Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1548885296 Individual Practitioner Female Practitioner

Dr. Marlene Williams , PhD

Psychologist • Sachse, TX

Professional Overview & Biography Verified Profile Summary

Dr. Marlene Williams, PhD is a registered healthcare professional specializing in Psychologist in Sachse, TX. Practice services are available at 4118 BULLWHIP CREEK LN under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

4118 Bullwhip Creek Ln

Sachse, TX 750484851

Telephone 4693430278

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Sachse, TX

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.5 Yrs
State Avg: 22.8 Yrs
Regional Practice Density
1 Specialists

Practicing in Sachse, TX (2266 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2025-08-22
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

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.

Career & Practice History Timeline

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

8 Historical Events
📍
Updated Practice Location August 22, 2025

Registered at 4118 BULLWHIP CREEK LN, SACHSE, TX 750484851 (Tel: 4693430278)

📍
Updated Business Mailing Address August 22, 2025

Registered at 4118 BULLWHIP CREEK LN, SACHSE, TX 750484851 (Tel: 8327667218)

NPI Profile Active June 09, 2020

NPI status registered as active in NPPES database

📍
Updated Practice Location June 09, 2020

Registered at 12810 HILLCREST RD # B123, DALLAS, TX 752301525 (Tel: 2144175328)

📍
Updated Business Mailing Address June 09, 2020

Registered at 8110 PARK LN APT 307, DALLAS, TX 752316089 (Tel: 8327667218)

👤
Provider Name / Credentials Updated June 09, 2020

Recorded as MARLENE WILLIAMS, PH.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 09, 2020

Psychologist

🟢
Initial NPI Registration & Enumeration June 09, 2020

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: 1548885296
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 09, 2020
Last Update: August 22, 2025
Sole Proprietor: No

Mailing Address

4118 Bullwhip Creek Ln

Sachse, TX 750484851

Phone: 8327667218

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.