DialClerk Directory

Quest Diagnostics locations · California

Quest Diagnostics — 22312 El Paseo, Rancho Santa Margarita

Rancho Santa Margarita, CA 92688

lab patient service centerLocation EGZ

lab location

Quest Diagnostics — 22312 El Paseo, Rancho Santa Margarita

Official page read
Location phone949-236-0269Fax

949-589-2161

Published hours

Monday: 06:00–15:30; Tuesday: 06:00–15:30; Wednesday: 06:00–15:30; Thursday: 06:00–15:30; Friday: 06:00–15:30; Saturday: Closed; Sunday: Closed

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California

Mailing address

Not researched for this route

Physical address
22312 El Paseo Ste H Rancho Santa Margarita, CA 92688

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. Official facility title: Quest Diagnostics - Rancho Santa Margarita El Paseo - Employer Drug Testing Not Offered. 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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