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LEESBURG STERLING FAMILY PRACTICE
NPI 1629520531
Family Medicine in Dulles, VA

Active since October 26, 2016CLIA 49D2120907 · Waiver
24430 STONE SPRINGS BLVD, SUITE 135, DULLES, VA 20166(703) 957-1255(703) 665-2375 Get Directions Write a Review

NPPES record last updated: April 24, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Sep 21, 2022, Oct 26, 2016 (2 updates tracked since 2016).

About Leesburg Sterling Family Practice NPPES

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

LEESBURG STERLING FAMILY PRACTICE (NPI 1629520531) is a healthcare organization registered as a family medicine in Dulles, Virginia and active in the NPI registry since October 2016. The organization holds a CLIA Waiver certificate valid through October 25, 2026 and lists Mary Beth Tamasy, Ceo, as its authorized official.

NPPES Registry Identity

NPI1629520531
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameLOUDOUN MEDICAL GROUP, PC
Location Address24430 STONE SPRINGS BLVD, SUITE 135Dulles, VA 20166-2269
Mailing Address224-d Cornwall Street, Nw, Suite 403Leesburg, VA 20176-2704 · (703) 737-6010
Phone(703) 957-1255
Fax(703) 665-2375
Organization SubpartYes
Authorized OfficialMary Beth TamasyCeo · (703) 737-6010
Enumeration DateOctober 26, 2016
Last NPPES UpdateApril 24, 20232 updates tracked since enumeration
NPPES CertifiedApril 24, 2023
✔ NPI 1629520531 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.
24430 STONE SPRINGS BLVD, Dulles, VA 20166
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Other Names 1

Doing Business AsLeesburg Sterling Family Practice

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 49D2120907

Leesburg Sterling Family Practice · Dulles, VA
Active · expires Oct 25, 2026
CLIA Number49D2120907
Laboratory TypePhysician Office
Certificate Effective DateOctober 26, 2024
Certificate Expiration DateOctober 25, 2026
Laboratory DirectorJonathan D. Charen
Laboratory Phone(703) 858-2840
Laboratory LocationLeesburg Sterling Family Practice24430 Stone Springs Boulevard - Suite 135, Dulles, VA 20166
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

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.

DANAH JAGUETA BALMACEDA NURSE PRACTITIONER
Nurse Practitioner (Critical Care Medicine)
24430 STONE SPRINGS BLVD
DULLES, VA 20166
Loudoun County (571) 439-4000
LOUDOUN MEDICAL GROUP, PC
Pediatrics
24430 STONE SPRINGS BLVD, SUITE 115
DULLES, VA 20166
Loudoun County (703) 957-1247
MARGARET JEANNE BRANDQUIST CNM
Advanced Practice Midwife
24430 STONE SPRINGS BLVD, SUITE 550
DULLES, VA 20166
Loudoun County (703) 957-1245
SPECIALTY PHYSICIANS OF NORTHERN VIRGINIA, LLC
Surgery
24430 STONE SPRINGS BLVD
DULLES, VA 20166
Loudoun County (703) 665-2430
LOUDOUN MEDICAL GROUP, PC
Surgery
24430 STONE SPRINGS BLVD, SUITE 100
DULLES, VA 20166
Loudoun County (703) 858-3200
THE CARDIOVASCULAR GROUP, PC
Internal Medicine (Cardiovascular Disease)
24430 STONE SPRINGS BLVD, #425
DULLES, VA 20166
Loudoun County (703) 722-5860
LOUDOUN MEDICAL GROUP, PC
Specialist
24430 STONE SPRINGS BLVD, SUITE 100
DULLES, VA 20166
Loudoun County (703) 858-3208
LOUDOUN MEDICAL GROUP, PC
Specialist
24430 STONE SPRINGS BLVD, SUITE 100
DULLES, VA 20166
Loudoun County (703) 723-3398

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 1629520531. It was assigned to this organization in the NPPES registry on October 26, 2016. The provider is doing business as Leesburg Sterling Family Practice.

Where is Loudoun Medical Group, PC located?

Loudoun Medical Group, PC is located at 24430 Stone Springs Blvd Suite 135, Dulles, VA 20166. The listed phone number is (703) 957-1255.

What is Loudoun Medical Group, PC's specialty?

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

Does Loudoun Medical Group, PC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 49D2120907) is associated with this NPI, valid through October 25, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Loudoun Medical Group, PC was last updated on April 24, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.