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LOUDOUN MEDICAL GROUP, PC
NPI 1336018720
Family Medicine in Fairfax, VA

Active since November 03, 2025
3700 JOSEPH SIEWICK DRIVE, SUITE 106, FAIRFAX, VA 22033(703) 783-5673(703) 297-3919 Get Directions Write a Review

NPPES record last updated: December 2, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 2, 2025, Nov 12, 2025, Nov 3, 2025 (3 updates tracked since 2025).

About Loudoun Medical Group, Pc NPPES

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

LOUDOUN MEDICAL GROUP, PC (NPI 1336018720), doing business as Physicians Premiere Concierge Medicine, is a healthcare organization registered as a family medicine in Fairfax, Virginia and active in the NPI registry since November 2025. The organization lists Mary Beth Tamasy, Ceo, as its authorized official.

NPPES Registry Identity

NPI1336018720
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameLOUDOUN MEDICAL GROUP, PC
Location Address3700 JOSEPH SIEWICK DRIVE, SUITE 106Fairfax, VA 22033-1737
Mailing Address224d Cornwall St Nw Ste 403Leesburg, VA 20176-2704 · (703) 737-6010 · Fax (703) 443-8643
Phone(703) 783-5673
Fax(703) 297-3919
Organization SubpartYes
Authorized OfficialMary Beth TamasyCeo · (703) 737-6010
Enumeration DateNovember 3, 2025
Last NPPES UpdateDecember 2, 20253 updates tracked since enumeration
NPPES CertifiedDecember 2, 2025
✔ NPI 1336018720 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
3700 JOSEPH SIEWICK DRIVE, SUITE 106, Fairfax, VA 22033
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Other Names 1

Doing Business AsPhysicians Premiere Concierge Medicine

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES

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

LOUDOUN MEDICAL GROUP, PC
Family Medicine (Obesity Medicine)
3700 JOSEPH SIEWICK DRIVE, SUITE 106
FAIRFAX, VA 22033
Fairfax County (571) 724-4400

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 1336018720. It was assigned to this organization in the NPPES registry on November 3, 2025. The provider is doing business as Physicians Premiere Concierge Medicine.

Where is Loudoun Medical Group, PC located?

Loudoun Medical Group, PC is located at 3700 Joseph Siewick Drive, Suite 106, Fairfax, VA 22033. The listed phone number is (703) 783-5673.

What is Loudoun Medical Group, PC's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

When was this NPI record last updated?

The NPPES record for Loudoun Medical Group, PC was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.