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GILLIAN HARRISON MD
NPI 1528405180
Neurological Surgery in Alexandria, VA

Active since May 22, 2013PECOS EnrolledAccepts Medicare Assignment
81.28/100
CMS Quality Rating
4320 SEMINARY RD, ALEXANDRIA, VA 22304(703) 504-3000(703) 504-3388 Get Directions Write a Review

NPPES record last updated: January 14, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 14, 2023, Sep 20, 2021, Feb 22, 2021 and 1 more (4 updates tracked since 2020).

About Gillian Harrison Md NPPES

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

GILLIAN HARRISON MD (NPI 1528405180) is an individual neurological surgery provider in Alexandria, Virginia, licensed in Virginia (0101277030) and active in the NPI registry since May 2013. She is enrolled in Medicare PECOS, is affiliated with Inova Alexandria Hospital, and is a graduate of University Of Pittsburgh School Of Medicine (2013).

NPPES Registry Identity

NPI1528405180
Entity TypeIndividualFemale
Primary Taxonomy207T00000X
Provider Legal NameGILLIAN HARRISONCredential: MD
Location Address4320 SEMINARY RDAlexandria, VA 22304-1535
Mailing Address4320 Seminary RdAlexandria, VA 22304-1535 · (703) 504-3000 · Fax (703) 504-3388
Phone(703) 504-3000
Fax(703) 504-3388
Sole ProprietorNo
Medical School CMSUniversity Of Pittsburgh School Of MedicineGraduated 2013
Enumeration DateMay 22, 2013
Last NPPES UpdateJanuary 14, 20234 updates tracked since enumeration
NPPES CertifiedJanuary 14, 2023
✔ NPI 1528405180 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
Licenses✔ Licensed in VA · 0101277030✔ Licensed in WI · 76055
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
4320 SEMINARY RD, Alexandria, VA 22304
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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

Gillian Harrison Md 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 ID8123366655
PECOS Enrollment IDI20230217000358, I20230217000411
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 7

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
172 services167 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
161 services91 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
124 services98 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 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.
118 services92 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
29 services26 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
20 services20 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Inova Alexandria Hospital

Acute Care Hospitals · Alexandria, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490040
Location4320 Seminary RdAlexandria, VA 22304 · Alexandria City County
Emergency services Birthing friendly

Inova Fairfax Hospital

Acute Care Hospitals · Falls Church, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490063
Location3300 Gallows RoadFalls Church, VA 22042 · Fairfax County
Emergency services Birthing friendly

Inova Mount Vernon Hospital

Acute Care Hospitals · Alexandria, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490122
Location2501 Parkers LaneAlexandria, VA 22306 · Fairfax County
Emergency services

Uva Health Haymarket Medical Center

Acute Care Hospitals · Haymarket, VA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490144
Location15225 Healthcote BoulevardHaymarket, VA 20169 · Prince William County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22304 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
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.77
Promoting Interoperability100
Improvement Activities40
Cost66.84

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by Chrysta ***** October 30, 2023

5/5
My husband and I met with Dr. Harrison to discuss his medical issues and she took at least 2 hours with us at the initial appointment to review his MRI, chief complaints and to evaluate him. She squeezed us into her surgical schedule later that same week for this urgent surgery and very thoughtfully explained the spine, the causes of his issues, and the corrective measures. HIGHLY recommend!
Provider 5/5 Office Staff 5/5
Visited this provider? Share your experience.

Other Providers at the Same Location NPPES 20

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

DR. MADHUSUDANAN SRAMBICKAL RAMASWAMY M.D., M.S.
Internal Medicine (Critical Care Medicine)
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3000
ASSOCIATION OF ALEXANDRIA RADIOLOGISTS, P.C.
Radiology (Diagnostic Radiology)
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3000
DR. MICHAEL ANTHONY HOLLIDAY M.D.
Pediatrics (Neonatal-Perinatal Medicine)
4320 SEMINARY RD, SUITE 3000
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3069
MR. VALENTINE JEAN TOUSSAINT NILES CRNA
Nurse Anesthetist, Certified Registered
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3521
MR. RODOLFO AMA ALORA JR. PT
Physical Therapist
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3167
ABDUL RAHMAN M.D
Internal Medicine (Critical Care Medicine)
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3000
LIANA E MATEVOSIAN NP
Nurse Practitioner
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3000
DR. BROOKE LANELL GRAY D.O.
Internal Medicine (Critical Care Medicine)
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Alexandria City (703) 504-3000

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 Gillian Harrison's NPI number?

The NPI number for Gillian Harrison is 1528405180. It was assigned to this individual provider in the NPPES registry on May 22, 2013.

Where is Gillian Harrison located?

Gillian Harrison practices at 4320 Seminary Rd, Alexandria, VA 22304. The listed phone number is (703) 504-3000.

What is Gillian Harrison's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Gillian Harrison enrolled in Medicare?

Yes. Gillian Harrison 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.

Is Gillian Harrison affiliated with any hospitals?

According to CMS data, Gillian Harrison is affiliated with Inova Alexandria Hospital, Inova Fairfax Hospital, Inova Mount Vernon Hospital and Uva Health Haymarket Medical Center.

When was this NPI record last updated?

The NPPES record for Gillian Harrison was last updated on January 14, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.