William C Kirby, MD - Medicare Pediatrics in Fairfax, VA

William C Kirby, MD is a medicare enrolled "Pediatrics - Pediatric Cardiology" physician in Fairfax, Virginia. His current practice location is 8318 Arlington Blvd, Suite 250, Fairfax, Virginia. You can reach out to his office (for appointments etc.) via phone at (703) 876-8410.

William C Kirby is licensed to practice in Virginia (license number 0101039869) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1528021755.

Contact Information

William C Kirby, MD
8318 Arlington Blvd, Suite 250,
Fairfax, VA 22031-5218
(703) 876-8410
(703) 876-8417

Map and Direction




Physician's Profile

Full NameWilliam C Kirby
GenderMale
SpecialityPediatrics - Pediatric Cardiology
Location8318 Arlington Blvd, Fairfax, Virginia
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1528021755
  • Provider Enumeration Date: 04/10/2006
  • Last Update Date: 07/14/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 3274527106
  • Enrollment ID: I20040413000766

Medical Identifiers

Medical identifiers for William C Kirby such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1528021755NPI-NPPES
006707092MedicaidVA
311641700MedicaidMD

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2080P0202XPediatrics - Pediatric Cardiology D34047 (Maryland)Secondary
2080P0202XPediatrics - Pediatric Cardiology MD10635 (District Of Columbia)Secondary
2080P0202XPediatrics - Pediatric Cardiology 0101039869 (Virginia)Primary

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. William C Kirby allows following entities to bill medicare on his 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 NamePediatrix Medical Group Of The Mid-atlantic Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205859691
PECOS PAC ID: 9739102765
Enrollment ID: O20060117000344

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. William C Kirby 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
William C Kirby, MD
8318 Arlington Blvd, Suite 250,
Fairfax, VA 22031-5218

Ph: (703) 876-8410
William C Kirby, MD
8318 Arlington Blvd, Suite 250,
Fairfax, VA 22031-5218

Ph: (703) 876-8410

Reviews and Comments


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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).

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