Hilary Newgen, M.D.
NPI 1881868123 · Neurology Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hilary Newgen, M.D. is a Neurology Physician provider in Fairfax, VA (NPI 1881868123).
Provider details
- NPI number
- 1881868123
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD037990 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
16 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 16 | $125 |
Typical Medicare-allowed amounts for these services range $125–$125 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levetiracetam | 142 | 43 |
| Donepezil Hcl | 125 | 45 |
| Gabapentin | 110 | 36 |
| Memantine Hcl | 102 | 30 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 92 | 28 |
| Pregabalin | 59 | 16 |
| Duloxetine Hcl | 52 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-17
- Last updated
- 2021-06-15
- Certified
- 2021-06-15
Frequently asked questions
- What is Hilary Newgen's NPI number?
- Hilary Newgen's National Provider Identifier (NPI) is 1881868123, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hilary Newgen's specialty?
- Hilary Newgen is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Hilary Newgen located?
- Hilary Newgen's practice location on file with NPPES is 12011 Lee-Jackson Memorial Highway, Fairfax, VA 22033-3310.
- What is Hilary Newgen's phone number?
- The practice phone number listed in the NPPES registry for Hilary Newgen is (703) 383-5400.
- Does Hilary Newgen accept Medicare?
- Hilary Newgen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hilary Newgen's NPI active?
- Yes — Hilary Newgen's NPI (1881868123) is active in the NPPES registry as of the last update on 2021-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.