Gastroenterologist surprise bills occur when a patient receives care at an in-network facility but gets a bill from an out-of-network provider involved in the procedure—typically an anesthesiologist, pathologist, or another specialist the patient did not choose or negotiate with directly. These charges arrive separately from the facility bill, weeks or even months later, and can total hundreds of dollars even when every visible provider was supposed to be in-network. A 2020 study of over 1 million colonoscopies found that 12.1% of procedures resulted in out-of-network claims despite in-network facilities and endoscopists, according to the American College of Physicians. The median unexpected bill was $418, but the full picture is worse: the same providers that caused these bills often appear multiple times—once from an anesthesiologist, again from a pathologist—making it possible for a single routine procedure to trigger more than one surprise charge.
Table of Contents
- Who Bills You Out of Network
- When Your Risk Is Highest
- What the No Surprises Act Protects (and Does Not)
- Steps to Take Before Your Procedure
- What to Do If You Receive an Unexpected Bill
- Frequently Asked Questions
Who Bills You Out of Network
Anesthesiologists are the leading source of surprise bills in colonoscopy. Out-of-network anesthesiologists were involved in 64% of the out-of-network claims, with a median surprise bill of $488, according to the American College of Physicians. These charges appeared even when deeper anesthesia was not medically necessary—meaning you may be billed by an anesthesia provider you never knew was involved.
Pathologists generate the second-most-common surprise bill, typically arriving separately and weeks after the procedure. Out-of-network pathology was involved in 40% of cases with a median surprise bill of $248. Pathology services may be billed by labs that are not employed by or contracted with the hospital, even though the tissue samples were processed as part of your procedure at an in-network facility.
When Your Risk Is Highest
Your risk of a surprise bill depends on what the procedure involves. Colonoscopies with polyp removal or other interventions had a 13.9% out-of-network billing rate, compared to 8.2% for screening-only procedures, according to the American College of Physicians.
If your doctor expects to remove a polyp or perform a biopsy, assume anesthesia and pathology involvement and ask in advance whether those providers are in-network. Even routine screening carries risk. A bill of $418 to $488 from an anesthesiologist, or $248 from a pathologist, can push out-of-pocket costs well above what you expected, especially if your insurance deductible is high or your maximum out-of-pocket is partially met.
What the No Surprises Act Protects (and Does Not)
The No Surprises Act, effective January 1, 2022, prohibits providers from balance-billing patients when they receive non-emergency care at an in-network facility from an out-of-network provider. However, the law does not prevent the bill from arriving—it only prevents the provider from billing you for the difference between what they charge and what your insurance pays.
The law requires facilities to provide written notice naming out-of-network providers and obtain written consent before a procedure, according to HHS guidance. The protection depends on your facility's compliance. If your hospital or endoscopy center failed to notify you in writing that an anesthesiologist or pathologist was out-of-network, or did not obtain your written consent, that provider cannot legally balance-bill you. If you did receive notice and consent forms, you can revoke written consent before the procedure to try to request an in-network provider instead.
Steps to Take Before Your Procedure
Before scheduling a colonoscopy or any procedure with your gastroenterologist, take these specific steps to reduce surprise bill risk: The American College of Physicians recommended that endoscopists and facilities partner with in-network anesthesia and pathology providers, and that patients verify network status of all involved providers before the procedure.
- Call your gastroenterologist's office and ask: Are the facility, endoscopist, anesthesiologist, and pathologist all in-network with your insurance?
- Request that your procedure use in-network anesthesia and pathology providers specifically. Ask the office to confirm this request is documented.
- If any provider is out-of-network, ask whether the facility can substitute an in-network provider or whether the procedure can proceed without that service.
- At the facility, before the procedure, request written confirmation that you have been notified of all out-of-network providers and ask whether you need to sign consent forms or revoke consent.
What to Do If You Receive an Unexpected Bill
If a surprise bill arrives after your procedure, do not assume it is correct. First, verify that the provider was genuinely out-of-network at the time of service using your insurance company's provider directory. Second, check whether the provider is prohibited from balance-billing you under the No Surprises Act—they are, if the service was non-emergency, at an in-network facility, and you received advance written notice and consent forms.
Contact your insurance company directly and provide the claim details. Explain that the service was performed at an in-network facility and ask whether the No Surprises Act applies. Request that your insurance company enforce the balance-billing prohibition if applicable. If the provider attempts to collect from you, file a complaint with your state's insurance commissioner or the federal Department of Labor, which enforces the No Surprises Act for most health plans.
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Frequently Asked Questions
What is a surprise bill?
A bill from an out-of-network provider for services delivered at an in-network facility. You did not choose this provider, and the bill arrives separately weeks or months later.
Can I refuse anesthesia to avoid a surprise bill?
Not always. Anesthesia decisions depend on the procedure type and your medical condition. Ask your doctor whether sedation is medically necessary and whether an in-network provider can deliver it.
Does the No Surprises Act cover emergency procedures?
No. The law applies only to non-emergency care. Emergency procedures are excluded from the balance-billing prohibition.
What if my facility did not notify me of out-of-network providers?
The facility failed to comply with the No Surprises Act. The out-of-network provider cannot legally balance-bill you. Report the facility to your state's insurance commissioner. —