NPIMap

Organization Active NPI

Loudoun Medical Group, PC

Doing business as All About Women OB/GYN

  • Obstetrics & Gynecology Physician
  • Reston, VA
National Provider Identifier
1154063659
Registry record updated Jul 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
Legal business name
LOUDOUN MEDICAL GROUP, PC
Doing business as
All About Women OB/GYN
Practice address
1860 Town Center Drive, Suite 140
Reston, VA 20190-5898
Phone
(703) 437-0001
Fax
(703) 787-5739
NPI assigned
Apr 13, 2022
Last updated
Jul 23, 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 Jul 23, 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
Obstetrics & Gynecology Physician 207V00000X NU Primary

Addresses

Primary practice location

1860 Town Center Drive, Suite 140
Reston, VA 20190-5898

Mailing address

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

Other names 1

  • All About Women OB/GYN Doing business as

National Provider Directory

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

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": "1649808000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1784764800000",
    "number": "1154063659",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "224-D CORNWALL STREET, NW, SUITE 403",
            "city": "LEESBURG",
            "state": "VA",
            "postal_code": "20176",
            "telephone_number": "703-737-6010",
            "fax_number": "703-443-8643"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1860 TOWN CENTER DRIVE, SUITE 140",
            "city": "RESTON",
            "state": "VA",
            "postal_code": "201905898",
            "telephone_number": "703-437-0001",
            "fax_number": "703-787-5739"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "LOUDOUN MEDICAL GROUP, PC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "LOUDOUN MEDICAL GROUP, PC",
        "enumeration_date": "2022-04-13",
        "last_updated": "2026-07-23",
        "certification_date": "2026-07-23",
        "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": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "All About Women OB/GYN",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "All About Women OB/GYN",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Reston, VA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 23, 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.