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JOHN MALLORY
NPI 1891126678
Psychologist - Clinical in Bethesda, MD

Active since December 04, 2013
8901 ROCKVILLE PIKE, BETHESDA, MD 20889(301) 295-0500 Get Directions Write a Review

NPPES record last updated: June 1, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jun 1, 2026, May 23, 2025, Mar 17, 2018 and 1 more (4 updates tracked since 2017).

About John Mallory NPPES

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

JOHN MALLORY (NPI 1891126678) is an individual clinical provider in Bethesda, Maryland, licensed in Virginia (0810006431) and active in the NPI registry since December 2013. He maintains 2 additional practice locations.

NPPES Registry Identity

NPI1891126678
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameJOHN MALLORY
Location Address8901 ROCKVILLE PIKEBethesda, MD 20889-0001
Mailing Address8901 Rockville PikeBethesda, MD 20889-0001
Phone(301) 295-0500
Sole ProprietorYes
Enumeration DateDecember 4, 2013
Last NPPES UpdateJune 1, 20264 updates tracked since enumeration
NPPES CertifiedJune 1, 2026
✔ NPI 1891126678 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in VA · 0810006431
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.
8901 ROCKVILLE PIKE, Bethesda, MD 20889
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Secondary Practice Locations 2

Location 1Naval Medical Center Portsmouth, 620 John Paul Jones CirclePortsmouth, VA 23708-2111 · Phone (757) 953-5259
Location 22460 S Vine StDenver, CO 80208-0001 · Phone (303) 871-3626

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LIESL SHOCKLEY GRENIER M.D.
Dermatology (Dermatopathology)
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4000
MEGAN JUDITH LENIHAN MD
Surgery
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4000
JOHNS HOPKINS UNIVERSITY
Internal Medicine (Endocrinology, Diabetes & Metabolism)
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 400-1382
NATASHA ANTONY MD
Obstetrics & Gynecology
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4600
MATTHEW NICHOLAS RIBEIRO MD
Anesthesiology
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4000
MR. ANDREW JOSEPH ULLMANN JR. DO
Internal Medicine
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (908) 635-6978
BRYCE TANNER GARDNER DMD
Military Health Care Provider
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4340
PARESH RAM PATEL MD
Emergency Medicine
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4810

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 John Mallory's NPI number?

The NPI number for John Mallory is 1891126678. It was assigned to this individual provider in the NPPES registry on December 4, 2013.

Where is John Mallory located?

John Mallory practices at 8901 Rockville Pike, Bethesda, MD 20889. The listed phone number is (301) 295-0500.

What is John Mallory'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 John Mallory was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.