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HILARY NEWGEN M.D.
NPI 1881868123
Psychiatry & Neurology - Neurology in Fairfax, VA

Active since April 17, 2008PECOS EnrolledAccepts Medicare Assignment
12011 LEE-JACKSON MEMORIAL HIGHWAY, PENDERBROOK MEDICAL CENTER, FAIRFAX, VA 22033(703) 383-5400(703) 383-5558 Get Directions Write a Review

NPPES record last updated: June 15, 2021. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Hilary Newgen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HILARY NEWGEN M.D. (NPI 1881868123) is an individual neurology provider in Fairfax, Virginia, licensed in Virginia (0101244856) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (2004).

NPPES Registry Identity

NPI1881868123
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameHILARY NEWGENCredential: M.D.
Location Address12011 LEE-JACKSON MEMORIAL HIGHWAY, PENDERBROOK MEDICAL CENTERFairfax, VA 22033-3310
Mailing Address2101 E Jefferson St, Kaiser Permanente Medicare EnrollmentRockville, MD 20852-4908 · (301) 816-2424
Phone(703) 383-5400
Fax(703) 383-5558
Sole ProprietorNo
Medical School CMSGeorge Washington University School Of MedicineGraduated 2004
Enumeration DateApril 17, 2008
Last NPPES UpdateJune 15, 2021
NPPES CertifiedJune 15, 2021
✔ NPI 1881868123 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
Licenses✔ Licensed in VA · 0101244856✔ Licensed in DC · MD037990
Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

12011 LEE-JACKSON MEMORIAL HIGHWAY, Fairfax, VA 22033
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Other Names 1

Former Name (1)Hilary Koyanagi Md

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Hilary Newgen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3971641648
PECOS Enrollment IDI20091118000082, I20250910002084
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit, 30-39 minutes 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. PIERRE P WOLFE M.D.
Internal Medicine (Pulmonary Disease)
12011 LEE-JACKSON MEMORIAL HIGHWAY, 2ND FLOOR
FAIRFAX, VA 22033
Fairfax County (703) 383-5400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Hilary Newgen's NPI number?

The NPI number for Hilary Newgen is 1881868123. It was assigned to this individual provider in the NPPES registry on April 17, 2008. The provider is also known as Hilary Koyanagi MD.

Where is Hilary Newgen located?

Hilary Newgen practices at 12011 Lee-Jackson Memorial Highway Penderbrook Medical Center, Fairfax, VA 22033. The listed phone number is (703) 383-5400.

What is Hilary Newgen's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Hilary Newgen enrolled in Medicare?

Yes. Hilary Newgen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Hilary Newgen was last updated on June 15, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.