Published mark
Quest Diagnostics
QUEST DIAGNOSTICS INC
NYSE: DGX. Canonical company identity and public leadership record.
US
Record source reportedRecord not claimedNo Eval published
- Alpha ID
- alpha:company:fae5e550-5e85-4102-a4c0-33568a9f22aa
- SEC CIK
- 0001022079
- Website
- www.questdiagnostics.com Open
- Record version
- vpublic-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce, published Oct 15, 2026
- Newest evidence
- Apr 6, 2026
- Monitoring
- Not yet monitored Details
- Integrity
- Not yet signed Methodology
- CEO
- James E. DavisSince Feb 26, 2026
- Chair
- James E. Davis
- Independent
- 10 / 1111 directors published
- Published claims
- 624 distinct sources
- Evidence records
- 120 pinned
- Source conflicts
- 0None open
Built from 4 distinct sources and 12 evidence records. Every Claim links to where it appears. Where nothing was published, the record states the coverage gap.
CorroboratedSource reportedAlpha inferenceNot disclosed
Public record. Alpha publishes governance facts about this organization from regulatory filings and company statements. Private enterprise overlay data is never projected here. The company can claim the record, correct, or dispute any Claim. How this works
EXECUTIVE APPOINTED
Catherine T. Doherty executive of Quest Diagnostics, effective 2026-02-26.
EffectiveEffective Feb 26, 2026E4
Monitoring
ContinuousWhat the published record states about identity, evidence, evaluation, monitoring, authority, and freshness. Watched-source schedules are not published for this record.
- IdentityunclaimedPublished
- Evidencesource_reportedPublished
- Evaluationnot_evaluatedPublished
- MonitoringNot yet published for this record.Not published
- AuthorityNot yet published for this record.Not published
- FreshnesscurrentPublished
Leadership
Evidence| Role | Person | Since | Status | Claim |
|---|---|---|---|---|
| Executive Vice President, Regional Businesses | Catherine T. Doherty | Feb 2026 | current | Source reportedE4 |
| Chairman, Chief Executive Officer and President | James E. Davis | Feb 2026 | current | Source reportedE5 |
| Senior Vice President, Clinical Solutions | Karthik Kuppusamy | Feb 2026 | current | Source reportedE6 |
| Senior Vice President and Chief Commercial Officer | Mark E. Delaney | Feb 2026 | current | Source reportedE7 |
| Senior Vice President and General Counsel | Michael E. Prevoznik | Feb 2026 | current | Source reportedE8 |
| Senior Vice President, Diagnostics Services | Patrick Plewman | Feb 2026 | current | Source reportedE9 |
| Executive Vice President and Chief Financial Officer | Sam Samad | Feb 2026 | current | Source reportedE10 |
Board of directors
Evidence11 directors published. 10 of 11 with a published determination are independent.
| Director | Status | Since | Committees | Claim |
|---|---|---|---|---|
| Denise M. Morrison | Independent | 2019 | Compensation and Leadership Development, chairCompensation and Leadership Development · Chair; Cybersecurity; Governance; TechnologyCybersecurityGovernanceTechnology | Source reportedE3 |
| Gary M. Pfeiffer | Independent | 2004 | Audit and Finance, chairAudit and Finance · Chair; Compensation and Leadership Development; Executive; GovernanceCompensation and Leadership DevelopmentExecutiveGovernance | Source reportedE3 |
| James E. Davis | Not independentChair | 2022 | Executive | Source reportedE3 |
| Luis A. Diaz, Jr., M.D. | Independent | 2023 | None published | Source reportedE3 |
| Robert Carter | Independent | 2024 | Audit and FinanceAudit and Finance; Cybersecurity; TechnologyCybersecurityTechnology | Source reportedE3 |
| Timothy C. Wentworth | Independent | 2026 | Compensation and Leadership DevelopmentCompensation and Leadership Development; Quality and ComplianceQuality and Compliance | Source reportedE3 |
| Timothy L. Main | IndependentChair | 2014 | Audit and FinanceAudit and Finance; Cybersecurity; Governance; Technology · ChairCybersecurityGovernanceTechnology, chair | Source reportedE3 |
| Timothy M. Ring | Independent | 2011 | Compensation and Leadership DevelopmentCompensation and Leadership Development; Executive; Governance · ChairExecutiveGovernance, chair | Source reportedE3 |
