Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1306987045 Individual Practitioner Male Practitioner

Dr. Stephen James Lally , PhD, ABPP

Psychologist • Arlington, VA

Professional Overview & Biography Verified Profile Summary

Dr. Stephen Lally, PhD, ABPP is a registered healthcare professional specializing in Psychologist in Arlington, VA. Practice services are available at 1655 FORT MYER DR under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

1655 Fort Myer Dr
Suite 700

Arlington, VA 222093113

Telephone 7035271111
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Arlington, VA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 24.0 Yrs
State Avg: 24.5 Yrs
Regional Practice Density
47 Specialists

Practicing in Arlington, VA (511 Statewide)

Telehealth Adoption Rate
4.3% 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

Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

State License NC 1540

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 DC 1532

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 MD 2529

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 - Clinical

NUCC Taxonomy Code: 103TC0700X

State License VA 2182

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Practice Associates & Co-Workers

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

11 Associated Practitioners
Dr. Erin Kelley , PhD

Psychologist - Clinical

NPI 1154646024

Doctor of Philosophy (Ph.D.)

Dr. Mark Yapelli , PhD

Psychologist - Clinical

NPI 1215364914

Doctor of Philosophy (Ph.D.)

Dr. William Brown , PsyD

Psychologist - Clinical

NPI 1235259375

Doctor of Psychology (Psy.D.)

Dr. Lyzaida Rivera-Bauer , PhD

Psychologist - Clinical

NPI 1245789494

Doctor of Philosophy (Ph.D.)

Dr. Richard Fleitas , PsyD

Psychologist - Clinical

NPI 1306980677

Doctor of Psychology (Psy.D.)

Marlene Drucker , MSW

Counselor - Mental Health

NPI 1346405115

Master of Social Work

Career & Practice History Timeline

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

7 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 11, 2025

Psychologist (License #1532 in DC)

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 1655 FORT MYER DR, SUITE 700, ARLINGTON, VA 222093113 (Tel: 7035271111)

📍
Updated Business Mailing Address July 08, 2007

Registered at PO BOX 2501, ALEXANDRIA, VA 223010501 (Tel: 7035271111)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as STEPHEN LALLY, PH.D., ABPP

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Psychologist (License #1540 in NC)

🟢
Initial NPI Registration & Enumeration February 08, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1306987045
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 08, 2007
Last Update: September 11, 2025
Sole Proprietor: Yes

Mailing Address

Po Box 2501

Alexandria, VA 223010501

Phone: 7035271111

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.