Individual provider Active NPI

Giuliana Klesius, RDN

  • Registered Dietitian
  • Fairfax, VA
National Provider Identifier
1598664658
Registry record updated Nov 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Registered DietitianTaxonomy code 133V00000X
Practice address
8613 Route 29
Fairfax, VA 22031-2171
Phone
(571) 350-8400
NPI assigned
Nov 4, 2026
Last updated
Nov 4, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 4, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Oncology Nutrition Registered Dietitian 133VN1301X VA
Registered Dietitian 133V00000X VA Primary

Addresses

Primary practice location

8613 Route 29
Fairfax, VA 22031-2171

Mailing address

8613 Route 29
Fairfax, VA 22031-2171
Phone (571) 350-8400

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

NPI Registry JSON

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

{
    "created_epoch": "1793750400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1793750400000",
    "number": "1598664658",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8613 ROUTE 29",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220312171",
            "telephone_number": "571-350-8400"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8613 ROUTE 29",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220312171",
            "telephone_number": "571-350-8400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KLESIUS",
        "first_name": "GIULIANA",
        "credential": "RDN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-11-04",
        "last_updated": "2026-11-04",
        "certification_date": "2026-11-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133VN1301X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered, Nutrition, Oncology",
            "state": "VA",
            "license": null,
            "primary": false
        },
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "VA",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fairfax, VA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.