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

Sara Maternowski

Occupational Therapy Assistant in Joliet, IL · enumerated 2010.

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

National Provider Identifier

1659687937

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Registry record

Entity type Individual (Type 1)
Name Sara Maternowski
Sex Female
Practice address Joliet, IL, 60435
Phone (815) 725-2194
Enumeration date Aug 25, 2010
Last updated in NPPES Apr 12, 2013

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

Taxonomy & licenses

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

Other identifiers

Identifier Type State Issuer
276874 Other WI NBCOT

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.

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Frequently asked questions

Is NPI 1659687937 active?
Yes, as of the latest NPPES snapshot, NPI 1659687937 is active (record last updated 2013-04-12).
How do I verify Sara Maternowski's NPI record?
Cross-check NPI 1659687937 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-12.