Derek Clark, M.D.
Neurology Physician · Portland, OR
Derek Clark, M.D. is a neurology physician with a practice address in Portland, Oregon, and NPI 1518283589, issued on Apr 15, 2010. Check the license (Oregon MD158550, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Derek Clark
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- MD158550 OR
MD60658145 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9135 SW Barnes RD Ste 461, Portland, OR 97225
- Phone
- (503) 216-1150
- Enumerated
- Apr 15, 2010
- Entity
- Type 1 · individual
Also registered at 9135 SW Barnes RD Ste 461
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Prakash Ambady, M.D.Neurology Physician1962784298
- Pradeep Chandan, DONeurology Physician1245735968
- Annie Chiu, M.D.Neurology Physician1376924670
- Melanie Clausen, AGACNPNeurology Physician1619791621
- Alexis Croucher, AGACNPAcute Care Nurse Practitioner1134742539
- Felicia Ferguson, MDNeurology Physician1972511491
Verify Derek Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD158550Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
One hospital or facility affiliation
- Providence Health And Services OregonPortland, OR
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Neurology Physician providers in Oregon
There are 284 neurology physician records in Oregon.
Other neurology physician records in Oregon
- Francena Abendroth, MDBend, OR1497760995
- Sabrena AhmadiPortland, OR1013465103
- Zakir Ali, MDAshland, OR1699727750
- Ghadah Altowaijri, M.D.Portland, OR1073820858
- Prakash Ambady, M.D.Portland, OR1962784298
- Sonesh Amin, MDPortland, OR1184121212
- Elise Anderson, MDPortland, OR1972764777
- Gina Anderson, D.O.Corvallis, OR1932231495
- Jordan Anderson, D.O.Portland, OR1255770285
- Ellen Andrae, MDNewberg, OR1427248202
Common questions
What is Derek Clark, M.D.'s NPI number?
Derek Clark, M.D.'s National Provider Identifier (NPI) is 1518283589, issued on Apr 15, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Derek Clark, M.D. located?
The NPPES record lists a practice address at 9135 SW Barnes RD Ste 461, Portland, OR, 97225. Phone: (503) 216-1150. Providers update this record themselves, so call before visiting.
How can I verify Derek Clark, M.D.'s license?
NPPES lists Oregon license number MD158550, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.