Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1093090474 Individual Practitioner Male Practitioner

Dr. Michael Andrew Williston , PsyD

Psychologist • Wilmington, DE

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Michael Williston, PsyD is a certified Psychologist practicing in Wilmington, DE. With approximately 15 years of clinical experience since completing medical education in 2011, Dr. Williston delivers high-quality medical care to the local community at 4000 NEXUS DR STE NE3-100.

Dr. Williston is affiliated with Christiana Care Health Services Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Practice Location & Contact Primary Location

Practice Address

4000 Nexus Dr Ste Ne3-100

Wilmington, DE 198033000

Telephone 3023209771
Fax 3026237964
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Other

Graduation Year

2011

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Wilmington, DE

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
15 Yrs -9.5 yrs vs City Avg
City Avg: 24.5 Yrs
State Avg: 28.7 Yrs
Regional Practice Density
83 Specialists

Practicing in Wilmington, DE (157 Statewide)

Telehealth Adoption Rate
16.9% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Williston (15 Years) 15 Yrs
Wilmington Specialty Average (24.5 Years) 24.5 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-01-13
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

State License DE B1-0011487

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of 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; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

Psychologist

NUCC Taxonomy Code: 103T00000X

State License PA PS017269

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of 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; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

Hospital & Practice Group Affiliations

Christiana Care Health Services Inc

501 W 14th St Wilmington Hospital, Wilmington, DE 198011013

Phone: 3024284410

Secondary Practice Locations

112 N Broad St

Philadelphia, PA 191021512

Phone: 2155680860

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

2 Associated Practitioners
Ashley Pipoli , PA-C

Physician Assistant

NPI 1497388821

Physician Assistant (Certified)

Lisa Campbell , FNP

Nurse Practitioner - Family

NPI 1679228332

Family Nurse Practitioner

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events
📍
Updated Practice Location January 13, 2025

Registered at 4000 NEXUS DR STE NE3-100, WILMINGTON, DE 198033000 (Tel: 3023209771)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 13, 2025

Psychologist (License #B1-0011487 in DE)

NPI Profile Active October 17, 2011

NPI status registered as active in NPPES database

📍
Updated Practice Location October 17, 2011

Registered at 112 N BROAD ST, PHILADELPHIA, PA 191021512 (Tel: 2155680860)

📍
Updated Business Mailing Address October 17, 2011

Registered at 112 N BROAD ST, PHILADELPHIA, PA 191021512 (Tel: 2155680860)

👤
Provider Name / Credentials Updated October 17, 2011

Recorded as MICHAEL WILLISTON, PSY.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 17, 2011

Psychologist

🟢
Initial NPI Registration & Enumeration October 17, 2011

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1093090474
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 17, 2011
Last Update: January 13, 2025
Sole Proprietor: No

Mailing Address

112 N Broad St

Philadelphia, PA 191021512

Phone: 2155680860

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.