Quest Diagnostics is a national leader in medical laboratory services, helping millions of patients and healthcare providers with fast, accurate lab results. To assist patients with paying for laboratory services not covered by insurance, Quest offers secure, digital payment solutions, flexible billing support, and a streamlined experience for one-time or recurring payments.
https://billing.questdiagnostics.com/ClientBilling/ClientBilling.action
https://www.questdiagnostics.com/patients/billing-insurance
Login Process
- Visit the Quest Diagnostics billing portal or the main patient billing and insurance page.
- Have your invoice number and lab code ready—both are printed on your paper or digital bill.
- The portal enables you to look up your account, review balances, itemized statements, and make payments without a full account registration.
- For ongoing account management or communication preferences, register for a Quest MyQuest account.
Pay as Guest
- Use the QuickPay or guest payment option for fast, one-time payments—no login required.
- Enter your invoice number, lab code, patient date of birth, and ZIP code as prompted.
- Review your bill, choose your payment method, pay securely, and receive an instant digital receipt.
How to Pay Online
- On the portal, select from payment options: credit card (Visa, MasterCard, Discover, American Express), debit card, Apple Pay, or direct bank withdrawal (ACH).
- Pay your entire balance, a partial amount, or schedule future payments if eligible.
- Download itemized bills, update insurance, or dispute a charge directly from the portal.
- For patients with MyQuest accounts, log in to manage notification and communication preferences.
Pay by Phone
- Call Quest Diagnostics Billing Customer Service at 1-866-MYQUEST (1-866-697-8378).
- Use the automated phone system for payments, or speak to a billing representative during business hours.
- Phone payments accept credit cards, HSA/FSA cards, and bank accounts.
- For DLO bills or special billing, call 1-888-241-7742 and follow prompts for billing.
Pay by Mail
- Mail checks or money orders (never cash) to the payment address provided on your Quest Diagnostics invoice.
- Always include your invoice number and lab code for proper crediting.
- Attach the payment coupon from your bill and keep records for confirmation.
Pay in Person
- Most Quest Patient Service Centers do not handle billing payments directly; all bills should be paid online, by phone, or by mail.
- If your provider’s office accepts payments for lab services, follow their instructions and save your receipt.
Address and Contact Information
- Customer Service: 1-866-MYQUEST (1-866-697-8378)
- Patient Billing Portal: https://billing.questdiagnostics.com/ClientBilling/ClientBilling.action
- Billing Resources & Support: https://www.questdiagnostics.com/patients/billing-insurance
- Mailing Address: As printed on your invoice; check your paper bill for the latest address.
- General Inquiries: Online chat and email support available via the Quest billing page.
Operating Hours
- Online portal: 24/7 for secure bill pay and account management.
- Phone support: Monday–Friday, 8:00 a.m.–6:00 p.m. (local time).
- Mailed payments: Processed during regular business days.
Common Issues with Bill Pay and Troubleshooting
- Invoice confusion: Many patients get a Quest bill even if they never visited a Quest facility (provider may have sent specimens directly).
- Insurance denials or balance issues: Quest bills you only for your patient responsibility after insurance; update insurance info online for adjustments.
- Payment posting delays: Online and phone payments usually process immediately; mailed checks take several days.
- Dispute a charge: Use the billing portal to dispute, update insurance, or call billing support.
- Portal/login problems: Contact support or use guest payment features for quick resolution.
- Scams: Only use official Quest links; beware of fake billing emails or phone calls.
Payment Plans, Financial Assistance, or Medical Debt Support
- Payment plans: If eligible, Quest Diagnostics allows patients to pay in monthly installments until the balance is resolved.
- Financial assistance: Quest offers reduced or free lab services for qualified low-income patients based on federal income guidelines.
- Apply for assistance or set up a payment plan directly online or by calling billing support.
- Medical debt or hardship: Billing advocates can help discuss negotiations, assistance, and application processes to avoid collections.
- For full debt details, always request itemized bills and written records of payment plans or special arrangements.
Quest Diagnostics’ secure bill pay system and responsive billing support help patients resolve balances efficiently and keep lab results, insurance issues, and billing questions easy to manage. Use their portal, phone, or mail for flexible bill payment—and explore assistance resources when medical costs become a concern.