Marianne Elise Crowley, FNP-BC

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

0024194718 Issued in VA

Practice address

19450 Deerfield Avenue, Suite 325
Leesburg, VA 20176-8503

Phone

(703) 202-1111

Fax

(571) 291-2966

NPI assigned

Oct 23, 2025

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

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in DC, VA2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 2

Specialty

Nurse Practitioner

Education

George Washington University School of Medicine, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Loudoun Medical Group, PCGroup PAC ID 0042119661, 272 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: marianne.crowley.1@27239.direct.athenahealth.com

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.

• Loudoun Medical Group, PC

  • Internal Medicine Physician
  • Leesburg, VA
  • NPI 1679591440
  Medicare reassignment Care Compare group NPD
• Loudoun Medical Group, PC

  • Urogynecology and Reconstructive Pelvic Surgery (Urology) Physician
  • Reston, VA
  • NPI 1407908817

  DC

  Medicare reassignment
• Loudoun Medical Group, PC

  • Vascular Surgery Physician
  • Reston, VA
  • NPI 1588376321
  NPD

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

{
    "created_epoch": "1761177600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780272000000",
    "number": "1275400210",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "224D CORNWALL ST NW STE 403",
            "city": "LEESBURG",
            "state": "VA",
            "postal_code": "201762704",
            "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": "19450 DEERFIELD AVENUE, SUITE 325",
            "city": "LEESBURG",
            "state": "VA",
            "postal_code": "201768503",
            "telephone_number": "703-202-1111",
            "fax_number": "571-291-2966"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CROWLEY",
        "first_name": "MARIANNE",
        "middle_name": "ELISE",
        "credential": "FNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-10-23",
        "last_updated": "2026-06-01",
        "certification_date": "2026-06-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "VA",
            "license": "0024194718",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0024194718",
            "state": "VA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "30018485530001",
            "state": "VA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Cecil Bernard Cross, MD
• Dawn Crothers, RN
• Catherine Theresa Crowe, MA, LPC
• Anthony Edward Crowley, MD
• Hilary J. Crowley, PH.D.
• Minnie Sheila L Cruz-Tolentino, MD
• Csssdwc
• Maria McMurray Cunningham
• Curis Consulting Group LLC
• Carol Anne Currier, MD

• Nurse Practitioner in Leesburg, VA
• Providers in Leesburg, VA by specialty
• Nurse Practitioner in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 1, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.