Karim A Diab, MD - Medicare Pediatrics in Fairfax, VA

Karim A Diab, MD is a medicare enrolled "Pediatrics - Pediatric Cardiology" physician in Fairfax, Virginia. His current practice location is 8260 Willow Oaks Corporate Dr Ste 400, Fairfax, Virginia. You can reach out to his office (for appointments etc.) via phone at (703) 573-0504.

Karim A Diab is licensed to practice in Virginia (license number 0101273321) 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 1699978916.

Contact Information

Karim A Diab, MD
8260 Willow Oaks Corporate Dr Ste 400,
Fairfax, VA 22031-4513
(703) 573-0504
(703) 573-4856

Map and Direction




Physician's Profile

Full NameKarim A Diab
GenderMale
SpecialityPediatrics - Pediatric Cardiology
Location8260 Willow Oaks Corporate Dr Ste 400, Fairfax, Virginia
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1699978916
  • Provider Enumeration Date: 06/06/2007
  • Last Update Date: 04/29/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 2466543293
  • Enrollment ID: I20130815000794

Medical Identifiers

Medical identifiers for Karim A Diab such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1699978916NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics 0101273321 (Virginia)Secondary
2080P0202XPediatrics - Pediatric Cardiology 37054 (Arizona)Secondary
2080P0202XPediatrics - Pediatric Cardiology 0101273321 (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. Karim A Diab allows following entities to bill medicare on his behalf.
Entity NameHealthtap Medical Group Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518330539
PECOS PAC ID: 2062813827
Enrollment ID: O20220103001610

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. Karim A Diab 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
Karim A Diab, MD
Po Box 37174,
Baltimore, MD 21297-3174

Ph: (571) 423-5699
Karim A Diab, MD
8260 Willow Oaks Corporate Dr Ste 400,
Fairfax, VA 22031-4513

Ph: (703) 573-0504

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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