Find an organization's NPI
342 active organization NPIs are registered under names beginning "Quest Diagnostics". Each location can bill under its own NPI, so add the city to find the one you need.
276 to 300 of 342, exact name first
- Quest Diagnostics LLC Il1235910936
Clinical Medical Laboratory · Davenport, IA · issued Oct 9, 2023
- Quest Diagnostics LLC Il1942194196
Clinical Medical Laboratory · Mount Pleasant, IA · issued Jun 4, 2025
- Quest Diagnostics LLC Il1538189238
Clinical Medical Laboratory · Chicago, IL · issued Jul 19, 2006
- Quest Diagnostics LLC Il1669298055
Clinical Medical Laboratory · Chicago, IL · issued Dec 2, 2024
- Quest Diagnostics LLC Il1578581526
Clinical Medical Laboratory · Glenview, IL · issued Jul 18, 2006
- Quest Diagnostics LLC Il1912925975
Clinical Medical Laboratory · Lansing, IL · issued Jul 18, 2006
- Quest Diagnostics LLC Il1346389764
Clinical Medical Laboratory · Schaumburg, IL · issued Feb 5, 2007
- Quest Diagnostics LLC Il1710906342
Clinical Medical Laboratory · Vernon Hills, IL · issued Jul 18, 2006
- Quest Diagnostics LLC Il1881630614
Clinical Medical Laboratory · Wood Dale, IL · issued Jun 21, 2006
- Quest Diagnostics LLC Il1124541388
Clinical Medical Laboratory · Dearborn, MI · issued Jul 19, 2017
- Quest Diagnostics LLC Il1790321750
Clinical Medical Laboratory · Mt Pleasant, MI · issued Nov 25, 2019
- Quest Diagnostics LLC Il1851805915
Clinical Medical Laboratory · Blaine, MN · issued Nov 28, 2017
- Quest Diagnostics LLC Il1588178602
Clinical Medical Laboratory · Lake Elmo, MN · issued Nov 28, 2017
- Quest Diagnostics LLC Il1093232167
Clinical Medical Laboratory · Minneapolis, MN · issued Aug 29, 2017
- Quest Diagnostics LLC Il1649298605
Clinical Medical Laboratory · New Brighton, MN · issued Jul 18, 2006
- Quest Diagnostics LLC Il1285244616
Clinical Medical Laboratory · Saint Paul, MN · issued Jul 31, 2020
- Quest Diagnostics LLC Il1740890334
Clinical Medical Laboratory · Saint Paul, MN · issued Aug 7, 2020
- Quest Diagnostics LLC Il1053937219
Clinical Medical Laboratory · West Portsmouth, OH · issued Jun 23, 2020
- Quest Diagnostics LLC Il1851901466
Anatomic Pathology & Clinical Pathology Physician · Beaver Dam, WI · issued Aug 7, 2020
- Quest Diagnostics LLC Il1881203826
Clinical Medical Laboratory · Milwaukee, WI · issued Jul 27, 2020
- Quest Diagnostics LLC Il1144542465
Clinical Medical Laboratory · River Falls, WI · issued Mar 1, 2010
- Quest Diagnostics Massachusetts LLC1942553607
Clinical Medical Laboratory · Auburn, MA · issued Oct 18, 2012
- Quest Diagnostics Massachusetts LLC1245730589
Clinical Medical Laboratory · Brockton, MA · issued Feb 13, 2018
- Quest Diagnostics Massachusetts LLC1477571420
Clinical Medical Laboratory · Cambridge, MA · issued Jul 18, 2006
- Quest Diagnostics Massachusetts LLC1184069593
Clinical Medical Laboratory · Dorchester, MA · issued Apr 30, 2013
Source: CMS NPPES monthly file of Aug 9, 2026, organization (Type 2) records.