| Tracey C. Doi | Independent | 2021 | Audit and FinanceAudit and Finance; Quality and ComplianceQuality and Compliance | Source reportedE3 |
| Vicky B. Gregg | Independent | 2014 | Compensation and Leadership DevelopmentCompensation and Leadership Development; Governance; Quality and ComplianceGovernanceQuality and Compliance | Source reportedE3 |
| Wright L. Lassiter III | Independent | 2020 | Audit and FinanceAudit and Finance; Quality and ComplianceQuality and Compliance | Source reportedE3 |
Committees and risk ownership
Evidence| Committee | Chair | Members | Risks assigned |
|---|---|---|---|
| Audit and Finance | Gary M. Pfeiffer | Gary M. Pfeiffer, Robert Carter, Timothy L. Main, Tracey C. Doi, Wright L. Lassiter III | financial |
| Audit and Finance · Chair; Compensation and Leadership Development; Executive; Governance | Not published | Gary M. Pfeiffer | financial |
| Audit and Finance; Cybersecurity; Governance; Technology · Chair | Not published | Timothy L. Main | cyber, financial |
| Audit and Finance; Cybersecurity; Technology | Not published | Robert Carter | cyber, financial |
| Audit and Finance; Quality and Compliance | Not published | Tracey C. Doi, Wright L. Lassiter III | regulatory, financial |
| Compensation and Leadership Development | Denise M. Morrison | Denise M. Morrison, Gary M. Pfeiffer, Timothy C. Wentworth, Timothy M. Ring, Vicky B. Gregg | Not described in the published record |
| Compensation and Leadership Development · Chair; Cybersecurity; Governance; Technology | Not published | Denise M. Morrison | cyber |
| Compensation and Leadership Development; Executive; Governance · Chair | Not published | Timothy M. Ring | Not described in the published record |
| Compensation and Leadership Development; Governance; Quality and Compliance | Not published | Vicky B. Gregg | regulatory |
| Compensation and Leadership Development; Quality and Compliance | Not published | Timothy C. Wentworth | regulatory |
| Cybersecurity | Not published | Denise M. Morrison, Robert Carter, Timothy L. Main | cyber |
| Executive | Not published | Gary M. Pfeiffer, James E. Davis, Timothy M. Ring | Not described in the published record |
| Governance | Timothy M. Ring | Timothy M. Ring, Denise M. Morrison, Gary M. Pfeiffer, Timothy L. Main, Vicky B. Gregg | Not described in the published record |
| Quality and Compliance | Not published | Timothy C. Wentworth, Tracey C. Doi, Vicky B. Gregg, Wright L. Lassiter III | regulatory |
| Technology | Timothy L. Main | Timothy L. Main, Denise M. Morrison, Robert Carter | Not described in the published record |
Committee RecordAudit and Finance: Chair Gary M. Pfeiffer; Members Gary M. Pfeiffer (Chair); Robert Carter; Timothy L. Main; Tracey C. Doi; Wright L. Lassiter III
Committee AppointmentGary M. Pfeiffer: chair, Audit and Finance
Committee AppointmentRobert Carter: member, Audit and Finance
Committee AppointmentTimothy L. Main: member, Audit and Finance
Committee AppointmentTracey C. Doi: member, Audit and Finance
Committee AppointmentWright L. Lassiter III: member, Audit and Finance
Committee RecordCompensation and Leadership Development: Chair Denise M. Morrison; Members Denise M. Morrison (Chair); Gary M. Pfeiffer; Timothy C. Wentworth; Timothy M. Ring; Vicky B. Gregg
Committee AppointmentDenise M. Morrison: chair, Compensation and Leadership Development
Committee AppointmentGary M. Pfeiffer: member, Compensation and Leadership Development
Committee AppointmentTimothy C. Wentworth: member, Compensation and Leadership Development
Committee AppointmentTimothy M. Ring: member, Compensation and Leadership Development
Committee AppointmentVicky B. Gregg: member, Compensation and Leadership Development
Committee RecordCybersecurity: Chair not stated; Members Denise M. Morrison; Robert Carter; Timothy L. Main
Committee AppointmentDenise M. Morrison: member, Cybersecurity
Committee AppointmentRobert Carter: member, Cybersecurity
Committee AppointmentTimothy L. Main: member, Cybersecurity
Committee RecordExecutive: Chair not stated; Members Gary M. Pfeiffer; James E. Davis; Timothy M. Ring
Committee AppointmentGary M. Pfeiffer: member, Executive
Committee AppointmentJames E. Davis: member, Executive
Committee AppointmentTimothy M. Ring: member, Executive
