WASHINGTON UNIVERSITY PHYSICIANS IN ILLINOIS, INC.
NPI 1639679749
Clinic/Center - Multi-Specialty in Belleville, IL
About Washington University Physicians In Illinois, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WASHINGTON UNIVERSITY PHYSICIANS IN ILLINOIS, INC. (NPI 1639679749) is a healthcare organization registered as a multi-specialty in Belleville, Illinois and active in the NPI registry since February 2018. The organization lists Cathy Eghigian, Senior Director Managed Care, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 2
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Washington University Physicians In Illinois, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
528Medicare enrollment records show 528 clinicians reassign Medicare billing to Washington University Physicians In Illinois, Inc., which bills Medicare for the services they deliver. Of these, 25 practice at this address and 49 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 34
Nearest to this location (20)
See all 528Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Belleville, IL 62226
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Washington University Physicians In Illinois, Inc.'s NPI number?
The NPI number for Washington University Physicians In Illinois, Inc. is 1639679749. It was assigned to this organization in the NPPES registry on February 15, 2018. The provider is also known as WUPI - Pathology and Washington University.
Where is Washington University Physicians In Illinois, Inc. located?
Washington University Physicians In Illinois, Inc. is located at 4500 Memorial Dr, Belleville, IL 62226. The listed phone number is (314) 362-5641.
What is Washington University Physicians In Illinois, Inc.'s specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Multi-Specialty, with taxonomy code 261QM1300X.
Is Washington University Physicians In Illinois, Inc. enrolled in Medicare?
Yes. Washington University Physicians In Illinois, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Washington University Physicians In Illinois, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 528 clinicians in 34 Medicare specialties reassign their Medicare billing to Washington University Physicians In Illinois, Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (92), Pediatric Medicine (91) and Pathology (56). Of these, 25 practice at this address and 49 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Washington University Physicians In Illinois, Inc. was last updated on April 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Washington University Physicians In Illinois, Inc. · NPI 1639679749
Multi-Specialty organization in Belleville, Illinois. Organization record, active in the CMS NPPES registry since February 15, 2018.
## Identity
- **NPI:** 1639679749 (Entity type: Organization)
- **Enumerated:** February 15, 2018
- **Primary specialty:** Clinic/Center - Multi-Specialty · taxonomy 261QM1300X
- **Also known as:** WUPI - Pathology (Other Name); Washington University (Other Name)
- **Organization subpart:** No
- **Authorized official:** Cathy Eghigian, SENIOR DIRECTOR MANAGED CARE
## Practice location
- **Address:** 4500 MEMORIAL DR, Belleville, IL 62226-5360
- **Phone:** (314) 362-5641 · **Fax:** (314) 362-0369
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 528 clinicians in 34 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (92), Pediatric Medicine (91), Pathology (56); 25 practice at this address and 49 within 10 miles; [full list](https://npiprofile.com/npi/1639679749/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1639679749) · Data from the CMS NPPES public registry.