Claire Grigsby, MSN, FNP-C
NPI 1578018404 · Nurse Practitioner · Seattle, WA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claire Grigsby, MSN, FNP-C is a Nurse Practitioner provider in Seattle, WA (NPI 1578018404).
Provider details
- NPI number
- 1578018404
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- AP60695746 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
Mailing address
Registry dates
- Enumerated
- 2016-08-21
- Last updated
- 2020-05-11
- Certified
- 2020-05-11
Frequently asked questions
- What is Claire Grigsby's NPI number?
- Claire Grigsby's National Provider Identifier (NPI) is 1578018404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claire Grigsby's specialty?
- Claire Grigsby is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Claire Grigsby located?
- Claire Grigsby's practice location on file with NPPES is 825 Eastlake Ave E, Seattle, WA 98109-1023.
- What is Claire Grigsby's phone number?
- The practice phone number listed in the NPPES registry for Claire Grigsby is (206) 520-5000.
- Does Claire Grigsby accept Medicare?
- Claire Grigsby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claire Grigsby's NPI active?
- Yes — Claire Grigsby's NPI (1578018404) is active in the NPPES registry as of the last update on 2020-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.