Client Services: (866) 697-8378Courier/STAT: (866) 697-8378**Option 1 then option 6
To find the nearest Quest patient service centers by zip code: www.questdiagnostics.com
4477 W. 118th Street #102 Hawthorne, CA 90250
Monday - Friday8:00 am – 12:30 pm1:30 pm – 4:30 pm
For information about our physicians, services, or classes, please refer to the contact telephone numbers below.