Marietta F Grundlehner, MD

Primary specialty

SpecialistTaxonomy code 174400000X

License

0101032626 Issued in VA

Practice address

3700 Joseph Siewick Dr
#305
Fairfax, VA 22033-1744

Phone

(703) 476-1740

Fax

(703) 476-6432

NPI assigned

Jul 8, 2005

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Nephrology Associates of Northern Virginia, Inc

  • Nephrology Physician
  • Fairfax, VA
  • NPI 1174541049
  NPD (past)

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

{
    "created_epoch": "1120780800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1740288315",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3700 JOSEPH SIEWICK DR",
            "address_2": "#305",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220331744",
            "telephone_number": "703-476-1740",
            "fax_number": "703-476-6432"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3700 JOSEPH SIEWICK DR",
            "address_2": "#305",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220331744",
            "telephone_number": "703-476-1740",
            "fax_number": "703-476-6432"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRUNDLEHNER",
        "first_name": "MARIETTA",
        "middle_name": "F",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-07-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "VA",
            "license": "0101032626",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Morgan R Groover, DPT
• Celia Grove, MT-BC
• Wanda Edwards Grove, PT
• Growing Hearts Pediatrics
• Kathryn Grumbach, MD
• Tracey Guard, LPC, CSOTP
• Guardians Home Care LLC
• Augustin Guech
• Roxana Guerra Culquicondor
• Natalie Jean Gugino, M.D.

• Specialist in Fairfax, VA
• Providers in Fairfax, VA by specialty
• Specialist in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.