Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jessica Gilleo
Nurse Practitioner in Ashburn, VA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558944959
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Registry record
Entity type Individual (Type 1)
Name Jessica Gilleo
Sex Female
Practice address 41816 Fenway Cir, Ashburn, VA, 20148
Phone (703) 689-9000
Enumeration date May 3, 2021
Last updated in NPPES Jun 3, 2021
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024181247 (VA) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Jessica Gilleo?
Jessica Gilleo is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Joanna Bock Internal Medicine Physician · Ashburn, VA NPI 1780728188 Amr Behiri Internal Medicine Physician · Ashburn, VA NPI 1154588580 Virginia Internal Medicine Inc Internal Medicine Physician · Ashburn, VA NPI 1740525245 Noelle Pierson Family Nurse Practitioner · Ashburn, VA NPI 1982003091 Sarah Brown Family Nurse Practitioner · Ashburn, VA NPI 1538537196 Maria Gracia Macdiarmid Family Nurse Practitioner · Ashburn, VA NPI 1407217979 Virginia Geriatrics, PC Geriatric Medicine (Internal Medicine) Physician · Ashburn, VA NPI 1346750320 Hayley Arcadipane Family Nurse Practitioner · Ashburn, VA NPI 1982227724
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-03.