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Washington University Physicians in Illinois, Inc

Multi-Specialty Clinic/Center in O Fallon, IL · enumerated 2017 · authorized official Cathy Eghigian, Senior Director Managed Care.

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

National Provider Identifier

1477076263

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Registry record

Entity type Organization (Type 2)
Legal business name Washington University Physicians in Illinois, Inc
Other name <Unavail>
Practice address 1414 Cross St, O Fallon, IL, 62269
Phone (314) 273-0770
Fax (314) 273-0470
Enumeration date Jul 24, 2017
Last updated in NPPES Apr 25, 2025

Taxonomy & classification

261QM1300X Multi-Specialty Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Cathy Eghigian
Title Senior Director Managed Care
Phone (314) 273-0770

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-04-25. Verify at npiregistry.cms.hhs.gov.
Where is Washington University Physicians in Illinois, Inc located?
The practice location on file with NPPES is in O Fallon, IL.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-25.