NPIMap

Organization Active NPI

Loudoun Medical Group, PC

Doing business as LMG Family Medicine

  • Family Medicine Physician
  • Dulles, VA
National Provider Identifier
1730013558
Registry record updated Jun 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
Legal business name
LOUDOUN MEDICAL GROUP, PC
Doing business as
LMG Family Medicine
Practice address
24430 Stone Springs Blvd.
Suite 100B
Dulles, VA 20166-2269
Phone
(703) 430-7090
Fax
(703) 444-9878
NPI assigned
Jun 9, 2026
Last updated
Jun 9, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
LOUDOUN MEDICAL GROUP, PCAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Jun 9, 2026

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

Authorized official

Name
Mary Beth Tamasy
Title
Ceo
Phone
(703) 737-6010

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X NU Primary

Addresses

Primary practice location

24430 Stone Springs Blvd.
Suite 100B
Dulles, VA 20166-2269

Mailing address

224D Cornwall Street, NW, Ste 403
Leesburg, VA 20176-2704
Phone (703) 737-6010

Other names 1

  • LMG Family Medicine Doing business as

National Provider Directory

National Provider Directory
Tax ID family
John M Archer MD305 organizations share this tax ID, including this one

Organizations with this tax ID in the same state 24

This tax ID family is large, so up to 24 of its organizations in the same state are linked here.

View all 24

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

NPI Registry JSON

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

{
    "created_epoch": "1780963200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1780963200000",
    "number": "1730013558",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "224D CORNWALL STREET, NW, STE 403",
            "city": "LEESBURG",
            "state": "VA",
            "postal_code": "201762704",
            "telephone_number": "703-737-6010"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "24430 STONE SPRINGS BLVD.",
            "address_2": "SUITE 100B",
            "city": "DULLES",
            "state": "VA",
            "postal_code": "201662269",
            "telephone_number": "703-430-7090",
            "fax_number": "703-444-9878"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "LOUDOUN MEDICAL GROUP, PC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "LOUDOUN MEDICAL GROUP, PC",
        "enumeration_date": "2026-06-09",
        "last_updated": "2026-06-09",
        "certification_date": "2026-06-09",
        "status": "A",
        "authorized_official_last_name": "TAMASY",
        "authorized_official_first_name": "MARY BETH",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "703-737-6010"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "LMG Family Medicine",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Dulles, VA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 9, 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.