Bill pay options for patients

CSI Laboratories provides pathology testing and diagnostics to support oncologists and community hospitals across the U.S. and the Caribbean provide patient care. We provide our clients and patients with efficient, dependable, and high-quality services—including our bill pay options.

For questions, please call 844-658-1656. Our hours of operation are Monday – Friday, 7:30 a.m. – 6 p.m. Eastern time.

Or, please use the form on the right to contact us and a member of our team will get in touch with you.

When contacting us, please have your account number (found on your bill) and insurance policy number (from your insurance card) available.

Update your insurance information

If you need to update your insurance information, please give us a call. You’ll need your account number (found on your bill) and insurance policy number (on your insurance card) to make any changes.

Our hours of operation are from Monday to Friday, 7:30 a.m. to 6 p.m. Eastern time


Frequently asked questions about billing
Received a bill from our pathology laboratory and have questions? Get answers to frequently asked questions below or contact our Billing Customer Service team at 844.658.1656.

Certain payors prefer that the separate companies performing laboratory services each bill for their own services, meaning the physicians bill for their services and the laboratory bills for its services.

When these services are performed and billed separately, patients may see two EOBs (Explanation of Benefits) from their insurance company, one for the “professional component” (reading the slide or other results) and one for the “technical component” (preparing the specimen or performing tests). If a co-payment is required from the patient, you will possibly receive two invoices, one from each company or organization. If you have any questions, please contact the billing office listed on the invoice you receive.

Typically, it takes 60 days or more for insurance companies to respond to CSI Laboratories’ claims. Sometimes the insurer’s response to CSI Laboratories is that more information is needed in order to process the claim. The billing cycle then restarts and may repeat itself several times.

CSI Laboratories attempts to collect our claims from insurance compaies without bothering the patient in the process. As a result, by the time the insurer calculates your financial responsibility and you receive an invoice from CSI Laboratories, it may be more than four or five months after the date of the visit to your physician.

An Explanation of Benefits (EOB) is a notification from your insurance company after it has processed a claim. An EOB is not a bill. It is only an estimate of your financial responsibility. CSI Laboratories will review the initial determination from your insurance company and may take additional action that could result in a change to your financial responsibility listed on the EOB. The only time you should pay CSI Laboratories is if you receive an invoice from us.

If you or your insurance company received an invoice from CSI Laboratories, it is because we provided pathology lab services to your physician on your behalf. You may have heard that your specimen or biopsy was sent to the lab. CSI Laboratories has several locations across the country. Your specimen or biopsy was reviewed by a pathologist, which is a doctor who has specialization in the diagnosis of disease. At CSI Laboratories, all of the pathologists have specialization in their specific field of pathology.

Co-insurance, co-payments, and deductibles: Your invoice from CSI Laboratories usually pertains to a deductible or copayment according to the terms of your benefits with your insurer.

Incorrect or incomplete information:
You may receive an invoice from CSI Laboratories if it appears that you do not have insurance coverage, or if the information provided to CSI Laboratories was incomplete or inaccurate. Please call our Billing Customer Service team at 844-658-1656 to correct the information for re-filing and also call your doctor’s office to ensure that they have complete and correct information. Once we receive the corrected information, we will file with your insurance company, and you will receive an updated invoice once your insurance company processes the claim.

No response from insurance company:
You may receive an invoice from CSI Laboratories if your insurer does not respond in a timely manner to a claim submitted. Please call our Billing Customer Service team at 844-658-1656 to ensure that we have the correct contact information for your insurance provider, and we will resubmit the claim to your insurer.

Payment information:
To pay via check or money order, please mail payment to P.O. Box 841647, Dallas, Texas 75284.

CSI Laboratories will submit all secondary, or supplemental, insurance claims on your behalf. If you receive an invoice from CSI Laboratories and believe that a secondary claim has not been submitted, please call our Billing Customer Service team at 844-658-1656 to verify. (Be sure to provide each doctor’s office with the necessary information on all of your insurance policies prior to any visits, procedures or tests.