Quest Diagnostic Login, Bill Payment & Customer Support Information

Learn about how to login, bill payment options, how to set up Auto Pay, how to cancel account and other helpful tools for your Quest Diagnostic account.

Quest Diagnostic Login

You can login to Quest Diagnostic online account by visiting this link and access all the features. Make sure you have an account already with them. Launch your Web browser and navigate to Quest Diagnostic's Login page (see below).

If you do not have an account, create an account. You will need to enter your email id, phone number and some personal data to verify your information.

Quest Diagnostic Bill Payment

It offers online bill payment facility to all its users and provides several different methods to pay bills. You can pay your bill online at Quest Diagnostic's website, mail your payment to the processing center, or pay your bill in person at any authorized location. It also provides you with the option to set up automatic bill payments online and make alternative payment arrangements. You can also cancel account and contact customer support online.

Here’s the info you need to make your payment in any way you choose:

Online: Log in to your account and pay online at

By mail: You can mail your check to Po Box 822437 Philadelphia, Pa 19182. Before sending the payment you should call the customer service number 800-870-8551 for reconfirmation.

By phone: Use the automated system to make a payment. The phone number is 800-870-8551.

In Person: Pay at any of the nationwide customer service centers.

Quest Diagnostic Customer Support

Average Waiting time: 9 minutes.

Below you can find best ways to contact Quest Diagnostic support according to 44979 PaymentInformation users.

Phone Numbers
  • 800-870-8551 (Support)
  • 4846765309 (Fax)
  • Po Box 822437 Philadelphia, Pa 19182 (Headquarters)
  • 6700 Steger Drcincinnati, Oh 45237 (Location)
  • 1001 Adams Ave Mrgov 2 Nd Floornorristown, Pa 19403 (Mailing)

Quest Diagnostic Opening Hours

Monday 9:30 AM to 5:30 PM
Tuesday 9:30 AM to 5:30 PM
Wednesday 9:30 AM to 5:30 PM
Thursday 9:30 AM to 5:30 PM
Friday 9:30 AM to 5:30 PM
Saturday 9:30 AM to 12:30 PM
Sunday Closed

More Information

Name Quest Diagnostic

Questions and Answers

How can I login into my account?

You can login into your account visit this link

Does it offer online bill payment facility?

Yes, it offers online bill payment facility. Credit Cards, Debit Cards and internet banking payment are accepted.

Where is the headquarters located at?

The headquarters of the company is located at: Po Box 822437 Philadelphia, Pa 19182

How can I contact customer support in case of any issues?

You can contact them by calling on following numbers:

  • 800-870-8551

  • 4846765309

Does it have any social media page?

Yes, the company has profile(s) on :





How do I pay for Quest Diagnostics?

With Easy Pay, all you have to do is provide a credit, debit, or health savings card during your Quest Diagnostics visit. You'll authorize an amount based on the estimated cost of your lab test—but we'll only charge your card if there's a balance after we bill your insurance company.

What is a laboratory invoice?

The laboratory invoice is a document sent by Sonora Quest Laboratories. Generally, it indicates your responsibility for services rendered, total charge, what was paid by your insurance, and what was denied. The invoice may also include “Most recent insurance” usually in regards to the specified visit.

How do I contact Quest Diagnostics?

1 (866) 697-8378Quest Diagnostics

Can I call Quest Diagnostics for drug test results?

Testing is performed as soon as the specimen arrives at our laboratory. Negative results are often released within 24 hours. Non-negative screens undergo confirmatory testing and are typically released within an additional 24 to 72 hours. To get started with Quest today, call 1.800.877.7484 or contact us online.

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