williston at 4000 Nexus Dr Ste Ne3-100, Wilmington, Delaware or can call to book an appointment on 302-320-9771.
Comments/ Reviews:
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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.

Dr. Michael Andrew Williston Details: Complete Profile Professional Identification Codes Medical Licenses Business Mailing Address Book Appointment Patient Reviews
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