Gastroenterology Associates of Northern Virginia, LLC

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

Legal business name

GASTROENTEROLOGY ASSOCIATES OF NORTHERN VIRGINIA, LLC

Practice address

3700 Joseph Siewick Dr.
Suite 308
Fairfax, VA 22033-1739

Phone

(703) 716-8700

Fax

(703) 716-8703

NPI assigned

May 4, 2006

Last updated

May 15, 2025By the provider in NPPES

Organization subpart

No

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Alan Oliver, CEO

Title

Ceo

Phone

(786) 530-3820

Specialties & licenses 2

Addresses

Other identifiers 5

Medicare fee-for-service enrollment

Enrolled in DC, VA2 enrollments

Enrollment records 2

Locations

Subparts reporting this organization as parent 3

Organizations that report themselves as subparts in NPPES and name this organization, in the same state, as their parent.

• Gastroenterology Associates of Northern Virginia, LLC

  • Gastroenterology Physician
  • Fairfax, VA
  • NPI 1053096461
  NPPES parent name
• Gastroenterology Associates of Northern Virginia, LLC

  • Ambulatory Surgical Clinic/Center
  • Fairfax, VA
  • NPI 1578341780
  NPPES parent name
• Gastroenterology Associates of Northern Virginia, LLC

  • Non-Pharmacy Dispensing Site
  • Fairfax, VA
  • NPI 1629758180
  NPPES parent name

Practitioners 168

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Mahmood Abedi, MD

  • Gastroenterology Physician
  • Fairfax, VA
  • NPI 1649255233

  DC

  Medicare reassignment Care Compare group NPD
• Tonya Lynn Adams, M.D.

  • Gastroenterology Physician
  • Fairfax, VA
  • NPI 1861472862

  DC

  Medicare reassignment Care Compare group NPD
• Alan F Ansher, MD

  • Gastroenterology Physician
  • Alexandria, VA
  • NPI 1497800841

  DC

  Medicare reassignment Care Compare group NPD
• Andrew Axelrad, M.D.

  • Gastroenterology Physician
  • Reston, VA
  • NPI 1073579876

  DC

  Medicare reassignment Care Compare group NPD
• David Howard Balaban, MD

  • Specialist
  • Charlottesville, VA
  • NPI 1225035959

  DC

  Medicare reassignment Care Compare group NPD
• Nader H Balba, MD

  • Gastroenterology Physician
  • Fairfax, VA
  • NPI 1013949254

  DC

  Medicare reassignment Care Compare group NPD
• Beth A Banker, FNP

  • Family Nurse Practitioner
  • Alexandria, VA
  • NPI 1538116405

  DC

  Medicare reassignment Care Compare group NPD
• Brian Christopher Benson, M.D.

  • Gastroenterology Physician
  • Fort Belvoir, VA
  • NPI 1740574870

  DC

  Medicare reassignment Care Compare group NPD
• Liliana Elizabeth Bonilla Hernandez, FNP-BC

  • Family Nurse Practitioner
  • Reston, VA
  • NPI 1912857947

  DC

  Medicare reassignment Care Compare group NPD
• Deborah Ann Brauer, MD

  • Internal Medicine Physician
  • Alexandria, VA
  • NPI 1700031481

  DC, Gastroenterology

  Medicare reassignment Care Compare group NPD
• Michael C. Brown, M.D.

  • Gastroenterology Physician
  • Woodbridge, VA
  • NPI 1861488637

  DC

  Medicare reassignment Care Compare group NPD
• Mindy Chen, MD

  • Gastroenterology Physician
  • Fairfax, VA
  • NPI 1750840831

  DC

  Medicare reassignment Care Compare group NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1146700800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1747267200000",
    "number": "1205884368",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3700 JOSEPH SIEWICK DR.",
            "address_2": "SUITE 308",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220331739",
            "telephone_number": "703-716-8700",
            "fax_number": "703-716-8703"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3700 JOSEPH SIEWICK DR.",
            "address_2": "SUITE 308",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220331739",
            "telephone_number": "703-716-8700",
            "fax_number": "703-716-8703"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GASTROENTEROLOGY ASSOCIATES OF NORTHERN VIRGINIA, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-05-04",
        "last_updated": "2025-05-15",
        "certification_date": "2025-05-15",
        "status": "A",
        "authorized_official_last_name": "OLIVER",
        "authorized_official_first_name": "ALAN",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "786-530-3820",
        "authorized_official_credential": "CEO"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "2080P0206X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Gastroenterology",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3810003805",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM BCBS",
            "identifier": "178704",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "KAISER",
            "identifier": "104411",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "CD8396",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CAREFIRST BCBS",
            "identifier": "7916",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sandra Marie Garza, LCSW
• Greg E Gaski, MD
• Stephen Gassaway
• Gastro Virginia LLC
• Gastroenterology Associates of Northern Virginia, LLC
• Gastroenterology Associates of Northern Virginia, LLC
• Gastroenterology Associates of Northern Virginia, LLC
• Gastroenterology Consultants of Northern Virginia PLC
• Gastroenteroloy Associates of Northern Virginia, LTD.
• Gastrointestinal Medicine Associates

• Gastroenterology Physician in Fairfax, VA
• Providers in Fairfax, VA by specialty
• Gastroenterology Physician in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 15, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.