Party · Healthcare Services

Quest Diagnostics Incorporated

Federal civil lawsuits naming Quest Diagnostics Incorporated, a Healthcare Services company.

Ticker: NYSE: DGX
Business: Services-Medical Laboratories
Headquarters: Secaucus, NJ
Incorporated in: Delaware
SEC CIK: 1022079

Quest Diagnostics Incorporated is a public company in Services-Medical Laboratories, based in Secaucus, NJ (traded on NYSE as DGX, incorporated in Delaware). It appears in 292 federal civil lawsuits in this index, most often as a defendant (267 of 292). These cases are most often Civil Rights and Labor matters, filed between 1996 and 2026, most frequently in District Court, D. New Jersey. Frequent opposing parties include Quest Diagnostics, Inc, Quest Diagnostics, and Quest Diagnostics Clinical Laboratories, Inc.

292

Lawsuits

267

As Defendant

As Plaintiff

Open

276

Terminated

1996–2026

Span

9 mo

Median Duration

9.4 cases/yrNamed as defendant in 91% of cases43% Civil RightsRecent filings down

Cases by State

AK · 2

Open Cases Over Time

1996peak 30 open2026

Case Types Over Time

19962026

Civil RightsLaborContractPersonal Property / FraudFederal Tax / Statutory Actions

Filings by Year

19962026

Case Types filter →

Civil Rights127

Labor48

Contract41

Personal Property / Fraud33

Federal Tax / Statutory Actions15

RICO / Consumer / Other Statutes12

Where Filed filter →

Frequent Opposing Parties

Filtered Contract Clear

41 Cases — Newest First

Ager v. Quest Diagnostics Incorporated

Contract Terminated District Court, M.D. FloridaNo. 8:23-cv-00285Filed 02/09/2023
Quest Diagnostics Incorporated v. Heathwood Assisted Living at Penfield, Inc

Contract Terminated District Court, W.D. New YorkNo. 6:22-cv-06563Filed 12/19/2022
Quest Diagnostics Incorporated v. The Gerry Homes

Contract Terminated District Court, W.D. New YorkNo. 1:22-cv-00963Filed 12/09/2022
Quest Diagnostics Incorporated v. Heritage Village Rehab and Skilled Nursing, Inc

Contract Terminated District Court, W.D. New YorkNo. 1:22-cv-00962Filed 12/09/2022
Quest Diagnostics Incorporated v. Heritage Village Rehab and Skilled Nursing, Inc

Contract Terminated District Court, W.D. New YorkNo. 6:22-cv-06551Filed 12/09/2022
Quest Diagnostics Incorporated v. The Gerry Homes

Contract Terminated District Court, W.D. New YorkNo. 6:22-cv-06550Filed 12/09/2022
Certain Underwriters at Lloyd's Syndicate 3624 Subscribing to Policy Number MPL4195264.19 v. Quest Diagnostics

Contract Terminated District Court, S.D. New YorkNo. 7:22-cv-08763Filed 10/14/2022
Perlin v. Quest Diagnostics, Inc

Contract Terminated District Court, S.D. FloridaNo. 0:22-cv-61803Filed 09/23/2022
Quest Diagnostics Incorporated v. Sprain Brook Manor Rehabilitation

Contract Terminated District Court, S.D. New YorkNo. 7:22-cv-00962Filed 02/03/2022
Quest Diagnostics Incorporated v. Adria at Riverside Rehabilitation & Nursing

Contract Terminated District Court, S.D. New YorkNo. 7:22-cv-00957Filed 02/03/2022
Quest Diagnostics Incorporated v. Evexia Diagnostics, Inc

Contract Terminated District Court, D. ConnecticutNo. 3:20-cv-00122Filed 01/28/2020
Cinelli v. Quest Diagnostics Incorporated

Contract Terminated District Court, S.D. New YorkNo. 7:19-cv-05803Filed 06/20/2019
Johnston v. Quest Diagnostics, Inc

Contract Terminated District Court, D. New JerseyNo. 2:19-cv-13957Filed 06/18/2019
Rodrigo v. Quest Diagnostics Clinical Laboratories, Inc

Contract Terminated District Court, E.D. MissouriNo. 4:18-cv-01985Filed 11/27/2018
Quest Diagnostics Incorporated v. D'Ascoli

