Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Richard Douglas Clark, MD, PHD

Individual provider Diagnostic Radiology Physician · NPI 1659393452

Dr. Richard Douglas Clark, MD, PHD is a Diagnostic Radiology Physician in Seattle, Washington. Licensed in Oregon. Registered with an NPI since 2006.

Licensed in
OR
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1229 Madison St Searad Ste 900
Seattle, WA 98104-3586
Phone: (509) 995-1135
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence MD24807 (OR)

Record details

NPI number1659393452
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJuly 24, 2006
Last updated in NPPESJune 3, 2008

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