Quest Diagnostics phone payment: 1-866-697-8378
Quest Diagnostics accepts bill payments by phone at 1-866-697-8378. This automated line is available 24 hours a day, seven days a week. You will need your account number (found on your bill or statement) and a payment method — debit card, credit card, or bank account information — to complete the transaction.
The phone system processes payments immediately, though the transaction may take one to two business days to appear in your account. If you call during business hours and reach a representative, they can answer questions about your bill balance or payment history before you pay. Outside business hours, the automated system handles payments only.
Quest also offers other payment methods if phone payment does not work for you: online payment through your Quest account portal, mail payment to the address on your bill, or in-person payment at a Quest Patient Service Center. Each method has different processing times and may carry different fees depending on your payment type.
Key Takeaways
- Call 1-866-697-8378 to pay by phone 24/7 using a debit card, credit card, or bank account.
- Have your account number from your bill ready before you call, as the system will ask for it.
- Phone payments process immediately but may take one to two business days to show in your account.
- If you have questions about your bill, call during business hours to speak with a representative before paying.
- Quest offers online, mail, and in-person payment options as alternatives to phone payment.
What information you need before calling
Gather these items before you dial the phone number. Having them ready will make the call faster and reduce the chance of errors.
Your account number appears on your Quest bill or statement, usually near the top. If you cannot find a physical bill, log into your Quest account online to view your statement and locate the account number there. The system will ask for this number early in the call.
Your payment method must be a debit card, credit card, or checking or savings account. If you use a card, have the card number, expiration date, and three-digit security code ready. If you use a bank account, have your routing number and account number available. Quest does not accept cash, checks, or gift cards over the phone.
The amount you want to pay should match your bill, though you can pay a partial amount if you choose. Your bill statement shows the total due and the due date. Paying after the due date may result in a late fee or impact to your credit report, depending on whether Quest reports to credit bureaus.
How the phone payment process works
When you call 1-866-697-8378, an automated system answers and guides you through a series of prompts. The system will ask you to enter your account number using your phone keypad, then confirm the amount owed on your account.
Next, you will enter your payment method information. If you are using a card, the system will ask for the card number, expiration date, and security code. If you are using a bank account, you will enter your routing number and account number. The system repeats back what you entered so you can verify it is correct before the transaction processes.
Once you confirm, the system processes the payment and provides a confirmation number. Write down this number for your records. The payment is submitted immediately, but it may take one to two business days for the charge to appear on your card or bank account and for Quest to record it as received.
Payment processing time and when the money reaches Quest
A payment made by phone is submitted to Quest's payment processor right away, but the actual movement of money takes time. Card payments (debit or credit) typically post to your card within one business day and reach Quest within one to two business days. Bank account payments (ACH transfers) usually take two to three business days to clear your bank and arrive at Quest.
If your bill is due on a specific date, do not wait until that day to pay by phone. Call at least two business days before the due date to ensure the payment reaches Quest on time. If you miss the due date, Quest may charge a late fee or report the late payment to credit bureaus, depending on your account type and Quest's policies.
You can check whether your payment has been received by logging into your Quest account online or calling the same number to speak with a representative during business hours. They can tell you the current status of your payment and your account balance.
Fees and costs for phone payment
Quest Diagnostics does not charge a fee for paying by phone. The payment line is free to call, and there is no surcharge for using the automated system or speaking with a representative.
However, your bank or card issuer may charge a fee if you use a credit card to pay a medical bill. Some credit card companies treat medical payments as cash advances or charge a higher fee for certain types of transactions. Check with your card issuer before you pay if you are concerned about fees.
If you pay from a checking or savings account and your bank charges a fee for ACH transfers, that fee comes from your bank, not from Quest. Most banks do not charge for outgoing ACH payments, but some accounts or banks may. Review your bank's fee schedule or call your bank to confirm.
What to do if you cannot pay the full amount
You can pay a partial amount by phone. When the automated system asks how much you want to pay, enter an amount less than the total due. The remaining balance will stay on your account and may accrue interest or late fees depending on Quest's billing terms.
If you are unable to pay and need to discuss a payment plan or hardship option, you must speak with a representative. Call 1-866-697-8378 during business hours (typically Monday through Friday, 8 a.m. to 5 p.m. Eastern time, though hours vary) and ask to speak with a billing representative. They can discuss whether Quest offers payment arrangements, financial hardship programs, or other options for your situation.
Some Quest locations may work with third-party collection agencies if your bill goes unpaid for a long time. Addressing the bill early — even with a partial payment or a conversation about a plan — is better than waiting for collection action.
Other ways to pay a Quest bill
If phone payment is not convenient, Quest offers several alternatives. Online payment through your Quest account portal is available 24/7 and works the same way as phone payment — you enter your account number and payment method, and the transaction processes immediately. To pay online, log into your account at quest.com or through the Quest mobile app.
Mail payment takes longer but requires no technology. Write a check or money order, include your account number on the check, and mail it to the address shown on your bill. Mail payments typically take five to ten business days to arrive and be processed, so send payment well before your due date.
In-person payment at a Quest Patient Service Center is an option if you have a location near you. You can pay by cash, card, or check at the front desk. Call ahead to confirm the location accepts bill payments and to ask about hours, as not all centers handle billing.
Frequently Asked Questions
Can I pay someone else's Quest bill by phone?
You can pay if you have the account number and are authorized to do so, but Quest's system is set up for the account holder to pay. If you are paying on behalf of someone else, call during business hours and ask to speak with a representative. They can confirm whether the account allows third-party payments and may ask for written authorization.
What if I do not have my account number?
You can find your account number on your bill, in your online Quest account, or by calling 1-866-697-8378 during business hours and speaking with a representative. Have your name, date of birth, and the phone number associated with your account ready when you call. The representative can look up your account and provide the number.
Is my payment information safe when I pay by phone?
Quest's phone payment system uses encryption and security measures to protect your payment information. However, if you are uncomfortable entering card or bank details over the phone, you can pay online through the Quest portal or by mail instead. Both methods are secure alternatives.
Can I get a refund if I overpay?
If you pay more than you owe, Quest will typically issue a refund or credit the overpayment to your account. Call 1-866-697-8378 during business hours to request a refund, or log into your online account to see whether a credit has been applied. Refunds by check usually take one to two weeks.
What happens if my payment fails?
If your card is declined or your bank account information is invalid, the system will tell you immediately and the payment will not process. Verify your payment method information and try again, or use a different card or account. If problems continue, call during business hours to speak with a representative who can troubleshoot the issue.