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GASTROENTEROLOGY ASSOCIATES OF NORTHERN VIRGINIA, LLC
NPI 1205884368
Internal Medicine - Gastroenterology in Fairfax, VA

Active since May 04, 2006
3700 JOSEPH SIEWICK DR., SUITE 308, FAIRFAX, VA 22033(703) 716-8700(703) 716-8703 Get Directions Write a Review

NPPES record last updated: May 15, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 15, 2025, Feb 13, 2025, Dec 20, 2019 and 1 more (4 updates tracked since 2019).

About Gastroenterology Associates Of Northern Virginia, Llc NPPES

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

GASTROENTEROLOGY ASSOCIATES OF NORTHERN VIRGINIA, LLC (NPI 1205884368) is a healthcare organization registered as a gastroenterology in Fairfax, Virginia and active in the NPI registry since May 2006. The organization lists Alan Oliver, Ceo, as its authorized official.

NPPES Registry Identity

NPI1205884368
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameGASTROENTEROLOGY ASSOCIATES OF NORTHERN VIRGINIA, LLC
Location Address3700 JOSEPH SIEWICK DR., SUITE 308Fairfax, VA 22033-1739
Mailing Address3700 Joseph Siewick Dr., Suite 308Fairfax, VA 22033-1739 · (703) 716-8700 · Fax (703) 716-8703
Phone(703) 716-8700
Fax(703) 716-8703
Organization SubpartNo
Authorized OfficialAlan OliverCeo · (786) 530-3820
Enumeration DateMay 4, 2006
Last NPPES UpdateMay 15, 20254 updates tracked since enumeration
NPPES CertifiedMay 15, 2025
✔ NPI 1205884368 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
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.
Also ListedPediatrics · Pediatric GastroenterologyTaxonomy 2080P0206X
3700 JOSEPH SIEWICK DR., Fairfax, VA 22033
Open in Google Maps ↗

Other Identifiers 5

OtherCD8396VA · Railroad Medicare
Medicaid3810003805VA
Other178704VA · Anthem Bcbs
Other104411Kaiser
Other7916Carefirst Bcbs

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gastroenterology Associates Of Northern Virginia, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

110

Medicare enrollment records show 110 clinicians reassign Medicare billing to Gastroenterology Associates Of Northern Virginia, LLC, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 39 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 6

Gastroenterology65
Nurse Practitioner30
Pathology5
Internal Medicine4
Interventional Radiology4
Diagnostic Radiology2

Nearest to this location (20)

See all 110
Waseem Aziz, MD
Gastroenterology
NPI 1023038270
3700 JOSEPH SIEWICK DR SUITE 401
Fairfax, VA 22033
(703) 281-1023
✔ PECOS✔ Accepts MedicareSame address
Felice Banson, MD
Gastroenterology
NPI 1962407924
3700 JOSEPH SIEWICK DR STE 308
Fairfax, VA 22033
(703) 698-8960
✔ PECOSSame address
Christopher Chhoun, DO
Gastroenterology
NPI 1689235921
3700 JOSEPH SIEWICK DR STE 308
Fairfax, VA 22033
(703) 698-8960
✔ PECOS✔ Accepts MedicareSame address
Michael Garone, M.D.
Gastroenterology
NPI 1255311189
3700 JOSEPH SIEWICK DR SUITE 308
Fairfax, VA 22033
(703) 698-8960
✔ PECOS✔ Accepts MedicareSame address
Peter Scudera, M.D.
Gastroenterology
NPI 1063488575
3700 JOSEPH SIEWICK DR SUITE 308
Fairfax, VA 22033
(703) 698-8960
✔ PECOSSame address
Jeremias Tan, M.D.
Internal Medicine
NPI 1699723213
3700 JOSEPH SIEWICK DR STE 308
Fairfax, VA 22033
(703) 698-8960
✔ PECOS✔ Accepts MedicareSame address
Eduardo Noguera, M.D.
Gastroenterology
NPI 1295791176
11440 COMMERCE PARK DR LL4
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Andrew Axelrad, M.D.
Gastroenterology
NPI 1073579876
11440 COMMERCE PARK DR LL4
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Alan Plotner, M.D.
Gastroenterology
NPI 1114983004
11440 COMMERCE PARK DR LL4
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Anita Wolke, M.D.
Gastroenterology
NPI 1215993068
11440 COMMERCE PARK DR LL4
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Emil Valle, M.D.
Gastroenterology
NPI 1497711238
11440 COMMERCE PARK DR LL4
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Shilen Lakhani, M.D.
Gastroenterology
NPI 1871503599
1939 ROLAND CLARKE PL STE 200
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Minal Patel, MD
Gastroenterology
NPI 1588848089
1939 ROLAND CLARKE PL STE 200
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Daniel Rausa, D.O
Gastroenterology
NPI 1982097648
1939 ROLAND CLARKE PL STE 200
Reston, VA 20191
(703) 766-2650
✔ PECOS✔ Accepts Medicare4.9 mi
Liliana Bonilla Hernandez, FNP-BC
Nurse Practitioner
NPI 1912857947
1939 ROLAND CLARKE PL STE 200
Reston, VA 20191
(703) 435-3366
✔ PECOS✔ Accepts Medicare4.9 mi
Rabelle Siddiki, FNP-BC
Nurse Practitioner
NPI 1912764846
1939 ROLAND CLARKE PL STE 200
Reston, VA 20191
(703) 435-3366
✔ PECOS✔ Accepts Medicare4.9 mi
Alex Pavidapha, M.D
Interventional Radiology
NPI 1053799585
1801 ROBERT FULTON DRIVE, SUITE 510
Reston, VA 20191
(703) 783-5355
✔ PECOS✔ Accepts Medicare5.1 mi
Rachel Piechowiak, D.O.
Diagnostic Radiology
NPI 1679867212
1801 ROBERT FULTON DRIVE, SUITE 510
Reston, VA 20191
(703) 783-5355
✔ PECOS✔ Accepts Medicare5.1 mi
Mahmood Abedi, MD
Gastroenterology
NPI 1649255233
3028 JAVIER RD STE 500
Fairfax, VA 22031
(703) 698-8960
✔ PECOS✔ Accepts Medicare8.0 mi
Mindy Chen, MD
Internal Medicine
NPI 1750840831
3028 JAVIER RD STE 300
Fairfax, VA 22031
(036) 988-9607
✔ PECOS✔ Accepts Medicare8.0 mi
See all 110 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 Gastroenterology Associates Of Northern Virginia, LLC's NPI number?

The NPI number for Gastroenterology Associates Of Northern Virginia, LLC is 1205884368. It was assigned to this organization in the NPPES registry on May 4, 2006.

Where is Gastroenterology Associates Of Northern Virginia, LLC located?

Gastroenterology Associates Of Northern Virginia, LLC is located at 3700 Joseph Siewick Dr. Suite 308, Fairfax, VA 22033. The listed phone number is (703) 716-8700.

What is Gastroenterology Associates Of Northern Virginia, LLC's specialty?

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

Is Gastroenterology Associates Of Northern Virginia, LLC enrolled in Medicare?

Yes. Gastroenterology Associates Of Northern Virginia, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gastroenterology Associates Of Northern Virginia, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 110 clinicians in 6 Medicare specialties reassign their Medicare billing to Gastroenterology Associates Of Northern Virginia, LLC. 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 Gastroenterology (65), Nurse Practitioner (30) and Pathology (5). Of these, 6 practice at this address and 39 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 Gastroenterology Associates Of Northern Virginia, LLC was last updated on May 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.