Out-of-network bills are one of the most common sources of medical billing shock, and one of the least understood. You chose an in-network hospital. You followed the rules. And somehow you still ended up with a bill from a provider you never agreed to see. Here's what you can do about it.
Quick answer
Get the EOB for each bill first and check whether the claim was processed in or out of network. If an out-of-network provider treated you at an in-network facility, or the care was an emergency, the No Surprises Act likely limits you to in-network cost-sharing. Where it does not apply, negotiate directly and ask what the Medicare rate is for the service.
Why you end up with out-of-network bills
Even when you go to an in-network hospital, not every provider who treats you is in-network. The most common culprits:
- Anesthesiologists, Often contracted separately from the hospital and frequently out-of-network
- Radiologists and pathologists, Read your scans or labs from off-site and bill separately
- ER physicians, May work for an independent physician group, not the hospital
- Surgical assistants and specialists, Called in during procedures without your knowledge
- Hospitalists, The doctors who manage your care during an inpatient stay
You didn't choose these providers, they were assigned to you. Yet you can still receive bills for their out-of-network rates. The good news is that the law increasingly protects you in exactly these situations.
The next step is a phone call, a hold queue, and a supervisor who has heard it before. That part we do for you, and only charge if the bill comes down.
Let us make the callDoes the No Surprises Act protect you?
The No Surprises Act, effective January 2022, is specifically designed for situations like this. It protects you from balance billing in three main scenarios:
- Emergency care, You cannot be balance billed for emergency services at any facility, regardless of network status
- Non-emergency care at in-network facilities, If you receive non-emergency care at an in-network facility from an out-of-network provider you didn't specifically choose (like an anesthesiologist), you're protected
- Air ambulance, Out-of-network air ambulance services are covered under the Act
In these protected situations, you pay only your in-network cost-sharing amount, your regular deductible, copay, or coinsurance. The provider and your insurer sort out the rest between themselves.
One major gap: ground ambulance services are not covered by the federal Act, so an out-of-network ground ambulance can still leave you with a large balance. If that's your situation, see our guide on how to lower an ambulance bill.
If your bill falls into one of these categories, you may owe significantly less than the bill states. Call your insurer immediately and reference the No Surprises Act by name.
Step 1: Get your EOB and understand what happened
Before doing anything, get the Explanation of Benefits (EOB) from your insurer for each bill. The EOB shows:
- Whether the claim was processed as in-network or out-of-network
- What your insurance paid (if anything)
- What you're responsible for according to your plan
- Whether any portion was denied and why
Compare the EOB patient responsibility amount to what the provider is billing you. If the provider is charging more than the EOB says you owe, that's potentially illegal balance billing and should be disputed immediately.
Step 2: Dispute with your insurer
If the No Surprises Act applies to your situation, contact your insurer and state clearly:
“I received care from an out-of-network [provider type] at an in-network facility. I believe this falls under the No Surprises Act protections. I am requesting that this be reprocessed at my in-network cost-sharing rate.”
Document every call, representative name, date, reference number. Follow up in writing if the issue isn't resolved within 30 days.
If your insurer is unresponsive, you can file a complaint with the federal No Surprises Help Desk at 1-800-985-3059 or at cms.gov.
Step 3: Negotiate directly with the provider
Even in cases where legal protections don't fully apply, out-of-network providers often accept much less than their billed rate, especially if you can pay something now. Ask:
- “What is the Medicare reimbursement rate for this service?” (This is public information and a common benchmark)
- “What would you accept as payment in full if I can settle this within 30 days?”
- “Can you match the in-network rate my insurance would have paid?”
Many providers would rather accept 50-60% of billed charges today than chase collections for months. Always get any agreed amount in writing before you pay.
Step 4: File a formal appeal if needed
If your insurer denies coverage or processes the claim incorrectly, file a formal appeal. You have the right to appeal any claim denial, and external reviewers, who are independent of your insurer, overturn decisions roughly 40% of the time.
When to get help
Out-of-network disputes often involve multiple parties, the provider, your insurer, and sometimes a third-party billing group. It can become a complex, frustrating loop. Agent Loop is built for exactly these situations. Our clever fox identifies which protections apply, coordinates with your insurer, and negotiates directly with the provider. No savings, no fee.
Sources
- CMS, No Surprises Act
The federal surprise billing protections, and the independent dispute resolution process for out-of-network payment disagreements.
- HealthCare.gov, External review
You may request an independent external review within four months of a final denial, standard reviews are decided within 45 days, and the insurer is required by law to accept the reviewer's decision.
- HealthCare.gov, Internal appeals
You must file an internal appeal within 180 days of being notified your claim was denied, and the insurer must decide within 30 days for pre-service and 60 days for post-service claims.
- CMS, How to read an explanation of benefits
An explanation of benefits shows the total charges for a visit and is explicitly not a bill; it shows what the plan covered and what you will owe when the provider invoices you.
Sources last checked 27 July 2026. Medical billing rules change, so if you spot something out of date, tell us and we will correct it.
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