Committee RecordGovernance: Chair Timothy M. Ring; Members Timothy M. Ring (Chair); Denise M. Morrison; Gary M. Pfeiffer; Timothy L. Main; Vicky B. Gregg
Committee AppointmentTimothy M. Ring: chair, Governance
Committee AppointmentDenise M. Morrison: member, Governance
Committee AppointmentGary M. Pfeiffer: member, Governance
Committee AppointmentTimothy L. Main: member, Governance
Committee AppointmentVicky B. Gregg: member, Governance
Committee RecordQuality and Compliance: Chair not stated; Members Timothy C. Wentworth; Tracey C. Doi; Vicky B. Gregg; Wright L. Lassiter III
Committee AppointmentTimothy C. Wentworth: member, Quality and Compliance
Committee AppointmentTracey C. Doi: member, Quality and Compliance
Committee AppointmentVicky B. Gregg: member, Quality and Compliance
Committee AppointmentWright L. Lassiter III: member, Quality and Compliance
Committee RecordTechnology: Chair Timothy L. Main; Members Timothy L. Main (Chair); Denise M. Morrison; Robert Carter
Committee AppointmentTimothy L. Main: chair, Technology
Committee AppointmentDenise M. Morrison: member, Technology
Committee AppointmentRobert Carter: member, Technology
Control and voting power
EvidenceNo published claims
Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.
Authority to act
Evidence and agent registryWho can act for the company, and on whose authority. This is what a counterparty's agent checks before it accepts an order, signs, or pays.
Principal executive officerJames E. Davis, Chairman, Chief Executive Officer and President, from Feb 26, 2026
Who can authorize an agentNot assessedNo Alpha inference about signing authority or board-reserved matters is published for this record.
Not assessed
AI agents registered by the companyNot registered in the public RegistryAgent Deployments, Agent Use Cases, Authority Grants, TrustChecks, Action Ledger entries and Governance Receipts live in the private enterprise overlay. They are never projected into the public Registry without explicit cross-plane authorization. Absence here is a plane boundary, not evidence that the enterprise operates no agents.
Agent registry
Delegations publishedNot disclosedBoard and officer delegation resolutions are not public filings and are not published in this record.
Search scope
Financials and market context
EvidenceIndex MembershipS&P 500 (SPX)
Security ListingDGX (NYSE)
Index memberships1 membership attached to a specific security and listing.Announcements, effective dates, and removals remain distinct states; Alpha does not infer membership from company size, exchange, or reputation.
SPX
Source reportedAs of Oct 16, 2026. Rights-filtered public evidence only; no redistribution or model training is granted. Only source-backed memberships with an explicit public redistribution basis are returned.
| Index | Security | Status | Effective | Verification | Source |
|---|---|---|---|---|---|
| S&P 500 (S&P Dow Jones Indices) | NYSE: DGX | current | Dec 12, 2002 | inferred | Slickcharts S&P 500 constituent table (public observation, not S&P DJI license) |
Governance and policies
EvidenceNo published claims
Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.
Risk, audit, and cyber
EvidenceNo published claims
Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.
AI oversight and accountability
EvidenceNo published claims
Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.
Legal and regulatory
EvidenceNo published claims
Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.
Compensation
EvidenceNo published claims
Nothing is published for this section yet. A missing Claim is a coverage state, not a negative finding.
Other published claims
EvidencePublished Claims that belong to no section above. Each keeps its permalink, evidence, and assertion state.
Legal NameQUEST DIAGNOSTICS INC
Entity StatusPublic listing published
Official Websitehttps://www.questdiagnostics.com
Published FactUS
Published FactDE
Published FactHealthcare
Published Facthttps://www.questdiagnostics.com
Not yet in this record
CoverageA gap is a coverage state, not a negative finding. These sections are expected for this entity class and are not yet published.
- Corporate structureNot reviewed. Parent, subsidiary and predecessor structure explains who is governed.
