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DULLES MEDICAL GROUP
NPI 1265788038
Internal Medicine in Sterling, VA

Active since July 31, 2012CLIA 49D2049663 · Waiver
21495 RIDGETOP CIRCLE, STE 302, STERLING, VA 20166(703) 430-6600(703) 779-0887 Get Directions Write a Review

NPPES record last updated: April 24, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 16, 2022, Mar 12, 2022, Aug 17, 2021 (3 updates tracked since 2021).

About Dulles Medical Group NPPES

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

DULLES MEDICAL GROUP (NPI 1265788038) is a healthcare organization registered as an internal medicine in Sterling, Virginia and active in the NPI registry since July 2012. The organization holds a CLIA Waiver certificate valid through November 8, 2026 and lists Mary Beth Tamasy, Ceo, as its authorized official.

NPPES Registry Identity

NPI1265788038
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameLOUDOUN MEDICAL GROUP, PC
Location Address21495 RIDGETOP CIRCLE, STE 302Sterling, VA 20166-6512
Mailing Address224d Cornwall St Nw Ste 403Leesburg, VA 20176-2704 · (703) 737-6010 · Fax (571) 291-9786
Phone(703) 430-6600
Fax(703) 779-0887
Organization SubpartYes
Authorized OfficialMary Beth TamasyCeo · (703) 737-6010
Enumeration DateJuly 31, 2012
Last NPPES UpdateApril 24, 20233 updates tracked since enumeration
NPPES CertifiedApril 24, 2023
✔ NPI 1265788038 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
21495 RIDGETOP CIRCLE, STE 302, Sterling, VA 20166
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Other Names 1

Doing Business AsDulles Medical Group

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

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 49D2049663

Dulles Medical Group · Sterling, VA
Active · expires Nov 8, 2026
CLIA Number49D2049663
Laboratory TypePhysician Office
Certificate Effective DateNovember 9, 2024
Certificate Expiration DateNovember 8, 2026
Laboratory DirectorAnil J. Patel
Laboratory Phone(703) 430-6600
Laboratory LocationDulles Medical Group21495 Ridgetop Circle - Suite 302, Sterling, VA 20166
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 1265788038. It was assigned to this organization in the NPPES registry on July 31, 2012. The provider is doing business as Dulles Medical Group.

Where is Loudoun Medical Group, PC located?

Loudoun Medical Group, PC is located at 21495 Ridgetop Circle, Ste 302, Sterling, VA 20166. The listed phone number is (703) 430-6600.

What is Loudoun Medical Group, PC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

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

Yes. A Certificate of Waiver (number 49D2049663) is associated with this NPI, valid through November 8, 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 weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.