Gillian Jacob, M.D.
NPI 1285617498 · Obstetrics & Gynecology Physician · Leesburg, VA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gillian Jacob, M.D. is a Obstetrics & Gynecology Physician provider in Leesburg, VA (NPI 1285617498).
Provider details
- NPI number
- 1285617498
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 0101238135 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
14 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 14 | $83 |
Typical Medicare-allowed amounts for these services range $83–$83 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$195 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 46179 Westlake Dr Ste 240Potomac Falls, VA 20165-5874Phone: (703) 430-7770Fax: (703) 430-6480
Registry dates
- Enumerated
- 2005-11-22
- Last updated
- 2023-10-30
- Certified
- 2023-10-30
Frequently asked questions
- What is Gillian Jacob's NPI number?
- Gillian Jacob's National Provider Identifier (NPI) is 1285617498, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Jacob's specialty?
- Gillian Jacob is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Gillian Jacob located?
- Gillian Jacob's practice location on file with NPPES is 161 Fort Evans Rd Ne, Leesburg, VA 20176-3369.
- What is Gillian Jacob's phone number?
- The practice phone number listed in the NPPES registry for Gillian Jacob is (703) 777-5111.
- Does Gillian Jacob accept Medicare?
- Gillian Jacob is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gillian Jacob's NPI active?
- Yes — Gillian Jacob's NPI (1285617498) is active in the NPPES registry as of the last update on 2023-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.