NPI Portal NPI Lookup & Verification

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

Mrs. Gail C Olson

Developmental Therapist in Jacksonville, IL · enumerated 2008 · practices at Illinois Schoold for the Deaf.

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

National Provider Identifier

1588842157

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Registry record

Entity type Individual (Type 1)
Name Mrs. Gail C Olson
Sex Female
Practice address Jacksonville, IL, 62650
Phone (217) 479-4318
Fax (217) 479-4328
Enumeration date Feb 6, 2008
Last updated in NPPES Feb 6, 2008

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

Taxonomy & licenses

222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative 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.

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Frequently asked questions

Is NPI 1588842157 active?
Yes, as of the latest NPPES snapshot, NPI 1588842157 is active (record last updated 2008-02-06).
How do I verify Gail Olson's NPI record?
Cross-check NPI 1588842157 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 2008-02-06.