Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Allison Ostrer, INTERPRETER

Interpreter in Seattle, WA · enumerated 2021.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1942873492

Verified

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Registry record

Entity type Individual (Type 1)

Name Ms. Allison Ostrer

Credential INTERPRETER

Sex Female

Practice address Seattle, WA, 98106

Phone (206) 938-3953

Enumeration date Jul 22, 2021

Last updated in NPPES Jul 22, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

171R00000X Interpreter Other Service Providers · License MC9995 (WA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Allison Ostrer?

The National Provider Identifier (NPI) for Allison Ostrer is 1942873492, a Type 1 (individual) record in the CMS NPPES registry.

Where does Allison Ostrer practice?

The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-22.