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

Arthur David Siek, MD

Individual provider Hospitalist Physician · NPI 1326223801

Arthur David Siek, MD is a Hospitalist Physician in Olympia, Washington. Licensed in Connecticut and Washington. Registered with an NPI since 2008.

Licensed in
CT, WA
In the registry since
2008
Specialties on file
2
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

413 Lilly Rd NE
Olympia, WA 98506-5166
Phone: (360) 491-9480
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD00049180 (WA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence 046085 (CT)

Record details

NPI number1326223801
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 3, 2008
Last updated in NPPESMarch 11, 2008

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