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G NEIL FOSTER, MD
NPI 1255455614
Obstetrics & Gynecology in Leesburg, VA

Active since March 19, 2007
44055 RIVERSIDE PKWY STE 238, LEESBURG, VA 20176(703) 858-3070(703) 858-3071 Get Directions Write a Review

NPPES record last updated: August 18, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 18, 2023, Aug 17, 2021 (2 updates tracked since 2021).

About G Neil Foster, Md NPPES

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

G NEIL FOSTER, MD (NPI 1255455614) is a healthcare organization registered as an obstetrics & gynecology in Leesburg, Virginia and active in the NPI registry since March 2007. The organization lists Mary Beth Tamasy, Ceo, as its authorized official.

NPPES Registry Identity

NPI1255455614
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameLOUDOUN MEDICAL GROUP, PC
Location Address44055 RIVERSIDE PKWY STE 238Leesburg, VA 20176-5178
Mailing Address224d Cornwall St Nw Ste 403Leesburg, VA 20176-2704 · (703) 737-6001 · Fax (571) 291-9786
Phone(703) 858-3070
Fax(703) 858-3071
Organization SubpartYes
Authorized OfficialMary Beth TamasyCeo · (703) 737-6010
Enumeration DateMarch 19, 2007
Last NPPES UpdateAugust 18, 20232 updates tracked since enumeration
NPPES CertifiedAugust 18, 2023
✔ NPI 1255455614 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.
44055 RIVERSIDE PKWY STE 238, Leesburg, VA 20176
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Other Names 1

Doing Business AsG Neil Foster, Md

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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

G Neil Foster, Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

291

Medicare enrollment records show 291 clinicians reassign Medicare billing to G Neil Foster, MD, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 195 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 35

Nurse Practitioner82
Family Practice29
Diagnostic Radiology24
Internal Medicine22
Certified Nurse Midwife (CNM)16
Obstetrics/Gynecology13
Urology13
Gastroenterology9
27 other specialties83

Nearest to this location (20)

