Our goal is to make the billing process as simple and transparent as possible.
GTC is in network with some insurances - contact our billing department to see if we are in-network with your patient's insurance.

Here you will find all the information you need to understand your bill and make payments.
- Explanation of Charges: Each bill will include a detailed breakdown of the services provided, including the type of tests performed, the date of service, and the cost for each test.
- Insurance Information: Any payments or adjustments made by your insurance company will be clearly listed.
- Patient Responsibility: This section outlines the portion of the bill you are responsible for, including any co-pays, deductibles, or non-covered services.
Do you need help?
Payment Options
We offer several convenient ways to pay your bill:
- Pay by phone: We use our secure online payment system to pay your bill using a credit or debit card.
- By Mail: Send a check or money order to the address provided on your bill.
- Payment Plans: If you are unable to pay your bill in full, we offer flexible payment plans. Please contact our billing office to discuss your options.
Insurance and Billing Inquiries
We do our best to bill all insurance on behalf of the patients, but payment isn’t always guaranteed.
- Billing Questions: If you have any questions about your bill or need assistance, our billing team is here to help. Please contact us at 877-967-7734 or gtcbilling@genomictestingcooperative.com.
- Financial Assistance: We offer financial assistance programs for eligible patients. Please visit our Financial Assistance page or contact our billing office for more information.
- Insurance Verification: It is also recommended that you check with your insurance provider to understand your coverage and any out-of-pocket expenses.
Frequently Asked Questions
- What if I can’t afford to pay my bill?
We understand that medical bills can be unexpected. Please contact our billing office to discuss payment plans or financial assistance options. - Why did my insurance only cover part of the bill?
Insurance coverage varies by plan. We encourage you to contact your insurance provider for details about your coverage and any reasons for partial payment.
Contact Us
If you need further assistance, please don’t hesitate to reach out:
- Billing Office: 877-967-7734
- Fax: 949-301-9550
- Email: gtcbilling@genomictestingcooperative.com
- Office Hours: 6:30am – 4:30pm PST