NPPES file of Aug 9, 2026

Find an organization's NPI

53 active organization NPIs are registered under names beginning "Quest Diagnostics Incorporated". Each location can bill under its own NPI, so add the city to find the one you need.

1 to 25 of 53, exact name first

  1. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Downey, CA · issued Feb 5, 2007

    1386783637
  2. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Largo, FL · issued Dec 17, 2018

    1104398080
  3. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Atlanta, GA · issued Jul 16, 2007

    1679772008
  4. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Moline, IL · issued Jul 18, 2006

    1558389510
  5. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Attleboro, MA · issued Jul 18, 2006

    1396763900
  6. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Brookline, MA · issued Jul 18, 2006

    1457379414
  7. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Brookline, MA · issued Dec 14, 2009

    1801125257
  8. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Fall River, MA · issued Jul 18, 2006

    1134147747
  9. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Rockville, MD · issued Jul 18, 2006

    1952329575
  10. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Flint, MI · issued Jul 18, 2006

    1750309704
  11. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Lapeer, MI · issued Sep 29, 2009

    1538493127
  12. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Northville, MI · issued Jul 18, 2006

    1316965361
  13. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Southfield, MI · issued Jul 18, 2006

    1578582003
  14. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Concord, NH · issued Jul 18, 2006

    1275551236
  15. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Manchester, NH · issued Jul 20, 2006

    1538189725
  16. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Merrimack, NH · issued Jul 18, 2006

    1265450985
  17. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Milford, NH · issued Jul 19, 2006

    1396765004
  18. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Nashua, NH · issued Jul 18, 2006

    1487672036
  19. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Nashua, NH · issued Jul 18, 2006

    1720006455
  20. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Clifton, NJ · issued Jun 21, 2006

    1932145778
  21. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Las Vegas, NV · issued Jun 21, 2006

    1043256886
  22. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Sparks, NV · issued Jul 18, 2006

    1174541130
  23. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Albany, NY · issued Jan 3, 2024

    1265202147
  24. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Mount Kisco, NY · issued Feb 3, 2009

    1376781039
  25. Quest Diagnostics Incorporated

    Clinical Medical Laboratory · Mount Kisco, NY · issued Mar 31, 2025

    1730982109

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