- OwnershipNot reviewed. Ownership and voting power determine who can influence the board.
- FinancialsNot reviewed. Governance-relevant financial context frames capital and audit decisions.
- CompensationNot reviewed. Pay design shows how incentives are governed.
- GovernanceNot reviewed. Governing documents and provisions set the rules of the enterprise.
- Shareholder governanceNot reviewed. Meeting and vote records show shareholder dissent and support.
- AuditNot reviewed. Auditor, controls and restatements show assurance over reporting.
- LegalNot reviewed. Material legal and regulatory matters show enforcement exposure.
- RiskNot reviewed. Risk ownership links the board, committees, executives and controls.
- AI governanceNot reviewed. AI oversight is a differentiated Alpha governance domain.
- Absence of a leadership role, committee, or disclosure is not evidence that it does not exist.Absence of a leadership role, committee, or disclosure is not evidence that it does not exist.
- Only explicitly published canonical company identity and current confirmed public roles are included.Only explicitly published canonical company identity and current confirmed public roles are included.
- Absence of a board, committee, executive, listing, or claim is not evidence that it does not exist.Absence of a board, committee, executive, listing, or claim is not evidence that it does not exist.
- Public retrieval does not grant redistribution, model-training, direct-contact, or relationship-pathfinding rights.Public retrieval does not grant redistribution, model-training, direct-contact, or relationship-pathfinding rights.
- This Company Profile is an identity and evidence record, not an Alpha rating.This Company Profile is an identity and evidence record, not an Alpha rating.
Linked people
Same claims as person records- Catherine T. DohertyExecutive Vice President, Regional Businessescompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:20
- James E. DavisChairman, Chief Executive Officer and President; Directorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:21, company:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:9
- Karthik KuppusamySenior Vice President, Clinical Solutionscompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:22
- Mark E. DelaneySenior Vice President and Chief Commercial Officercompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:23
- Michael E. PrevoznikSenior Vice President and General Counselcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:24
- Patrick PlewmanSenior Vice President, Diagnostics Servicescompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:25
- Sam SamadExecutive Vice President and Chief Financial Officercompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:26
- Denise M. MorrisonDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:11
- Gary M. PfeifferDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:12
- Luis A. Diaz, Jr., M.D.Directorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:13
- Robert CarterDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:14
- Timothy C. WentworthDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:15
- Timothy L. MainDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:10
- Timothy M. RingDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:16
- Tracey C. DoiDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:17
- Vicky B. GreggDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:18
- Wright L. Lassiter IIIDirectorcompany:fae5e550-5e85-4102-a4c0-33568a9f22aa:leadership_role:19
Subject and corrections
Public-role doctrineThis record exists because the company is in the published Registry. The company can claim the record, correct, or dispute any Claim. Corrections are versioned and the original stays in history.
- Basis
- Published company record built from public sources
- Sources
- 12 evidence records cited. 0 with redistribution rights.
- Never published
- Private enterprise overlay data: deployments, authority grants, TrustChecks, receipts, telemetry
- Record claimed
- No
- Open disputes
- 0
- Identity ownership
- unclaimed
Claiming not yet available
If the company claims the record, its statements appear as their own assertion state and never overwrite the cited evidence.
Evidence
Authority and rights- E1Alpha canonical company public projection. canonical identity. Retrieved Oct 15, 2026. Cited by 6 Claims.
- E2QUEST DIAGNOSTICS INC Form 10-K (filed 2026-02-26). SEC filing. Retrieved Aug 29, 2026. Cited by 2 Claims.
- E3sec proxy. Published Apr 6, 2026. Retrieved May 3, 2026. Cited by 11 Claims.
- E4sec filing. Published Feb 26, 2026. Retrieved May 4, 2026. Cited by 1 Claim.
- E5sec filing. Published Feb 26, 2026. Retrieved May 4, 2026. Cited by 1 Claim.
- E6sec filing. Published Feb 26, 2026. Retrieved May 4, 2026. Cited by 1 Claim.
- E7sec filing. Published Feb 26, 2026. Retrieved May 4, 2026. Cited by 1 Claim.
- E8sec filing. Published Feb 26, 2026. Retrieved May 4, 2026. Cited by 1 Claim.
- E9sec filing. Published Feb 26, 2026. Retrieved May 4, 2026. Cited by 1 Claim.
