Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Duncan Harley, MD

Individual provider Diagnostic Radiology Physician · NPI 1720172232

John Duncan Harley, MD is a Diagnostic Radiology Physician in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1660 S Columbian Way
Seattle, WA 98108
Phone: (206) 764-2149
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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 MD00010697 (WA)

Record details

NPI number1720172232
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 2, 2006
Last updated in NPPESSeptember 14, 2007

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