A radiologist surprise bill occurs when you receive an out-of-network imaging bill after obtaining imaging at an in-network hospital or surgical center—a facility where your insurance has negotiated rates. The No Surprises Act, effective January 1, 2022, protects you from most of these bills by capping what radiologists can charge you to your plan's copay, coinsurance, or deductible, not the full out-of-network amount.
Before this law, out-of-network radiologists regularly charged patients hundreds of dollars more than in-network rates for the same scan. The law does not eliminate radiologist surprise bills entirely—gaps remain, and insurers sometimes violate the protections. Understanding when you are covered and how to respond to a bill protects you from paying charges you legally owe nothing.
Table of Contents
- When the No Surprises Act Protects You
- The Cost of Out-of-Network Radiology Before Federal Protection
- Critical Gaps in the Law That Still Leave Patients Vulnerable
- What to Do If You Receive a Radiologist Bill
- Unresolved Enforcement Issues Between Radiologists and Insurers
- Frequently Asked Questions
When the No Surprises Act Protects You
The No Surprises Act caps your liability to the patient cost-sharing amount you would owe to an in-network provider—your copay, coinsurance, or deductible—when an out-of-network radiologist provides imaging at an in-network facility. This applies to emergency services and non-emergency imaging at hospitals, surgical centers, and other in-network facilities where you did not choose the radiologist.
The law applies whether the radiologist is independently contracted, employed by the hospital, or part of a radiology group. Radiologists cannot collect the difference even if you sign a form authorizing them to do so—the balance-billing prohibition cannot be waived. If you receive a bill for more than your cost-sharing amount for imaging performed at an in-network location, the bill likely violates the law.
The Cost of Out-of-Network Radiology Before Federal Protection
Out-of-network radiologists were among the worst surprise-bill offenders. Before the No Surprises Act, out-of-network radiologist charges averaged $194 per imaging read—452% of Medicare reimbursement rates—with some out-of-network claims 500 to 600% above typical in-network costs. A CT scan that cost $300 in-network could generate a $1,500 or $2,000 out-of-network bill from the radiologist alone.
These inflated charges were partly possible because radiologists worked at facilities where you could not choose or avoid them. You did not know the radiologist was out-of-network until the bill arrived weeks later. The disparity between in-network and out-of-network radiology rates was far wider than most other medical services.
Critical Gaps in the Law That Still Leave Patients Vulnerable
The No Surprises Act does not cover all radiologist imaging scenarios. The law does not apply when you are treated entirely at an out-of-network facility, or when you knowingly choose an out-of-network provider. If you schedule an MRI at an independent imaging center rather than at your hospital, you have no federal balance-billing protection for out-of-network radiologists there.
A second gap persists: patients have received balance bills for out-of-network imaging services during visits with in-network outpatient providers, because these "almost ancillary" services sometimes fall outside the Act's scope of covered protections. The boundaries of what counts as an "ancillary service" at an in-network facility are still being tested. If you received a radiologist bill and it was for imaging at an out-of-network facility or a facility where you specifically selected an out-of-network provider, the No Surprises Act may not apply.
What to Do If You Receive a Radiologist Bill
First, verify the facility where you had the imaging. If it was an in-network hospital, surgical center, or outpatient facility, the radiologist's balance bill likely violates federal law. Contact the radiology group or the facility's patient financial services and cite the No Surprises Act, stating that the radiologist cannot charge you more than your plan's cost-sharing amount.
Request an itemized explanation of charges and the radiologist's in-network status with your plan. Keep all documentation: the bill, the imaging authorization, your insurance card, and any correspondence. If the radiologist or facility does not reverse the bill after your request, file a complaint with your state insurance commissioner or your employer's benefits administrator.
Unresolved Enforcement Issues Between Radiologists and Insurers
The law's protections apply to patients, but enforcement between radiologists and insurers remains turbulent. Radiology disputes account for 19% of federal independent dispute resolution cases, where radiologists won approximately 88% of out-of-network payment disputes in the first half of 2025, with some receiving payments 500 to 600% above the qualifying payment amount. The qualifying payment amount is the 2019 median in-network rate indexed for inflation and serves as the benchmark for what is considered a fair payment.
However, radiology groups simultaneously report that insurers are improperly reopening resolved cases, mislabeling claims as ineligible for dispute resolution, and declining to disclose how they calculate the qualifying payment amount. These insurer practices do not directly affect your bill as a patient—your cost-sharing cap remains in place—but they reflect ongoing tension over out-of-network radiology payments that may affect care delivery.
Frequently Asked Questions
Can a radiologist refuse to perform imaging if I cannot pay the full out-of-network bill?
No. Once the No Surprises Act applies, the radiologist must perform the imaging and can collect only your cost-sharing amount. Refusing care based on the patient's unwillingness to pay the full balance-bill amount would violate the law.
What if my insurance company sends me a bill instead of the radiologist?
Your insurance company is responsible for paying the radiologist's allowed amount once the claim is properly submitted. If your insurer sends you a bill for an in-network facility's out-of-network radiologist imaging, contact your insurer and cite the No Surprises Act. The bill should be corrected.
Is a self-pay patient without insurance covered by the No Surprises Act?
No. The Act applies only to patients with health insurance. Uninsured patients are not protected, and out-of-network radiologists can bill them the full amount.
Can the radiologist ask me to sign away my No Surprises Act protections?
No. Federal law prohibits radiologists and all ancillary service providers from collecting additional charges even with signed patient authorization. Any form asking you to waive the balance-billing protection is unenforceable.