Information checked for accuracy on April 12, 2024. – If you have a bill from Quest Diagnostics, you have several options to make payment. You can pay:
- Online: Go to billing.questdiagnostics.com and make your payment, no login necessary. You will need the Lab Code and Bill Number from your bill.
- By Mail: Quest Diagnostics has multiple payment addresses depending on where you are in the country. See your bill for the correct payment address for you.
- By Phone: The Quest Diagnostics customer service phone number for payments is 866-697-8378.