DialClerk Directory

Quest Diagnostics locations · Illinois

Quest Diagnostics — 4 Cusumano Professional Plaza Dr, Mount Vernon

Mount Vernon, IL 62864

lab patient service centerLocation K5T

lab location

Quest Diagnostics — 4 Cusumano Professional Plaza Dr, Mount Vernon

Official page read
Location phone618-343-5735Fax

618-244-6588

Published hours

Monday: 07:00–12:00, 13:00–16:00; Tuesday: 07:00–12:00, 13:00–16:00; Wednesday: 07:00–12:00, 13:00–16:00; Thursday: 07:00–12:00, 13:00–16:00; Friday: 07:00–12:00; Saturday: Closed; Sunday: Closed

Product, plan and location

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Illinois

Mailing address

Not researched for this route

Physical address
4 Cusumano Professional Plaza Dr Suite B Mount Vernon, IL 62864

Physical facility address. A location listing does not establish where to send claims, specimens or prescriptions.

Phone published for this location. Operating status not independently confirmed. A phone published for this facility does not establish that local staff answer directly. No location email was published in the reviewed pages.

View source ↗ · Source checked 2026-10-22 · Official facility fax and service details ↗

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Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

Location details

Published services

Laboratory specimen collection

Hours and exceptions

Official location page hours, reviewed 2026-10-22. Times are local to the facility; holiday and service-specific hours may differ.

Location email

Not published in the reviewed source

Official location page ↗ · Organization-wide support

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