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LOUDOUN MEDICAL GROUP, PC
NPI 1912156266
Obstetrics & Gynecology in Sterling, VA

Active since September 11, 2008
21135 WHITFIELD PL STE 107, STERLING, VA 20165(703) 430-2070(703) 430-2952 Get Directions Write a Review

NPPES record last updated: November 3, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 3, 2025, Sep 22, 2022, Apr 10, 2020 (3 updates tracked since 2020).

About Loudoun Medical Group, Pc NPPES

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

LOUDOUN MEDICAL GROUP, PC (NPI 1912156266), doing business as Loudoun Ob/gyn & Midwives, is a healthcare organization registered as an obstetrics & gynecology in Sterling, Virginia and active in the NPI registry since September 2008. The organization lists Mary Beth Tamasy, Ceo, as its authorized official.

NPPES Registry Identity

NPI1912156266
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameLOUDOUN MEDICAL GROUP, PC
Location Address21135 WHITFIELD PL STE 107Sterling, VA 20165-7279
Mailing Address224d Cornwall St Nw Ste 403Leesburg, VA 20176-2704 · (703) 737-6010 · Fax (703) 443-8643
Phone(703) 430-2070
Fax(703) 430-2952
Organization SubpartYes
Authorized OfficialMary Beth TamasyCeo · (703) 737-6010
Enumeration DateSeptember 11, 2008
Last NPPES UpdateNovember 3, 20253 updates tracked since enumeration
NPPES CertifiedNovember 3, 2025
✔ NPI 1912156266 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
21135 WHITFIELD PL STE 107, Sterling, VA 20165
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Other Names 1

Doing Business AsLoudoun Ob/gyn & Midwives

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 4

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

SARAH SUSAN FLETCHER MD
Family Medicine
21135 WHITFIELD PL STE 107
STERLING, VA 20165
Loudoun County (703) 421-7000
STERLING FAMILY MEDICAL PLLC
Family Medicine
21135 WHITFIELD PL STE 107
STERLING, VA 20165
Loudoun County (703) 850-8215
CYNTHIA DAWN YEW CFNP
Nurse Practitioner (Family)
21135 WHITFIELD PL STE 107
STERLING, VA 20165
Loudoun County (703) 421-7000
STERLING WELLNESS, PLLC
Clinic/Center (Primary Care)
21135 WHITFIELD PL STE 107
STERLING, VA 20165
Loudoun County (703) 421-7000

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 1912156266. It was assigned to this organization in the NPPES registry on September 11, 2008. The provider is doing business as Loudoun OB/GYN & Midwives.

Where is Loudoun Medical Group, PC located?

Loudoun Medical Group, PC is located at 21135 Whitfield Pl Ste 107, Sterling, VA 20165. The listed phone number is (703) 430-2070.

What is Loudoun Medical Group, PC's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for Loudoun Medical Group, PC was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.