# Quest Diagnostics > Alpha governed public record. Unknown, unavailable, and unpublished values are never inferred as zero. ## Record | Field | Value | | --- | --- | | Representation | alpha-profile-markdown-v3 | | Protocol | Alpha Governance Facts Protocol 0.1 | | Schema | alpha.governance.entity.public.v1 | | Record version | public-1 | | Canonical entity | alpha:company:fae5e550-5e85-4102-a4c0-33568a9f22aa | | Entity type | Company | | Canonical URL | https://registry.alpha.ac/companies/quest-diagnostics-inc | | Publication | PUBLISHED | | Verification | source_reported | | Verification schema | alpha-verification-states-v1 | | Ownership | unclaimed | | Published claims | 25 | | Claims under review | 1 | | Evidence records | 4 | | Conflicts | 0 | | Conflicts in internal review | 0 | | Observed | 2026-09-05T21:30:46.727835+00:00 | | Last reviewed | 2026-09-05T21:30:46.727835+00:00 | ## Identity - Legal name: QUEST DIAGNOSTICS INC - Display name: Quest Diagnostics ## Leadership - James E. Davis: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Timothy L. Main: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Denise M. Morrison: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Gary M. Pfeiffer: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Luis A. Diaz, Jr., M.D.: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Robert Carter: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Timothy C. Wentworth: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Timothy M. Ring: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Tracey C. Doi: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Vicky B. Gregg: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Wright L. Lassiter III: Director. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3. - Catherine T. Doherty: Executive Vice President, Regional Businesses. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4. - James E. Davis: Chairman, Chief Executive Officer and President. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4. - Karthik Kuppusamy: Senior Vice President, Clinical Solutions. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4. - Mark E. Delaney: Senior Vice President and Chief Commercial Officer. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4. - Michael E. Prevoznik: Senior Vice President and General Counsel. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4. - Patrick Plewman: Senior Vice President, Diagnostics Services. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4. - Sam Samad: Executive Vice President and Chief Financial Officer. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4. ## Roles - PUBLISHED ## Governance - NOT_ASSERTED ## Board committees - PUBLISHED ## Financials - NOT_ASSERTED ## Workforce - NOT_ASSERTED ## Market and index context - PUBLISHED ## Legal Name - QUEST DIAGNOSTICS INC. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:1. ## Headquarters - US. Publication: UNDER_REVIEW. Verification: source_reported. Assertion: source_reported. Evidence: unlinked, under review. ## Entity Status - Public listing published. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:1. ## Official Website - https://www.questdiagnostics.com. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:2. ## Published Fact - US. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:1. - DE. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:1. - Healthcare. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:1. - https://www.questdiagnostics.com. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:2. ## Coverage states | Field | Value | | --- | --- | | Identity | PUBLISHED | | Business | PUBLISHED | | Leadership | PUBLISHED | | Board and committees | PUBLISHED | | Governance | NOT_ASSERTED | | Financials | NOT_ASSERTED | | Workforce | NOT_ASSERTED | | Ownership | NOT_ASSERTED | | Ratings | NOT_PUBLISHED | | Market and index context | PUBLISHED | ## Public sources - alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:1: [Alpha canonical company public projection](https://www.alpha.ac/api/public/companies/quest-diagnostics-inc). - alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:2: [QUEST DIAGNOSTICS INC Form 10-K (filed 2026-02-26)](https://www.sec.gov/Archives/edgar/data/1022079/000102207926000015/dgx-20251231.htm). - alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:3: [Quest Diagnostics Incorporated DEF 14A 2026-04-06](https://www.sec.gov/Archives/edgar/data/1022079/000114036126013356/ny20064122x1_def14a.htm). - alpha:evidence:company:fae5e550-5e85-4102-a4c0-33568a9f22aa:4: [DGX 10-K executive officers](https://www.sec.gov/Archives/edgar/data/1022079/000102207926000015/dgx-20251231.htm). ## Rights | Field | Value | | --- | --- | | public_retrieval | allowed | | agent_retrieval | allowed | | redistribution | not_granted | | model_training | not_granted | | commercial_use | not_specified | | relationship_pathfinding | not_granted | | direct_contact | not_granted | ## Limitations - 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. - 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. - This Company Profile is an identity and evidence record, not an Alpha rating. - Current index memberships: Unavailable - Index membership events: Unavailable ## Alternate representations - [Canonical profile](https://registry.alpha.ac/companies/quest-diagnostics-inc) - [Public Markdown](https://registry.alpha.ac/companies/quest-diagnostics-inc.md) - [Public JSON](https://registry.alpha.ac/api/public/companies/quest-diagnostics-inc) - [JSON-LD](https://registry.alpha.ac/api/public/companies/quest-diagnostics-inc?format=jsonld) - MCP resource: `alpha://companies/quest-diagnostics-inc` at https://mcp.alpha.ac/mcp