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LOUDOUN MEDICAL GROUP, PC
NPI 1164778932
Internal Medicine - Gastroenterology in Leesburg, VA

Active since July 31, 2012
19450 DEERFIELD AVENUE, SUITE 335, LEESBURG, VA 20176(703) 858-3060(703) 858-3061 Get Directions Write a Review

NPPES record last updated: April 12, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 12, 2026, Sep 22, 2022, Aug 16, 2021 (3 updates tracked since 2021).

About Loudoun Medical Group, Pc NPPES

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

LOUDOUN MEDICAL GROUP, PC (NPI 1164778932), doing business as Loudoun Gastroenterology, is a healthcare organization registered as a gastroenterology in Leesburg, Virginia and active in the NPI registry since July 2012. The organization lists Mary Beth Tamasy, Ceo, as its authorized official.

NPPES Registry Identity

NPI1164778932
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameLOUDOUN MEDICAL GROUP, PC
Location Address19450 DEERFIELD AVENUE, SUITE 335Leesburg, VA 20176-6822
Mailing Address224-d Cornwall Street, Nw, Suite 403Leesburg, VA 20176-2704 · (703) 737-6010 · Fax (703) 443-8643
Phone(703) 858-3060
Fax(703) 858-3061
Organization SubpartYes
Authorized OfficialMary Beth TamasyCeo · (703) 737-6010
Enumeration DateJuly 31, 2012
Last NPPES UpdateApril 12, 20263 updates tracked since enumeration
NPPES CertifiedApril 12, 2026
✔ NPI 1164778932 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
19450 DEERFIELD AVENUE, SUITE 335, Leesburg, VA 20176
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Other Names 1

Doing Business AsLoudoun Gastroenterology

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 2

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

ROBERT DAVID LAFSKY M.D.
Internal Medicine (Gastroenterology)
19450 DEERFIELD AVENUE, SUITE 335
LEESBURG, VA 20176
Loudoun County (703) 858-3060
NADEEM A KHAN MD
Internal Medicine (Gastroenterology)
19450 DEERFIELD AVENUE, SUITE 335
LEESBURG, VA 20176
Loudoun County (703) 858-3060

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 Loudoun Medical Group, PC's NPI number?

The NPI number for Loudoun Medical Group, PC is 1164778932. It was assigned to this organization in the NPPES registry on July 31, 2012. The provider is doing business as Loudoun Gastroenterology.

Where is Loudoun Medical Group, PC located?

Loudoun Medical Group, PC is located at 19450 Deerfield Avenue, Suite 335, Leesburg, VA 20176. The listed phone number is (703) 858-3060.

What is Loudoun Medical Group, PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Loudoun Medical Group, PC was last updated on April 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.