- E10sec filing. Published Feb 26, 2026. Retrieved May 4, 2026. Cited by 1 Claim.
- E11board_seats. sp500-board-director-completeness-remediation-2026-05-15. Cited by 35 Claims.
- E12Slickcharts S&P 500 constituent table (public observation, not S&P DJI license). index provider. Retrieved Sep 2, 2026. Cited by 1 Claim.
What changed in version public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce
vpublic-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce published Oct 15, 2026- Catherine T. Doherty executive of Quest Diagnostics, effective 2026-02-26.
- James E. Davis executive of Quest Diagnostics, effective 2026-02-26.
- Karthik Kuppusamy executive of Quest Diagnostics, effective 2026-02-26.
- Mark E. Delaney executive of Quest Diagnostics, effective 2026-02-26.
- Michael E. Prevoznik executive of Quest Diagnostics, effective 2026-02-26.
- Patrick Plewman executive of Quest Diagnostics, effective 2026-02-26.
- Sam Samad executive of Quest Diagnostics, effective 2026-02-26.
- Timothy C. Wentworth seat on Quest Diagnostics, effective 2026-01-01.
- Compensation and Leadership Development; Quality and Compliance committee of Quest Diagnostics, effective 2026-01-01.
- Timothy C. Wentworth member of Compensation and Leadership Development; Quality and Compliance, effective 2026-01-01.
- Robert Carter seat on Quest Diagnostics, effective 2024-01-01.
- Audit and Finance; Cybersecurity; Technology committee of Quest Diagnostics, effective 2024-01-01.
- Robert Carter member of Audit and Finance; Cybersecurity; Technology, effective 2024-01-01.
- Luis A. Diaz, Jr., M.D. seat on Quest Diagnostics, effective 2023-01-01.
- James E. Davis seat on Quest Diagnostics, effective 2022-01-01.
- James E. Davis chairs board Quest Diagnostics, effective 2022-01-01.
- Tracey C. Doi seat on Quest Diagnostics, effective 2021-01-01.
- Audit and Finance; Quality and Compliance committee of Quest Diagnostics, effective 2021-01-01.
- Tracey C. Doi member of Audit and Finance; Quality and Compliance, effective 2021-01-01.
- Wright L. Lassiter III seat on Quest Diagnostics, effective 2020-01-01.
- Wright L. Lassiter III member of Audit and Finance; Quality and Compliance, effective 2020-01-01.
- Denise M. Morrison seat on Quest Diagnostics, effective 2019-01-01.
- Compensation and Leadership Development · Chair; Cybersecurity; Governance; Technology committee of Quest Diagnostics, effective 2019-01-01.
- Denise M. Morrison member of Compensation and Leadership Development · Chair; Cybersecurity; Governance; Technology, effective 2019-01-01.
- Timothy L. Main seat on Quest Diagnostics, effective 2014-01-01.
- Timothy L. Main chairs board Quest Diagnostics, effective 2014-01-01.
- Vicky B. Gregg seat on Quest Diagnostics, effective 2014-01-01.
- Audit and Finance; Cybersecurity; Governance; Technology · Chair committee of Quest Diagnostics, effective 2014-01-01.
- Timothy L. Main member of Audit and Finance; Cybersecurity; Governance; Technology · Chair, effective 2014-01-01.
- Compensation and Leadership Development; Governance; Quality and Compliance committee of Quest Diagnostics, effective 2014-01-01.
- Vicky B. Gregg member of Compensation and Leadership Development; Governance; Quality and Compliance, effective 2014-01-01.
- Timothy M. Ring seat on Quest Diagnostics, effective 2011-01-01.
- Compensation and Leadership Development; Executive; Governance · Chair committee of Quest Diagnostics, effective 2011-01-01.
- Timothy M. Ring member of Compensation and Leadership Development; Executive; Governance · Chair, effective 2011-01-01.
- Gary M. Pfeiffer seat on Quest Diagnostics, effective 2004-01-01.
- Audit and Finance · Chair; Compensation and Leadership Development; Executive; Governance committee of Quest Diagnostics, effective 2004-01-01.
- Gary M. Pfeiffer member of Audit and Finance · Chair; Compensation and Leadership Development; Executive; Governance, effective 2004-01-01.