Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Harris, PA-C

Physician Assistant in O Fallon, IL · enumerated 2025.

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

National Provider Identifier

1790588739

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Registry record

Entity type Individual (Type 1)

Name Allison Harris

Credential PA-C

Sex Female

Practice address 3 Saint Elizabeth Blvd Ste 5000, O Fallon, IL, 62269

Phone (618) 641-5803

Enumeration date Mar 27, 2025

Last updated in NPPES Jun 3, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085011221 (IL) 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

Is NPI 1790588739 active?

Yes, as of the latest NPPES snapshot, NPI 1790588739 is active (record last updated 2025-06-03).

How do I verify Allison Harris's NPI record?

Cross-check NPI 1790588739 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 2025-06-03.