Derek K. Johnson, MD
NPI 1285622183ActiveIndividual· Allergy & Immunology, Allergy· Fairfax, VA
Allergy & Immunology, Allergy (MD) in Fairfax, Virginia, trained at University of Washington School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $364,472 for 319 claims, against $34,060 paid for services in 2024. Optinose US, Inc. was the largest of 19 companies reporting payments in 2025, $24,787 in all, mostly speaking and faculty fees.
Overview
| NPI | 1285622183 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 13, 2005 |
| Last updated in NPPES | Aug 12, 2026 |
| Certified by provider | Aug 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology, Allergy Primary | 207KA0200X | 0101230706 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (DC); Practitioner - Allergy/Immunology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 100 |
|---|---|
| Services billed | 2,113 across 17 procedure codes |
| Paid by Medicare | $34,060 |
Part D prescriptions in 2024
| Prescriptions (claims) | 319 · 501 30-day fills |
|---|---|
| Patients | 44 |
| Total drug cost | $364,472 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Pediatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Privia Medical Group, LLCFairfax, VA · 1,533 clinicians
Industry payments (Open Payments)
- 2025$24,787 · 101 payments from 19 companies
- 2024$33,206 · 123 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Optinose US, Inc. | $16,897 | 21 |
| Astrazeneca Pharmaceuticals LP | $6,281 | 24 |
| Genzyme Corporation | $375.45 | 10 |
| Novartis Pharmaceuticals Corporation | $244.97 | 12 |
| Glaxosmithkline, LLC. | $155.16 | 7 |
What the 2025 payments were for
- 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 · 87 payments
- Travel and Lodging$2,640 · 3 payments
- Education$8.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Allergy & Immunology, Allergy providers in Fairfax
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