Are you staring at a Quest Diagnostics bill and wondering about the easiest way to pay it? I’ve been there! After having several lab tests done recently, I needed to figure out how to handle my Quest bill quickly. The good news is that paying by phone is super easy once you know the right number to call
In this guide, I’ll walk you through everything you need to know about paying your Quest Diagnostics bill by phone, including the official phone number, hours of operation, and step-by-step instructions to make the process smooth and hassle-free.
Quest Diagnostics Bill Pay Phone Number
The official phone number for Quest Diagnostics bill payment is:
1866,MYQUEST (1,866697,8378)
This number connects you directly to Quest Diagnostics billing department representatives who can help process your payment and answer any billing questions you might have.
Hours of Operation for Phone Payments
You can call the Quest Diagnostics billing department during these hours:
- Monday through Friday: 7:00 AM to 8:30 PM
- Saturday: 7:00 AM to 4:30 PM
- Sunday: Closed
Pro tip Call during weekday mornings or evenings for shorter hold times!
Step-by-Step: How to Pay Your Quest Diagnostics Bill by Phone
Paying your Quest bill over the phone is quick and straightforward. Here’s exactly what you need to do:
-
Gather your information first
- Find your account number (on your billing statement)
- Know the amount you owe
- Have your payment method ready
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Call 1.866.MYQUEST (1.866.697.8378)
- This connects you to Quest Diagnostics billing department
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Speak with a representative
- Let them know you want to make a payment
- Provide your name and account number
- Mention recent tests if needed
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Choose your payment method
- Credit card (Visa, MasterCard, American Express, Discover)
- Debit card
- HSA card
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Provide card details
- Card number
- Expiration date
- Security code (CVV)
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Confirm payment details
- Verify all information is correct
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Get confirmation
- Write down your confirmation number
- Request a receipt if needed
The whole process typically takes less than 5 minutes, and your payment is posted immediately to your account!
Understanding Your Quest Diagnostics Bill
Before paying, it helps to understand what you’re looking at on your Quest bill:
Quest Diagnostics processes over 500,000 lab tests daily, making them one of the largest medical diagnostic companies in the US. Your bill will typically arrive within a week after your tests are completed.
On your bill, you’ll find:
- Tests performed
- Original cost of each test
- Insurance adjustments (if applicable)
- Your out-of-pocket responsibility
Remember: Quest bills are usually due within 30 days of the statement date.
Alternative Payment Methods
While paying by phone is convenient, Quest Diagnostics offers several other payment options:
Online Payment
You can pay your bill online at the Quest Diagnostics website (https://secure.questdiagnostics.com/ClientBilling/ClientBilling.action). You’ll need:
- Lab code
- Invoice number
If you can’t find your lab code, the customer service number (1.866.MYQUEST) can help.
Mail Payment
Send a check or money order using the payment coupon and envelope provided with your bill.
In-Person Payment
Visit any Quest Diagnostics patient service center to pay with cash, check, or card.
Autopay
Set up automatic monthly payments from a credit, debit, or HSA card so you never miss a due date.
What If I Can’t Pay My Full Bill?
If you’re having trouble paying your Quest Diagnostics bill, don’t worry! Quest offers several options:
Financial Assistance Programs
Uninsured or low-income patients may qualify for financial assistance that can reduce bills by up to 50% or more. Call the billing department at 1.866.MYQUEST to check if you qualify.
Payment Plans
Can’t pay the full amount at once? Quest Diagnostics can help set up a payment plan that fits your budget. Just call the billing number and ask about available options.
Common Questions About Quest Diagnostics Bill Pay
Can I pay someone else’s Quest bill?
Yes! You’ll need their account information, but you can absolutely pay for a family member or friend.
How long does it take for a phone payment to post?
Phone payments post immediately to the account, which is one of the biggest advantages of this payment method.
What if I don’t have my account number?
The representative can look up your account using your name, address, and date of birth if you can’t find your account number.
Can I use my FSA or HSA card?
Absolutely! Quest Diagnostics accepts both FSA and HSA cards as payment methods.
What if I think there’s an error on my bill?
If you spot a mistake, call 1.866.MYQUEST and explain the situation. The representative can help investigate and resolve billing errors.
Tips for Managing Your Quest Diagnostics Bills
Here are some helpful tips I’ve learned through my experiences with Quest billing:
- Keep all billing statements for tax purposes and your medical records
- Check your insurance coverage before having tests done when possible
- Ask for itemized statements if you need to submit for reimbursement
- Update your contact information if you move or change phone numbers
- Sign up for email notifications so you never miss a bill
Setting Up Autopay for Future Bills
To save time on future bills, consider setting up autopay:
- Log into your Quest Diagnostics online account
- Navigate to ‘Payment Information’
- Select ‘Setup / Edit Auto Pay Account’
- Enter your preferred payment information
- Review and confirm your setup
With autopay, your payments will be processed automatically either weekly for balances over $5 or monthly on your bill’s due date.
What Else Can Quest Diagnostics Billing Department Help With?
When you call 1.866.MYQUEST, the billing department can assist with more than just payments:
- Providing copies of billing statements
- Explaining charges and insurance coverage
- Setting up payment plans
- Updating insurance information
- Sending receipts for paid bills
- Resolving billing disputes
- Providing price estimates for future tests
My Personal Experience Paying Quest Bills
I recently had to get several tests done, and when I got my bill, I was a bit confused about some of the charges. I called the Quest Diagnostics phone number (1.866.MYQUEST) and was pleasantly surprised by how helpful the representative was!
