1. Home
  2. Directory
  3. Virginia
  4. Leesburg
  5. Internal Medicine
  6. NPI Profile

ASHBURN STERLING INTERNAL MEDICINE & PEDIATRICS
NPI 1366709651
Internal Medicine in Leesburg, VA

Active since April 12, 2012CLIA 49D0975961 · Waiver
19415 DEERFIELD AVE, SUITE 213, LEESBURG, VA 20176(703) 729-9220(703) 858-3529 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 16, 2022, Mar 9, 2022, Aug 19, 2021 and 1 more (4 updates tracked since 2021).

About Ashburn Sterling Internal Medicine & Pediatrics NPPES

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

ASHBURN STERLING INTERNAL MEDICINE & PEDIATRICS (NPI 1366709651) is a healthcare organization registered as an internal medicine in Leesburg, Virginia and active in the NPI registry since April 2012. The organization holds a CLIA Waiver certificate valid through July 20, 2028 and lists Mary Beth Tamasy, Ceo, as its authorized official.

NPPES Registry Identity

NPI1366709651
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameLOUDOUN MEDICAL GROUP, PC
Location Address19415 DEERFIELD AVE, SUITE 213Leesburg, VA 20176-8470
Mailing Address224d Cornwall Street, Nw, Ste 403Leesburg, VA 20176-2704 · (703) 737-6010 · Fax (571) 291-9786
Phone(703) 729-9220
Fax(703) 858-3529
Organization SubpartYes
Authorized OfficialMary Beth TamasyCeo · (703) 737-6010
Enumeration DateApril 12, 2012
Last NPPES UpdateApril 24, 20234 updates tracked since enumeration
NPPES CertifiedApril 24, 2023
✔ NPI 1366709651 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.
Also ListedPediatricsTaxonomy 208000000X
19415 DEERFIELD AVE, SUITE 213, Leesburg, VA 20176
Open in Google Maps ↗

Other Names 1

Doing Business AsAshburn Sterling Internal Medicine & Pediatrics

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 49D0975961

Ashburn Sterling Internal Medicine And Pediatrics · Leesburg, VA
Active · expires Jul 20, 2028
CLIA Number49D0975961
Laboratory TypePhysician Office
Certificate Effective DateJuly 21, 2026
Certificate Expiration DateJuly 20, 2028
Laboratory DirectorTareq Abedin
Laboratory Phone(703) 729-9220
Laboratory LocationAshburn Sterling Internal Medicine And Pediatrics19415 Deerfield Avenue, Suite 213, Leesburg, VA 20176
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 4

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

LAUREN ELIZABETH SCHAAF
Physician Assistant
19415 DEERFIELD AVE, SUITE 213
LEESBURG, VA 20176
Loudoun County (703) 729-9220
AISHA CHIANG
Physician Assistant
19415 DEERFIELD AVE, SUITE 213
LEESBURG, VA 20176
Loudoun County (703) 729-9220
TAREQ ABEDIN MD
Internal Medicine
19415 DEERFIELD AVE, SUITE 213
LEESBURG, VA 20176
Loudoun County (703) 729-9220
MEGAN CATHERINE KISH
Physician Assistant
19415 DEERFIELD AVE, SUITE 213
LEESBURG, VA 20176
Loudoun County (703) 729-9220

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 1366709651. It was assigned to this organization in the NPPES registry on April 12, 2012. The provider is doing business as Ashburn Sterling Internal Medicine & Pediatrics.

Where is Loudoun Medical Group, PC located?

Loudoun Medical Group, PC is located at 19415 Deerfield Ave, Suite 213, Leesburg, VA 20176. The listed phone number is (703) 729-9220.

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 49D0975961) is associated with this NPI, valid through July 20, 2028. 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.