Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Derek William Clark, MD

Individual provider Neurology Physician · NPI 1518283589

Derek William Clark, MD practises Neurology in Portland, Oregon. Graduated from West Virginia University School of Medicine in 2010, 16 years ago. Practices with Providence Health and Services Oregon, a 1,426-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Oregon and Washington.

Years since qualifying
16
Trained at
West Virginia University School of Medicine
Licensed in
OR, WA
In the registry since
2010
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

9135 SW Barnes Rd Ste 461
Portland, OR 97225-6643
Phone: (503) 216-1150
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 500 17th Ave, Seattle, WA 98122-5711 — (206) 320-2800

Specialties & licences

Neurocritical Care Physician (primary) Taxonomy 2084A2900X · Licence MD158550 (OR)
Neurology Physician Taxonomy 2084N0400X · Licence MD60658145 (WA)
Neurology Physician Taxonomy 2084N0400X · Licence MD158550 (OR)

Record details

NPI number1518283589
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 15, 2010
Last updated in NPPESNovember 25, 2022
Certification dateNovember 25, 2022

Medicare enrollment

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

Medicare specialtyNEUROLOGY
Medical schoolWEST VIRGINIA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Providence Health And Services Oregon — 1426 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients61
Services billed 127 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Providence Health and Services Oregon

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1426 clinicians in the practice; 12 are shown here.

Other providers in Portland