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

William Duff, MD

Individual provider Specialist · NPI 1447492954

William Duff, MD is a Specialist in Portland, Oregon. Practices as a sole proprietor. Licensed in Oregon.

Licensed in
OR
In the registry since
2009
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

924 SW 16th Ave Apt 103
Portland, OR 97205-1734
Phone: (503) 294-1159
Fax: (503) 244-6175
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence MD09457 (OR)

Record details

NPI number1447492954
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 30, 2009
Last updated in NPPESMarch 30, 2009
Mailing address924 Sw 16th Ave Apt 103, Portland, OR 97205-1734

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