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Dr. Gillian Althea Jacob, M.D.

Obstetrics & Gynecology Physician in Leesburg, VA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1285617498

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Registry record

Entity type Individual (Type 1)
Name Dr. Gillian Althea Jacob
Credential M.D.
Sex Female
Practice address 161 Fort Evans Rd Ne, Suite 320, Leesburg, VA, 20176
Phone (703) 777-5111
Fax (703) 777-8465
Enumeration date Nov 22, 2005
Last updated in NPPES Oct 30, 2023

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 0101238135 (VA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

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Frequently asked questions

What is the NPI number for Gillian Jacob?
The National Provider Identifier (NPI) for Gillian Jacob is 1285617498, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gillian Jacob practice?
The practice location on file with NPPES is in Leesburg, VA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-30.