WASHINGTON UNIVERSITY PHYSICIANS IN ILLINOIS, INC
NPI 1174015515
Clinic/Center - Multi-Specialty in Saint Louis, MO
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 1174015515) is a healthcare organization registered as a multi-specialty in Saint Louis, Missouri and active in the NPI registry since June 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, 13 practice at this address and 391 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 528Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63108
Saint Louis, MO 63110
Saint Louis, MO 63110
Saint Louis, MO 63110
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 1174015515. It was assigned to this organization in the NPPES registry on June 1, 2018. The provider is also known as WUPI - Radiation Oncology and Washington University.
Where is Washington University Physicians In Illinois, Inc located?
Washington University Physicians In Illinois, Inc is located at 4511 Forest Park Ave, Saint Louis, MO 63108. The listed phone number is (314) 362-9715.
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, 13 practice at this address and 391 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 1174015515
Multi-Specialty organization in Saint Louis, Missouri. Organization record, active in the CMS NPPES registry since June 1, 2018.
## Identity
- **NPI:** 1174015515 (Entity type: Organization)
- **Enumerated:** June 1, 2018
- **Primary specialty:** Clinic/Center - Multi-Specialty · taxonomy 261QM1300X
- **Also known as:** WUPI - Radiation Oncology (Other Name); Washington University (Other Name)
- **Organization subpart:** No
- **Authorized official:** Cathy Eghigian, SENIOR DIRECTOR MANAGED CARE
## Practice location
- **Address:** 4511 FOREST PARK AVE, Saint Louis, MO 63108-2138
- **Phone:** (314) 362-9715
## 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); 13 practice at this address and 391 within 10 miles; [full list](https://npiprofile.com/npi/1174015515/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/1174015515) · Data from the CMS NPPES public registry.