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ROBERT A. NUSSBAUM, MD, P.C.
NPI 1598041477
Internal Medicine - Gastroenterology in Alexandria, VA

Active since October 24, 2011CLIA 49D0968758 · Waiver
6355 WALKER LN, STE 309, ALEXANDRIA, VA 22310(703) 313-8400(703) 313-9666 Get Directions Write a Review

NPPES record last updated: March 4, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Robert A. Nussbaum, Md, P.c. NPPES

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

ROBERT A. NUSSBAUM, MD, P.C. (NPI 1598041477) is a healthcare organization registered as a gastroenterology in Alexandria, Virginia and active in the NPI registry since October 2011. The organization holds a CLIA Waiver certificate valid through December 20, 2027 and lists Robert A Nussbaum, President, as its authorized official.

NPPES Registry Identity

NPI1598041477
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameROBERT A. NUSSBAUM, MD, P.C.
Location Address6355 WALKER LN, STE 309Alexandria, VA 22310-3247
Mailing Address6355 Walker Ln, Ste 309Alexandria, VA 22310-3247 · (703) 313-8400 · Fax (703) 313-9666
Phone(703) 313-8400
Fax(703) 313-9666
Organization SubpartNo
Authorized OfficialRobert A NussbaumPresident · (703) 313-8400
Enumeration DateOctober 24, 2011
Last NPPES UpdateMarch 4, 2014
✔ NPI 1598041477 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in VA · 0101047887
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
6355 WALKER LN, Alexandria, VA 22310
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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 49D0968758

Robert A Nussbaum MD PC · Alexandria, VA
Active · expires Dec 20, 2027
CLIA Number49D0968758
Laboratory TypePhysician Office
Certificate Effective DateDecember 21, 2025
Certificate Expiration DateDecember 20, 2027
Laboratory DirectorRobert A. Nussbaum MD
Laboratory Phone(703) 313-8400
Laboratory LocationRobert A Nussbaum MD PC6355 Walker Lane - Suite 309, Alexandria, VA 22310
CLIA data matches this NPI record on: Address 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.

GWEN RENEE MORRIS MOT, OTR/L
Specialist
6355 WALKER LN, SUITE 512
ALEXANDRIA, VA 22310
Fairfax County (703) 647-3110
BESTPRACTICES, INC
Emergency Medicine
6355 WALKER LN
ALEXANDRIA, VA 22310
Fairfax County (703) 776-3111
CHELSEA KEMLAGE
Physical Therapist
6355 WALKER LN, SUITE 204
ALEXANDRIA, VA 22310
Fairfax County (703) 810-5214
MS. JOANNE F CHARLES FNP-C
Family Medicine
6355 WALKER LN, SUITE 310
ALEXANDRIA, VA 22310
Fairfax County (703) 971-8600
LAUREN M DAILEY PA-C
Physician Assistant
6355 WALKER LN, SUITE 401
ALEXANDRIA, VA 22310
Fairfax County (703) 924-2100
DR. EDWARD CHARLES RABBITT M.D.
Orthopaedic Surgery
6355 WALKER LN, SUITE 501
ALEXANDRIA, VA 22310
Fairfax County (703) 765-4321
DR. CHRISTINA STEPHANIE MICHAEL D.O.
Internal Medicine
6355 WALKER LN, SUITE 505
ALEXANDRIA, VA 22310
Fairfax County (703) 971-4444
DR. JOEL LESTER KOSLOW M.D.
Internal Medicine
6355 WALKER LN, SUITE 303
ALEXANDRIA, VA 22310
Fairfax County (703) 971-0505

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 Robert A. Nussbaum, MD, P.C.'s NPI number?

The NPI number for Robert A. Nussbaum, MD, P.C. is 1598041477. It was assigned to this organization in the NPPES registry on October 24, 2011.

Where is Robert A. Nussbaum, MD, P.C. located?

Robert A. Nussbaum, MD, P.C. is located at 6355 Walker Ln Ste 309, Alexandria, VA 22310. The listed phone number is (703) 313-8400.

What is Robert A. Nussbaum, MD, P.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Does Robert A. Nussbaum, MD, P.C. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 49D0968758) is associated with this NPI, valid through December 20, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Robert A. Nussbaum, MD, P.C. was last updated on March 4, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.