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

Sean Fennessy, MD

Individual provider Internal Medicine Physician · NPI 1720153372

Sean Fennessy, MD is an Internal Medicine Physician in Renton, Washington. Practices as a sole proprietor. Licensed in Washington.

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

See every abbreviation used in this directory →

Practice location Address checks out

400 S 43rd St
Renton, WA 98055-5714
Phone: (425) 228-3450
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD00045507 (WA)

Record details

NPI number1720153372
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 21, 2006
Last updated in NPPESJuly 8, 2007

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