Derek K Johnson, MD

Individual provider Pediatric Allergy/Immunology Physician · NPI 1285622183

Derek K Johnson, MD practises Allergy/Immunology in Fairfax, Virginia. Graduated from University of Washington School of Medicine in 1995, 31 years ago. Practices with Privia Medical Group, LLC, a 1,518-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania.

Years since qualifying: 31
Trained at: University of Washington School of Medicine
Licensed in: PA
In the registry since: 2005

What do these letters mean?

MD — Doctor of Medicine: A physician who completed allopathic medical school.

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Practice location Address checks out

3903A Fair Ridge Dr
Fairfax, VA 22033-2938
Phone: (703) 648-0030
Fax: (703) 648-9028

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Allergy/Immunology Physician (primary)	Taxonomy 2080P0201X · Licence MD 065160L (PA)

Record details

NPI number	1285622183
Entity type	Individual (Type 1)
Gender	Male
Credentials	MD
Sole proprietor	Yes
NPI enumerated	October 13, 2005
Last updated in NPPES	February 27, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialty	ALLERGY/IMMUNOLOGY
Also practises	PEDIATRIC MEDICINE
Medical school	UNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated	1995 (31 years in practice)
Group practice	Privia Medical Group, Llc — 1518 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Telehealth	Offers telehealth services
Practice locations	7 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients	100
Services billed	2,113 a service is one billed item, such as a visit, a test or a procedure
Average patient age	71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program	$19,250 10 payments
Food and Beverage	$2,888 83 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging	$2,640 3 payments · travel or lodging paid or reimbursed, such as to attend a conference
Education	$8 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Privia Medical Group, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1518 clinicians in the practice; 12 are shown here.

Dr. Jason Douglas Engel, MD Urology Physician · Washington, DC
Danielle Leigh Ibarra, NP Women's Health Nurse Practitioner · Rockville, MD
Dr. John P Kowalski, MD Family Medicine Physician · Richmond, VA
Dr. Shahida Parveen Mirza, MD Family Medicine Physician · Schenectady, NY
Surosh Nazeer, MD Student in an Organized Health Care Education/Training Program · Greenbelt, MD
Monica A O'Rourke, DPT Physical Therapist · Alexandria, VA
Valerie Paquette, FNP Family Nurse Practitioner · Reston, VA
Brenda Josephine Rivera, NP Obstetrics & Gynecology Physician · Virginia Beach, VA
Stanthia Nolanda Ryan, MD Obstetrics & Gynecology Physician · Chapel Hill, NC
Dr. Rami Zuhayr Tabbarah, MD Obstetrics & Gynecology Physician · Falls Church, VA
Grace Thapa, NP Family Nurse Practitioner · Burke, VA
Soonbok Grace Woo, MD Gastroenterology Physician · Rockville, MD