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

Agnieszka Markowska

Interpreter in Carol Stream, IL · enumerated 2025.

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

National Provider Identifier

1891589222

Verified

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Registry record

Entity type Individual (Type 1)

Name Agnieszka Markowska

Sex Female

Practice address Carol Stream, IL, 60188

Phone (630) 439-4669

Enumeration date Apr 9, 2025

Last updated in NPPES Apr 9, 2025

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

Taxonomy & licenses

171R00000X Interpreter Other Service Providers 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 Agnieszka Markowska?

The National Provider Identifier (NPI) for Agnieszka Markowska is 1891589222, a Type 1 (individual) record in the CMS NPPES registry.

Where does Agnieszka Markowska practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-09.