NPIMap

Organization Active NPI

Loudoun Medical Group, PC

Doing business as LMG Comprehensive Breast Center

  • Surgery Physician
  • Vienna, VA
National Provider Identifier
1114843596
Registry record updated Jun 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgery PhysicianTaxonomy code 208600000X
Legal business name
LOUDOUN MEDICAL GROUP, PC
Doing business as
LMG Comprehensive Breast Center
Practice address
8320 Old Courthouse Road, Suite 401
Vienna, VA 22182-3848
Phone
(703) 737-6010
NPI assigned
Jun 29, 2026
Last updated
Jun 29, 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 29, 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
Surgery Physician 208600000X NU Primary

Addresses

Primary practice location

8320 Old Courthouse Road, Suite 401
Vienna, VA 22182-3848

Mailing address

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

Other names 1

  • LMG Comprehensive Breast Center Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Loudoun Medical Group P305 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": "1782691200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1782691200000",
    "number": "1114843596",
    "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": "8320 OLD COURTHOUSE ROAD, SUITE 401",
            "city": "VIENNA",
            "state": "VA",
            "postal_code": "221823848",
            "telephone_number": "703-737-6010"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "LOUDOUN MEDICAL GROUP, PC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "LOUDOUN MEDICAL GROUP, PC",
        "enumeration_date": "2026-06-29",
        "last_updated": "2026-06-29",
        "certification_date": "2026-06-29",
        "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": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "LMG Comprehensive Breast Center",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Vienna, VA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 29, 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.