Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Derek F Andrzejewski, PA-C

Individual provider Medical Physician Assistant · NPI 1437785268

Derek F Andrzejewski, PA-C is a Physician Assistant in Seattle, Washington. Qualified in 2019, 7 years ago. Practices with Allergy Care Center a Medical Corporation, a 4-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California and Washington.

Years since qualifying
7
Licensed in
CA, WA
In the registry since
2020
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

201 16th Ave E
Seattle, WA 98112-5226
Phone: (206) 326-3000
Fax: (877) 515-2975
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 2412 N Ponderosa Dr Ste B111, Camarillo, CA 93010-2379 — (805) 482-8989
  • 2525 Erringer Rd, Simi Valley, CA 93065-2352 — (805) 527-1404

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence PA70082059 (WA)
Medical Physician Assistant Taxonomy 363AM0700X · Licence PA57779 (CA)

Record details

NPI number1437785268
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedMarch 12, 2020
Last updated in NPPESMarch 16, 2026
Certification dateMarch 16, 2026

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Allergy Care Center A Medical Corporation — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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