Contract Terminated District Court, D. New JerseyNo. 2:15-cv-07943Filed 11/06/2015
Quest Diagnostics Incorporated v. D'Ascoli

Contract Terminated District Court, D. New JerseyFiled 11/06/2015
Howard v. Quest Diagnostics Incorporated

Contract Terminated District Court, M.D. FloridaNo. 8:14-cv-01397Filed 06/11/2014
Quest Diagnostics Incorporated v. National Asset Management, LLC

Contract Terminated District Court, D. New JerseyNo. 2:14-cv-00433Filed 01/23/2014
Quest Diagnostics, Inc v. Albert

Contract Terminated District Court, D. ConnecticutNo. 3:11-cv-01091Filed 07/11/2011
Matson v. Quest Diagnostics, Inco, Et Al

Contract Terminated District Court, E.D. PennsylvaniaFiled 03/07/2011
Matson v. Quest Diagnostics, Incorporated

Contract Terminated District Court, E.D. PennsylvaniaNo. 2:11-cv-01573Filed 03/07/2011
Brown v. Quest Diagnostics, LLC

Contract Terminated District Court, D. MassachusettsNo. 1:08-cv-11517Filed 09/05/2008
Quest Diagnostics Incorporated v. Factory Mutual Insurance Company

Contract Terminated District Court, E.D. LouisianaNo. 2:07-cv-03877Filed 07/27/2007
Quest Diagnostics Incorporated v. Vernaglia

Contract Terminated District Court, D. New JerseyNo. 2:07-cv-02631Filed 06/05/2007
Agostino v. Quest Diagnostics Inc

Contract Terminated District Court, N.D. IllinoisNo. 1:07-cv-02082Filed 04/13/2007
Nouri v. Quest Diagnostics Incorporated

Contract Terminated District Court, D. New JerseyNo. 2:06-cv-00733Filed 02/17/2006
Maria Montalvo v. Quest Diagnostics, Inc

Contract Terminated District Court, D. NevadaNo. 2:05-cv-01181Filed 09/26/2005
Quest Diagnostics v. Datapool, Inc

Contract Terminated District Court, E.D. VirginiaNo. 3:05-cv-00082Filed 02/07/2005
200 Boundary Associates, LLC v. Quest Diagnostics Incorporated

Contract Terminated District Court, E.D. New YorkFiled 12/28/2004
Grandalski v. Quest Diagnostics,inc

Contract Terminated District Court, D. New JerseyNo. 2:04-cv-04362Filed 09/03/2004
Portillo v. Quest Diagnostics

Contract Terminated District Court, W.D. TexasNo. 3:04-cv-00257Filed 07/02/2004
Passauer v. Quest Diagnostics

Contract Terminated District Court, D. MarylandNo. 1:03-cv-00159Filed 01/17/2003
Quest Diagnostics in v. Glaxosmithkline PLC

Contract Terminated District Court, D. New JerseyNo. 2:02-cv-02115Filed 05/02/2002
Crawford v. Quest Diagnostics

Contract Terminated District Court, S.D. New YorkNo. 1:02-cv-01760Filed 03/05/2002
Hogan v. Quest Diagnostics

Contract Terminated District Court, S.D. TexasNo. 4:02-cv-00322Filed 01/29/2002
ProPath Services LLP v. Quest Diagnostics

Contract Terminated District Court, N.D. TexasNo. 3:00-cv-02391Filed 10/31/2000
Quest Diagnostics in v. Smith

Contract Terminated District Court, D. New JerseyNo. 2:00-cv-00254Filed 01/18/2000
Clemons v. Quest Diagnostics

Contract Terminated District Court, N.D. IllinoisNo. 1:99-cv-06122Filed 09/16/1999
Barrio v. Quest Diagnostics

Contract Terminated District Court, W.D. WashingtonNo. 2:99-cv-00634Filed 04/23/1999
Amgic R&D LP 1983 v. Quest Diagnostics

Contract Terminated District Court, D. ColoradoNo. 1:99-cv-00338Filed 02/22/1999
USA, Et Al v. Quest Diagnostics, Et Al

Contract Terminated District Court, D. MassachusettsFiled 02/21/1997