What is quest 800 number? The Customer Service Phone Number of Quest Diagnostics Billing is: +1-800-222-0446 / 973-520-2900. Quest Diagnostics Incorporated is a world's dominating clinical lab placed in New Jersey (United States).What is the phone number for quest? 1-800-566-0065, Customers can also use this number to reach to the customer service representatives of the company. 1-800-238-0271 is the fax number of the company, which can be used to send the orders.What is the telephone number for customer service? Quest Diagnostics Customer Service Phone Number. The Customer Service Phone Number of Quest Diagnostics is: 1800-877-7004 / 1800-445-4032 / 973-520-2901. Quest Diagnostics is a healthcare corporation that provides clinical laboratory services.
877-415-5164 What can QUEST Card Service help me with? You can call QUEST Card Service at 877-415-5164: If you did not get your QUEST card. To get your QUEST card balance. To report a lost, stolen, or damaged QUEST card. To replace your QUEST card. For general information about your QUEST card. Related information