Gillian Harrison, MD - Medicare Neurology in Alexandria, VA

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Gillian Harrison, MD is a medicare enrolled "Neurological Surgery" physician in Alexandria, Virginia. She went to University Of Pittsburgh School Of Medicine and graduated in 2013 and has 12 years of diverse experience with area of expertise as Neurology. She is a member of the group practice Inova Health Care Services, Inova Health Care Services and her current practice location is 4320 Seminary Rd, Alexandria, Virginia. You can reach out to her office (for appointments etc.) via phone at (703) 504-3000.

Gillian Harrison is licensed to practice in Virginia (license number 0101277030) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1528405180.

Contact Information

Gillian Harrison, MD
4320 Seminary Rd,
Alexandria, VA 22304-1535
(703) 504-3000
(703) 504-3388

Map and Direction




Physician's Profile

Full NameGillian Harrison
GenderFemale
SpecialityNeurology
Experience12 Years
Location4320 Seminary Rd, Alexandria, Virginia
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Gillian Harrison attended and graduated from University Of Pittsburgh School Of Medicine in 2013
  NPI Data:
  • NPI Number: 1528405180
  • Provider Enumeration Date: 05/22/2013
  • Last Update Date: 01/14/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 8123366655
  • Enrollment ID: I20230217000358

Medical Identifiers

Medical identifiers for Gillian Harrison such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1528405180NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207T00000XNeurological Surgery 76055 (Wisconsin)Secondary
207T00000XNeurological Surgery 0101277030 (Virginia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Inova Fairfax HospitalFalls church, VAHospital
Inova Alexandria HospitalAlexandria, VAHospital
Inova Mount Vernon HospitalAlexandria, VAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Inova Health Care Services24663510931588
Inova Health Care Services24663510931588

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Gillian Harrison allows following entities to bill medicare on her behalf.
Entity NameInova Health Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952320061
PECOS PAC ID: 2466351093
Enrollment ID: O20040102000644
Entity NameInova Health Care Services
Entity TypePart B Supplier - Hospital Department(s)
Entity IdentifiersNPI Number: 1538870191
PECOS PAC ID: 2466351093
Enrollment ID: O20230206002835

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Gillian Harrison is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Gillian Harrison, MD
4320 Seminary Rd,
Alexandria, VA 22304-1535

Ph: (703) 504-3000		Gillian Harrison, MD
4320 Seminary Rd,
Alexandria, VA 22304-1535

Ph: (703) 504-3000

Reviews and Comments


Neurological Surgery Doctors in Alexandria, VA

Dr. Andrew A Fanous, M.D.
Neurological Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 1500 N Beauregard St Ste 300, Alexandria, VA 22311
Phone: 571-472-4100    Fax: 571-472-4101

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.