Sarah Koster, NP
NPI 1922966605 · School Nurse Practitioner · Oakland, CA
Sarah Koster, NP is a School Nurse Practitioner provider in Oakland, CA (NPI 1922966605).
Provider details
- NPI number
- 1922966605
- Entity type
- Individual
- Primary specialty
- School Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 95013269 (CA)
Specialties & taxonomies
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
Under 1 yr in 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
- 2026-01-12
- Last updated
- 2026-01-12
- Certified
- 2026-01-12
Frequently asked questions
- What is Sarah Koster's NPI number?
- Sarah Koster's National Provider Identifier (NPI) is 1922966605, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Koster's specialty?
- Sarah Koster is listed in the NPPES registry with a primary specialty of School Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sarah Koster located?
- Sarah Koster's practice location on file with NPPES is 2135 7th Ave, Oakland, CA 94606-1910.
- What is Sarah Koster's phone number?
- The practice phone number listed in the NPPES registry for Sarah Koster is (505) 967-5432.
- Is Sarah Koster's NPI active?
- Yes — Sarah Koster's NPI (1922966605) is active in the NPPES registry as of the last update on 2026-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.