They walked me through each charge, explained what my insurance had covered, and processed my payment quickly. The whole call took less than 10 minutes, and I had peace of mind knowing my bill was taken care of.
Final Thoughts
Paying your Quest Diagnostics bill by phone is one of the quickest and most convenient options available. With the official number (1.866.MYQUEST or 1.866.697.8378), you can speak directly with a representative who can process your payment and address any questions or concerns you might have.
Remember, if you’re facing financial difficulties, don’t hesitate to ask about assistance programs and payment plans. Quest Diagnostics offers several options to help make their services more accessible to everyone.
Now that you know how to pay your Quest bill by phone, you can handle your medical expenses with confidence and ease!
Quick Reference Guide
- Quest Diagnostics Bill Pay Phone Number: 1.866.MYQUEST (1.866.697.8378)
- Hours: Monday-Friday 7am-8:30pm, Saturday 7am-4:30pm
- Payment Methods: Credit card, debit card, HSA/FSA cards
- Information Needed: Account number and payment details
- Processing Time: Immediate posting to your account
- Other Payment Options: Online, mail, in-person, autopay
Have you used Quest Diagnostics bill pay by phone before? What was your experience like? Feel free to share any tips or tricks you’ve found helpful in managing your medical bills!

What can we help you find?
Frequently Asked Questions: Billing Services
The bill you received is for laboratory services provided by Quest Diagnostics, which were ordered by your doctor. This bill is for laboratory testing fees only and is separate from any bill you may have received from your doctor and/or paid at your doctors office.
Although you may not have physically visited a Quest Diagnostics location, your doctor may have sent your sample out to a Quest Diagnostics laboratory to be tested.
Please refer to the message on your Quest Diagnostics bill or the Explanation of Benefits (EOB) from your insurance company for more specific information about why you received a bill.
Here are some reasons why you might have rececived a bill:
- Insurance information was not received or the wrong insurance information was received on your test order
- The insurance company processed the claim and denied payment
- The insurance company processed the claim and applied the balance to your co-pay or deductible
- The insurance company did not respond to the claim
To view an example of the Quest Diagnostics bill, click here. Please note that this example may look somewhat different from your bill depending on where your tests were performed.
To see an example of where you can locate your bill number on your paper bill, click here.
For assistance in understanding your bill, please call the customer service phone number listed on your bill. You can also contact our online Customer Service.
Please send the requested information to the address listed on your bill. You can also call the customer service phone number listed on your bill, or contact our online Customer Service. If the message on your bill indicates that your insurance company needs more information from you in order to process your claim, please contact your insurance company directly.
Quest Diagnostics obtains diagnosis information from the ordering doctors office. If your insurance company denied your claim due to the diagnosis code, please contact your doctors office.
A draw fee is charged when a patient goes to one of our Patient Service Centers (PSC) for the drawing of a sample. Insurance may cover this fee. However, patients whose insurance does not cover the draw fee and uninsured patients are responsible for payment of the draw fee.
There are 2 reasons; that an additional test not originally ordered by your doctor would be performed. The first is that your doctor may have called the laboratory to request additional testing after the order was submitted. The second is that one of the tests your doctor ordered may have been a “reflex” test. Reflex testing may result in an additional test being performed depending on the results of the original test. The reflex test is performed to get more detailed information about the findings of the initial test.
Yes, if you have a MyQuest account, logging into your account will get you to your bill the fastest as you do not need to enter further verification information.
Yes. Please ensure you have your bill number and a form of payment and clickhere to pay your bill online.
It is important to note that payments submitted through any other website (third party service providers such as Doxo) are not managed by Quest and may require payment of additional fees of the payment processor which are not applied to your Quest Diagnostics invoice. Payments made through other websites will not be applied to your account on the same day submitted to the third party service providers.
All of us are concerned about web privacy and the security of the information we transmit over the Internet. When paying your bill online through the Quest Diagnostics hosted bill payment website, be assured that your information is secure.
Our application uses industry-standard SSL encryption on every page in the system. This is the same encryption and validation technology used by banks and brokerages to safeguard your financial information. To verify this system is delivered over a secure SSL connection, look for the SSL padlock in your browser.
For more information, see our privacy policy.
To pay your bill by mail, send your payment to the “Send Payments To” address listed on your bill.
Please send the Payment Coupon(s) attached to your bill(s) along with your payment. Write your bill number(s) on your check or money order to ensure proper credit is applied.
Our billing system generates a bill for each transaction. Due to patient privacy issues, our system does not store information regarding the patient from transaction to transaction. Each transaction generates a new bill number. Therefore, if paying online, the online bill number must match the actual paper bill so the payment can be applied to the correct bill.
A payment may be required at the time of service for all past due balances. Quest Diagnostics reserves the right to refuse laboratory services if you have a past due balance. When you visit a Quest Diagnostics Patient Service Center, you may be told when you have an outstanding balance for previous services. If you do have a balance, you will be asked to pay the balance in full (or a minimum amount) before we complete your service.
Quest Diagnostics offers payment plans which allow patients to pay in monthly installments until their balance is paid in full. We also offer a Financial Assistance Program that provides free or reduced-fee lab services. Reduced fees are based on federal guidelines for household income. Click here for more information.