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
Mailing address123 Hudson Ln Se Apt 302, Olympia, WA 98513-1526

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