Quest Diagnostics, Inc.
Registration details
Company overview
Quest Diagnostics, Inc. is a Private limited company (Ltd.) registered in United States under 2005943, and its current status with Pennsylvania Department of State is active. The company was incorporated on 11 February 1991 and lists its registered address as Phila, United States. No shareholders are recorded for Quest Diagnostics, Inc.; ownership in this jurisdiction is held as the stock ledger under state corporate law (e.g. §219 of the Delaware General Corporation Law), a record kept privately rather than filed publicly. No beneficial owner (UBO) data is recorded for Quest Diagnostics, Inc.; access to beneficial-ownership data in this jurisdiction is governed by its own register rules. This profile is sourced directly from Pennsylvania Department of State and was last updated on 16 October 2026.
Officers
5
Registry notes and limitations
Five officers are currently on record for Quest Diagnostics, Inc., filed with Pennsylvania Department of State.
The register reports 11 officers in total, including past appointments, though only the 5 most relevant records are shown here.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
Quest Diagnostics Incorporated
United States
How these relationships were recorded
Quest Diagnostics, Inc. sits 1 level below its ultimate parent, Quest Diagnostics Incorporated, registered in United States. The full chain up to Quest Diagnostics Incorporated is derived by walking shareholder filings across jurisdictions; no link in it is independently corroborated by Quest Diagnostics, Inc.'s own shareholder record.
Frequently asked questions
Who is Quest Diagnostics, Inc.'s UBO (Ultimate Beneficial Owner)?
No Ultimate Beneficial Owner (UBO) data is recorded for Quest Diagnostics, Inc.; access to beneficial-ownership data in this jurisdiction is governed by its own register rules.
What is Quest Diagnostics, Inc.'s company registration number?
Quest Diagnostics, Inc.'s registration number is 2005943, filed with Pennsylvania Department of State in United States. Its current status on the register is active.
Is Quest Diagnostics, Inc. still an active company?
Quest Diagnostics, Inc.'s status on Pennsylvania Department of State is listed as active.
When was Quest Diagnostics, Inc. incorporated?
Quest Diagnostics, Inc. was incorporated on 11 February 1991, according to Pennsylvania Department of State.
What is Quest Diagnostics, Inc.'s registered address?
The registered address on file for Quest Diagnostics, Inc. is Phila, United States.
What legal structure is Quest Diagnostics, Inc. registered as?
Quest Diagnostics, Inc. is registered as a Private limited company (Ltd.) in United States.
Who are the officers/directors of Quest Diagnostics, Inc.?
Five officers are currently on record for Quest Diagnostics, Inc., filed with Pennsylvania Department of State.
Does Quest Diagnostics, Inc. have a parent company or subsidiaries?
Quest Diagnostics, Inc. sits 1 level below its ultimate parent, Quest Diagnostics Incorporated, registered in United States.
Can Zavia monitor changes to Quest Diagnostics, Inc.'s ownership over time?
This profile reflects a point-in-time snapshot from Pennsylvania Department of State. Zavia's monitoring API can track changes to Quest Diagnostics, Inc.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access Quest Diagnostics, Inc.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like Quest Diagnostics, Inc.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Pennsylvania Department of State and was last synced on 16 October 2026.