MARIANNE ELISE CROWLEY FNP-BC
NPI 1275400210
Nurse Practitioner in Leesburg, VA

Active since October 23, 2025PECOS EnrolledAccepts Medicare Assignment
19450 DEERFIELD AVENUE, SUITE 325, LEESBURG, VA 20176(703) 202-1111(571) 291-2966 Get Directions Write a Review

NPPES record last updated: June 1, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jun 1, 2026, Apr 11, 2026, Jan 3, 2026 (3 updates tracked since 2026).

About Marianne Elise Crowley Fnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIANNE ELISE CROWLEY FNP-BC (NPI 1275400210) is an individual nurse practitioner in Leesburg, Virginia, licensed in Virginia (0024194718) and active in the NPI registry since October 2025. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (2025).

NPPES Registry Identity

NPI1275400210
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARIANNE ELISE CROWLEYCredential: FNP-BC
Location Address19450 DEERFIELD AVENUE, SUITE 325Leesburg, VA 20176-8503
Mailing Address224d Cornwall St Nw Ste 403Leesburg, VA 20176-2704 · (703) 737-6010 · Fax (703) 443-8643
Fax(571) 291-2966
Sole ProprietorNo
Medical School CMSGeorge Washington University School Of MedicineGraduated 2025
Enumeration DateOctober 23, 2025
Last NPPES UpdateJune 1, 20263 updates tracked since enumeration
NPPES CertifiedJune 1, 2026
NPI 1275400210 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License Licensed in VA · 0024194718
Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

19450 DEERFIELD AVENUE, SUITE 325, Leesburg, VA 20176

Other Identifiers 2

Medicaid0024194718VA
Medicaid30018485530001VA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Marianne Elise Crowley Fnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7911491907
PECOS Enrollment IDI20260114000831
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20176 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$86.88 typical visit price
range $56.19 – $170.30
Typical copayment $21.72 (range $14.04 – $42.57)
Most-billed visit code 99203
Established Patient
$99.13 typical visit price
range $18.07 – $138.91
Typical copayment $24.78 (range $4.51 – $34.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physician Assistant
19450 DEERFIELD AVENUE, SUITE 325
LEESBURG, VA 20176
Physician Assistant
19450 DEERFIELD AVENUE, SUITE 325
LEESBURG, VA 20176
Internal Medicine (Interventional Cardiology)
19450 DEERFIELD AVENUE, SUITE 325
LEESBURG, VA 20176
Internal Medicine (Interventional Cardiology)
19450 DEERFIELD AVENUE, SUITE 325
LEESBURG, VA 20176

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marianne Crowley's NPI number?

The NPI number for Marianne Crowley is 1275400210. It was assigned to this individual provider in the NPPES registry on October 23, 2025.

Where is Marianne Crowley located?

Marianne Crowley practices at 19450 Deerfield Avenue, Suite 325, Leesburg, VA 20176. The listed phone number is (703) 202-1111.

What is Marianne Crowley's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Marianne Crowley enrolled in Medicare?

Yes. Marianne Crowley is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Marianne Crowley was last updated on June 1, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.