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NORTHERN VIRGINIA ENDOCRINOLOGISTS INC
NPI 1164529343
Internal Medicine - Endocrinology, Diabetes & Metabolism in Fairfax, VA

Active since September 20, 2006
3650 JOSEPH SIEWICK DR, SUITE 305, FAIRFAX, VA 22033(703) 648-1831 Get Directions Write a Review

NPPES record last updated: July 23, 2019. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Northern Virginia Endocrinologists Inc NPPES

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

NORTHERN VIRGINIA ENDOCRINOLOGISTS INC (NPI 1164529343) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Fairfax, Virginia and active in the NPI registry since September 2006. The organization lists Patricia Evans, Business Manager, as its authorized official.

NPPES Registry Identity

NPI1164529343
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NameNORTHERN VIRGINIA ENDOCRINOLOGISTS INC
Location Address3650 JOSEPH SIEWICK DR, SUITE 305Fairfax, VA 22033-1710
Mailing Address3650 Joseph Siewick Dr, Suite 305Fairfax, VA 22033-1710 · (703) 648-1831 · Fax (703) 648-2552
Phone(703) 648-1831
Organization SubpartNo
Authorized OfficialPatricia EvansBusiness Manager · (703) 849-8440
Enumeration DateSeptember 20, 2006
Last NPPES UpdateJuly 23, 2019
✔ NPI 1164529343 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
3650 JOSEPH SIEWICK DR, Fairfax, VA 22033
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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 49D0221560

Northern Virginia Endocrinologists · Fairfax, VA
Expired · Aug 10, 2026
CLIA Number49D0221560
Laboratory TypePhysician Office
Certificate Effective DateAugust 11, 2024
Certificate Expiration DateAugust 10, 2026
Laboratory DirectorRoy W. Langley
Laboratory Phone(703) 849-8440
Laboratory LocationNorthern Virginia Endocrinologists2826 Old Lee Highway, Suite 250, Fairfax, VA 22031
CLIA data matches this NPI record on: Name Phone
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.

THUY PHUONG THI VO M.D.
Family Medicine
3650 JOSEPH SIEWICK DR, 400
FAIRFAX, VA 22033
Fairfax County (703) 391-2020
KATHERINE BOOKER PT
Physical Therapist
3650 JOSEPH SIEWICK DR, SUITE 308
FAIRFAX, VA 22033
Fairfax County (703) 716-4794
DR. LAURA E. BYRNES M.D.
Pediatrics
3650 JOSEPH SIEWICK DR, STE 101
FAIRFAX, VA 22033
Fairfax County (703) 391-0900
DR. HEON SOO YI M.D.
Family Medicine
3650 JOSEPH SIEWICK DR, SUITE 400
FAIRFAX, VA 22033
Fairfax County (703) 391-2020
VICTORIA LESSINGER MERKEL MD
Family Medicine
3650 JOSEPH SIEWICK DR, STE 400
FAIRFAX, VA 22033
Fairfax County (703) 391-2020
BRENT R AIN MD
Orthopaedic Surgery
3650 JOSEPH SIEWICK DR, SUITE 300
FAIRFAX, VA 22033
Fairfax County (703) 391-0111
SANDY L. CHUNG M.D.
Pediatrics
3650 JOSEPH SIEWICK DR, STE 101
FAIRFAX, VA 22033
Fairfax County (703) 391-0900
DR. PETER STEPHEN ROSS MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
3650 JOSEPH SIEWICK DR, #305
FAIRFAX, VA 22033
Fairfax County (703) 648-1831

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 Northern Virginia Endocrinologists Inc's NPI number?

The NPI number for Northern Virginia Endocrinologists Inc is 1164529343. It was assigned to this organization in the NPPES registry on September 20, 2006.

Where is Northern Virginia Endocrinologists Inc located?

Northern Virginia Endocrinologists Inc is located at 3650 Joseph Siewick Dr Suite 305, Fairfax, VA 22033. The listed phone number is (703) 648-1831.

What is Northern Virginia Endocrinologists Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Northern Virginia Endocrinologists Inc was last updated on July 23, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.