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

Mary Katherine Siemon, RNARNP

Individual provider Registered Nurse · NPI 1891802641

Mary Katherine Siemon, RNARNP is a Registered Nurse in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
Specialties on file
2

Practice location Address checks out

180 Nickerson St Ste 303
Seattle, WA 98109-1631
Phone: (206) 284-8963
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence AP30004897 (WA)
Registered Nurse Taxonomy 163W00000X · Licence RN00048036 (WA)

Record details

NPI number1891802641
Entity typeIndividual (Type 1)
GenderFemale
Credentials RNARNP
Sole proprietorNo
NPI enumeratedAugust 25, 2006
Last updated in NPPESSeptember 11, 2025

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