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Mary Willis, ARNP
NPI 1891775623 · Nurse Practitioner · Spokane, WA
Mary Willis, ARNP is a Nurse Practitioner provider in Spokane, WA (NPI 1891775623).
Provider details
- NPI number
- 1891775623
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- AP30007042 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
400 E 5th Ave
Spokane, WA 99202-1334
Phone: (509) 838-2531
Street-level locationGet directions
Mailing address
Po Box 3649
Spokane, WA 99220-3649
Registry dates
- Enumerated
- 2006-01-18
- Last updated
- 2009-11-25
Frequently asked questions
- What is Mary Willis's NPI number?
- Mary Willis's National Provider Identifier (NPI) is 1891775623, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Willis's specialty?
- Mary Willis is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Willis located?
- Mary Willis's practice location on file with NPPES is 400 E 5th Ave, Spokane, WA 99202-1334.
- What is Mary Willis's phone number?
- The practice phone number listed in the NPPES registry for Mary Willis is (509) 838-2531.
- Is Mary Willis's NPI active?
- Yes — Mary Willis's NPI (1891775623) is active in the NPPES registry as of the last update on 2009-11-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.