NPPES file of Aug 9, 2026

Washington University Physicians In Illinois

Washington University Physicians In Illinois holds 16 active organization NPIs in the federal registry, with practice locations in 6 cities in 2 states. 11 list multi-specialty clinic/center as their primary taxonomy; each location can bill under its own NPI.

CMS NPPES registry, file of Aug 9, 2026 · legal names grouped after punctuation and "LLC" are removed · method · Verify with CMS →

Which NPI is yours?

Search the organization with your city to find the NPI for the location you visit or bill.

Find a location's NPI

Shiloh, IL has the most NPIs, 4

  1. Shiloh, IL4
  2. Alton, IL3
  3. Belleville, IL3
  4. O Fallon, IL3
  5. Saint Louis, MO2
  6. Swansea, IL1

Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.

Most NPIs were issued in 2018 and 2019

Washington University Physicians In Illinois NPIs by year issued2017: 1, 2018: 7, 2019: 2, 2020: 2, 2021: 0, 2022: 2, 2023: 0, 2024: 0, 2025: 1, 2026: 10246820172018201920202021202220232024202520267212211
Washington University Physicians In Illinois NPIs by year issued2017: 1, 2018: 7, 2019: 2, 2020: 2, 2021: 0, 2022: 2, 2023: 0, 2024: 0, 2025: 1, 2026: 10246820172018201920202021202220232024202520267212211
Washington University Physicians In Illinois NPIs by year issued2017: 1, 2018: 7, 2019: 2, 2020: 2, 2021: 0, 2022: 2, 2023: 0, 2024: 0, 2025: 1, 2026: 10246820182020202220242026712211

Source: CMS NPPES, enumeration dates.

7 NPIs were issued in 2018 alone, more than in any other year; none in 3 of the years between.

Shiloh, IL locations

The city with the most Washington University Physicians In Illinois NPIs. The full list of all 16 follows.

NPILocationPrimary taxonomyIssued
17003741051414 CROSS ST, Shiloh, ILMulti-Specialty Clinic/CenterMay 1, 2018
13568229931418 CROSS ST STE 180, Shiloh, ILMulti-Specialty Clinic/CenterAug 22, 2018
15983984551418 CROSS STREET SUITE 180, Shiloh, ILPharmacyFeb 19, 2020
12650295081418 CROSS ST STE 180, Shiloh, ILMulti-Specialty Clinic/CenterDec 21, 2020
All 16 locations, by state and city
NPILocationPrimary taxonomyIssued
17609461562 MEMORIAL DR STE 101, Alton, ILMulti-Specialty Clinic/CenterJan 30, 2019
18813110741 MEMORIAL DR DEPT OF, Alton, ILRadiology Clinic/CenterOct 27, 2022
13360370761 MEMORIAL DR, Alton, ILDiagnostic Radiology PhysicianJun 24, 2025
18114970434500 MEMORIAL DR, Belleville, ILMulti-Specialty Clinic/CenterFeb 14, 2018
16396797494500 MEMORIAL DR, Belleville, ILMulti-Specialty Clinic/CenterFeb 15, 2018
12752897044700 MEMORIAL DR STE 220, Belleville, ILNeurological Surgery PhysicianFeb 23, 2022
14770762631414 CROSS ST, O Fallon, ILMulti-Specialty Clinic/CenterJul 24, 2017
15285698451414 CROSS ST, O Fallon, ILMulti-Specialty Clinic/CenterFeb 22, 2018
18912650391414 CROSS ST, O Fallon, ILOccupational TherapistNov 30, 2018
17003741051414 CROSS ST, Shiloh, ILMulti-Specialty Clinic/CenterMay 1, 2018
13568229931418 CROSS ST STE 180, Shiloh, ILMulti-Specialty Clinic/CenterAug 22, 2018
15983984551418 CROSS STREET SUITE 180, Shiloh, ILPharmacyFeb 19, 2020
12650295081418 CROSS ST STE 180, Shiloh, ILMulti-Specialty Clinic/CenterDec 21, 2020
187113244919 WOLF CREEK DR, Swansea, ILMulti-Specialty Clinic/CenterDec 31, 2019
11740155154511 FOREST PARK AVE, Saint Louis, MOMulti-Specialty Clinic/CenterJun 1, 2018
14572031354901 FOREST PARK AVE STE 341, Saint Louis, MOMulti-Specialty Clinic/CenterFeb 13, 2026

Checking an organization

  1. Match the NPI to the exact location you will visit or bill; each location can have its own.
  2. Confirm the business entity with the secretary of state.
  3. Check the HHS-OIG exclusion list for the organization and its owners.
  4. Verify each clinician you will see on their own record and with the state license search.

Common questions

Why does Washington University Physicians In Illinois have 16 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Washington University Physicians In Illinois's NPIs list practice locations in 6 cities.

Is an organization NPI a license?

No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.

Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.