NPPES file of Aug 9, 2026

Find an organization's NPI

13 active organization NPIs are registered under names beginning "Oa Associates" in Illinois. Each location can bill under its own NPI, so add the city to find the one you need.

1 to 13 of 13, exact name first

  1. Oa Associates LLC

    Orthopaedic Surgery Physician · Belleville, IL · issued Mar 10, 2010

    1679896260
  2. Oa Associates, LLC

    Orthopaedic Surgery Physician · Belleville, IL · issued Jun 18, 2010

    1013238534
  3. Oa Associates, LLC

    Sports Medicine (Internal Medicine) Physician · Belleville, IL · issued Jul 29, 2010

    1912211202
  4. Oa Associates, LLC

    Orthopaedic Hand Surgery Physician · Belleville, IL · issued Aug 20, 2010

    1104132752
  5. Oa Associates LLC

    Orthopaedic Surgery Physician · Belleville, IL · issued Dec 22, 2011

    1619246485
  6. Oa Associates LLC

    Orthopaedic Surgery Physician · Belleville, IL · issued Aug 17, 2015

    1649646332
  7. Oa Associates, LLC

    Orthopaedic Hand Surgery Physician · Chester, IL · issued Aug 17, 2010

    1518272319
  8. Oa Associates LLC

    Orthopaedic Surgery Physician · Columbia, IL · issued Aug 11, 2017

    1588189419
  9. Oa Associates, LLC

    Orthopaedic Surgery Physician · Nashville, IL · issued Jun 11, 2013

    1174961270
  10. Oa Associates, LLC

    Orthopaedic Surgery Physician · O Fallon, IL · issued Jun 17, 2010

    1003137662
  11. Oa Associates, LLC

    Orthopaedic Surgery Physician · O Fallon, IL · issued Jun 13, 2013

    1649618554
  12. Oa Associates, LLC

    Orthopaedic Surgery Physician · Shiloh, IL · issued Apr 13, 2016

    1477917656
  13. Oa Associates LLC DBA Orthopedic And Sports Medicine LTD

    Physician Assistant · Belleville, IL · issued Sep 24, 2014

    1053713750

Source: CMS NPPES monthly file of Aug 9, 2026, organization (Type 2) records.