Marianne Crowley, FNP-BC
NPI 1275400210 · Nurse Practitioner · Leesburg, VA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marianne Crowley, FNP-BC is a Nurse Practitioner provider in Leesburg, VA (NPI 1275400210).
Provider details
- NPI number
- 1275400210
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 0024194718 (VA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-10-23
- Last updated
- 2026-06-01
- Certified
- 2026-06-01
Frequently asked questions
- What is Marianne Crowley's NPI number?
- Marianne Crowley's National Provider Identifier (NPI) is 1275400210, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianne Crowley's specialty?
- Marianne Crowley is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marianne Crowley located?
- Marianne Crowley's practice location on file with NPPES is 19450 Deerfield Avenue, Suite 325, Leesburg, VA 20176-8503.
- What is Marianne Crowley's phone number?
- The practice phone number listed in the NPPES registry for Marianne Crowley is (703) 202-1111.
- Does Marianne Crowley accept Medicare?
- Marianne Crowley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marianne Crowley's NPI active?
- Yes — Marianne Crowley's NPI (1275400210) is active in the NPPES registry as of the last update on 2026-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.