Derek K Johnson, MD - Medicare Allergy/immunology in Fairfax, VA

Derek K Johnson, MD is a medicare enrolled "Pediatrics - Pediatric Allergy/immunology" physician in Fairfax, Virginia. He went to University Of Washington School Of Medicine and graduated in 1995 and has 29 years of diverse experience with area of expertise as Allergy/immunology. He is a member of the group practice Privia Medical Group Llc, Privia Medical Group Llc and his current practice location is 3903a Fair Ridge Dr, Fairfax, Virginia. You can reach out to his office (for appointments etc.) via phone at (703) 648-0030.

Derek K Johnson is licensed to practice in Pennsylvania (license number MD 065160L) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1285622183.

Contact Information

Derek K Johnson, MD
3903a Fair Ridge Dr,
Fairfax, VA 22033-2938
(703) 648-0030
(703) 648-9028

Map and Direction




Physician's Profile

Full NameDerek K Johnson
GenderMale
SpecialityAllergy/immunology
Experience29 Years
Location3903a Fair Ridge Dr, Fairfax, Virginia
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Derek K Johnson attended and graduated from University Of Washington School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1285622183
  • Provider Enumeration Date: 10/13/2005
  • Last Update Date: 02/27/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 4880653369
  • Enrollment ID: I20140917001575

Medical Identifiers

Medical identifiers for Derek K Johnson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285622183NPI-NPPES
0018751530003MedicaidPA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2080P0201XPediatrics - Pediatric Allergy/immunology MD 065160L (Pennsylvania)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Privia Medical Group Llc43856820611223
Privia Medical Group Llc43856820611223

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. Derek K Johnson allows following entities to bill medicare on his behalf.
Entity NamePrivia Medical Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013042480
PECOS PAC ID: 4385682061
Enrollment ID: O20050422000298

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. Derek K Johnson 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
Derek K Johnson, MD
3903a Fair Ridge Dr,
Fairfax, VA 22033-2938

Ph: (703) 648-0030
Derek K Johnson, MD
3903a Fair Ridge Dr,
Fairfax, VA 22033-2938

Ph: (703) 648-0030

Reviews and Comments


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Phone: 571-314-0444    Fax: 855-237-3628

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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