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

Mary Louise Willis, ARNP

Individual provider Nurse Practitioner · NPI 1891775623

Mary Louise Willis, ARNP is a Nurse Practitioner in Spokane, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

See every abbreviation used in this directory →

Practice location Address checks out

400 E 5th Ave
Spokane, WA 99202-1334
Phone: (509) 838-2531
Show map & directions

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

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence AP30007042 (WA)

Record details

NPI number1891775623
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedJanuary 18, 2006
Last updated in NPPESNovember 25, 2009

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