See all 291
Jon Mader, M.D.
Physical Medicine and Rehabilitation
NPI 1255656864
44055 RIVERSIDE PARKWAY, SUITE 216
Leesburg, VA 20176
(703) 840-0665
✔ PECOS✔ Accepts MedicareSame address
Shahid Siddiqui
Internal Medicine
NPI 1386662757
44055 RIVERSIDE PARKWAY, SUITE 216
Leesburg, VA 20176
(703) 858-1395
✔ PECOS✔ Accepts MedicareSame address
Joy Saari, CFNP
Nurse Practitioner
NPI 1174516686
44055 RIVERSIDE PKWY SUITE 110
Leesburg, VA 20176
(703) 724-7530
✔ PECOS✔ Accepts MedicareSame address
Gavin Foster, MD
Obstetrics/Gynecology
NPI 1609860915
44055 RIVERSIDE PKWY STE 238
Leesburg, VA 20176
(703) 858-3070
✔ PECOSSame address
Paula Kukulich, CFNP
Nurse Practitioner
NPI 1821081332
44055 RIVERSIDE PKWY SUITE 110
Leesburg, VA 20176
(703) 724-7530
✔ PECOS✔ Accepts MedicareSame address
Shannon Lehr, M.D.
General Surgery
NPI 1497847347
44055 RIVERSIDE PKWY SUITE 246
Leesburg, VA 20176
(703) 858-3200
✔ PECOSSame address
Jennifer Francisco, FNP BC
Nurse Practitioner
NPI 1861944837
44045 RIVERSIDE PKWY
Leesburg, VA 20176
(703) 858-8074
✔ PECOS✔ Accepts Medicare0.1 mi
Sarfraz Choudhary, MD
Infectious Disease
NPI 1619960242
44035 RIVERSIDE PARKWAY, SUITE 440
Leesburg, VA 20176
(703) 858-9966
✔ PECOS✔ Accepts Medicare0.1 mi
Sandhya Chanda, MD
Internal Medicine
NPI 1043219710
19450 DEERFIELD AVE SUITE 400
Leesburg, VA 20176
(571) 223-5723
✔ PECOS✔ Accepts Medicare0.2 mi
Nauman Akhtar, M.D.
Orthopedic Surgery
NPI 1003017682
19450 DEERFIELD AVENUE, SUITE 200
Leesburg, VA 20176
(571) 209-1875
✔ PECOS✔ Accepts Medicare0.2 mi
Christopher Bourke, D.P.M.
Podiatry
NPI 1225456361
19450 DEERFIELD AVE STE 200
Leesburg, VA 20176
(703) 777-3262
✔ PECOS✔ Accepts Medicare0.2 mi
Yaser Cheema, MD
Interventional Cardiology
NPI 1124209663
19450 DEERFIELD AVENUE, SUITE 325
Leesburg, VA 20176
(703) 202-1111
✔ PECOS✔ Accepts Medicare0.2 mi
Catherine Ellis, M.D.
Endocrinology
NPI 1548473150
19450 DEERFIELD AVENUE, SUITE 200
Leesburg, VA 20176
(703) 844-8380
✔ PECOS✔ Accepts Medicare0.2 mi
Nadeem Khan, MD
Gastroenterology
NPI 1396708392
19450 DEERFIELD AVENUE, SUITE 335
Leesburg, VA 20176
(703) 858-3060
✔ PECOS✔ Accepts Medicare0.2 mi
Paria Djafari, MD
Family Practice
NPI 1114121142
44084 RIVERSIDE PKWY SUITE300
Leesburg, VA 20176
(703) 724-7530
✔ PECOS✔ Accepts Medicare0.2 mi
Kessie Herring, CNM
Certified Nurse Midwife (CNM)
NPI 1376305045
19455 DEERFIELD AVENUE, SUITE 204
Leesburg, VA 20176
(703) 858-1500
✔ PECOS✔ Accepts Medicare0.2 mi
Younghae Hyun Park, MD
Obstetrics/Gynecology
NPI 1134178965
19455 DEERFIELD AVENUE, SUITE 204
Leesburg, VA 20176
(703) 858-1500
✔ PECOS✔ Accepts Medicare0.2 mi
David Boyd, M.D., M.B.A.
Diagnostic Radiology
NPI 1265688048
19500 SANDRIDGE WAY, SUITE 420
Leesburg, VA 20176
(571) 375-8601
✔ PECOS✔ Accepts Medicare0.2 mi
Claire Edwards, MD
General Surgery
NPI 1134364599
19500 SANDRIDGE WAY, SUITE 450
Leeesburg, VA 20176
(703) 724-9474
✔ PECOS✔ Accepts Medicare0.2 mi
Mei-Hwa Firestone, MD
Hematology/Oncology
NPI 1699909093
19500 SANDRIDGE WAY, SUITE 450
Leesburg, VA 20176
(703) 656-9805
✔ PECOS✔ Accepts Medicare0.2 mi
See all 291 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 1255455614. It was assigned to this organization in the NPPES registry on March 19, 2007. The provider is doing business as G Neil Foster, MD.

Where is Loudoun Medical Group, PC located?

Loudoun Medical Group, PC is located at 44055 Riverside Pkwy Ste 238, Leesburg, VA 20176. The listed phone number is (703) 858-3070.

What is Loudoun Medical Group, PC's specialty?

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

Is Loudoun Medical Group, PC enrolled in Medicare?

Yes. Loudoun Medical Group, PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Loudoun Medical Group, PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 291 clinicians in 35 Medicare specialties reassign their Medicare billing to Loudoun Medical Group, PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (82), Family Practice (29) and Diagnostic Radiology (24). Of these, 6 practice at this address and 195 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Loudoun Medical Group, PC was last updated on August 18, 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.