Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARY COLLEEN BYRNE PH.D.
NPI 1952405565
Psychologist - Clinical in Alexandria, VA

Q: What is Mary Byrne's NPI number?

The NPI number for Mary Byrne is 1952405565. It was assigned to this individual provider in the NPPES registry on September 12, 2006.

Q: What is Mary Byrne's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Mary Byrne was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 47 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 12, 2006

37 KENNEDY ST, ALEXANDRIA, VA 22305(703) 618-1415 Get Directions Write a Review

NPPES record last updated: June 22, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Mary Colleen Byrne Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARY COLLEEN BYRNE PH.D. (NPI 1952405565) is an individual clinical provider in Alexandria, Virginia, licensed in Virginia (0810003031) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1952405565

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. MARY COLLEEN BYRNECredential: PH.D.

Location Address37 KENNEDY STAlexandria, VA 22305-2518

Mailing Address37 Kennedy StAlexandria, VA 22305-2518 · (703) 618-1415

Phone(703) 618-1415

Sole ProprietorYes

Enumeration DateSeptember 12, 2006

Last NPPES UpdateJune 22, 2026

NPPES CertifiedJune 22, 2026

✔ NPI 1952405565 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

Licenses✔ Licensed in VA · 0810003031✔ Licensed in MD · 03870

Definition

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.

37 KENNEDY ST, Alexandria, VA 22305

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Byrne's NPI number?

The NPI number for Mary Byrne is 1952405565. It was assigned to this individual provider in the NPPES registry on September 12, 2006.

Where is Mary Byrne located?

Mary Byrne practices at 37 Kennedy St, Alexandria, VA 22305. The listed phone number is (703) 618-1415.

What is Mary Byrne's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Mary Byrne was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 47 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.