Patients across the country have been blindsided by thousands of dollars in anesthesiology bills after being assured their procedures would be fully covered — and now lawsuits are challenging these practices on multiple fronts. One Texas woman received a bill for nearly $6,000 after an epidural at an in-network hospital, only to discover the anesthesiologist who administered it was not on her insurance plan. She had no say in choosing the provider, no warning that a separate bill was coming, and no realistic way to shop around while in labor. Her experience is far from unique, and it sits at the center of a growing legal and regulatory battle over out-of-network anesthesiology charges. The problem runs deeper than individual billing disputes.
The Federal Trade Commission sued U.S. Anesthesia Partners (USAP) and private equity firm Welsh, Carson, Anderson & Stowe in September 2023, alleging a years-long scheme to consolidate anesthesiology practices in Texas, drive up prices, and crush competition. In December 2025, a federal judge allowed a patient class action to proceed against USAP, ruling that plaintiffs plausibly alleged the company “exploited its use” through consolidation that artificially inflated prices statewide. Meanwhile, insurers have filed their own suits against anesthesia groups for gaming the federal No Surprises Act’s arbitration process to extract inflated payments.
Table of Contents
- Why Are Anesthesiologist Groups Facing Lawsuits Over Out-of-Network Charges Patients Were Told Would Be Covered?
- What Federal Protections Exist Under the No Surprises Act — and Where Do They Fall Short?
- How UnitedHealthcare and Other Insurers Are Fighting Back Against Anesthesia Groups
- What Should Patients Do If They Receive a Surprise Anesthesiology Bill?
- The Private Equity Problem Behind Anesthesiology Consolidation
- Anthem’s Controversial Policy and the Industry Backlash
- Where the Fight Over Anesthesiology Billing Goes From Here
- Frequently Asked Questions
Why Are Anesthesiologist Groups Facing Lawsuits Over Out-of-Network Charges Patients Were Told Would Be Covered?
The core issue is structural. Patients choose a hospital, verify it is in-network, and reasonably assume every provider involved in their care will also be covered. But anesthesiologists are typically assigned by the facility, not selected by the patient. When an anesthesia group operates outside a patient’s insurance network — even inside an in-network hospital — the patient can end up holding a bill they never anticipated and never agreed to. Multiple patients have reported receiving surprise bills from NorthStar Anesthesia for services at in-network hospitals, despite being told that outside bills would only come from physician providers, not from ancillary services like anesthesia. The FTC’s case against USAP illustrates how consolidation magnifies the problem.
According to the complaint, USAP systematically acquired nearly every large anesthesia practice in Texas and raised the acquired groups’ rates to USAP’s higher pricing upon acquisition. By cornering the market, USAP could refuse to join insurance networks or negotiate far higher out-of-network rates, knowing patients had no alternative. The December 2025 ruling that allowed the patient class action to proceed signals that courts are taking seriously the argument that this consolidation directly harmed consumers through inflated charges. The pattern extends beyond Texas. Commonwealth Anesthesia in the Richmond, Virginia area filed nearly 1,500 cases against patients for money owed for treatment from 2019 through 2021, making it one of the most active medical creditors in the region. These lawsuits targeted patients who could not or would not pay bills that in many cases arose from out-of-network charges they did not expect. For patients, the combination of surprise billing and aggressive collections created a system where the deck was stacked against them before they ever entered an operating room.
What Federal Protections Exist Under the No Surprises Act — and Where Do They Fall Short?
Since January 2022, the federal No Surprises Act has banned out-of-network charges for ancillary services — including anesthesiology — furnished by out-of-network providers at in-network facilities. Under the law, patients receiving emergency care or treated at in-network hospitals cannot be balance-billed by out-of-network anesthesiologists. Instead, billing disputes are resolved between the provider and the insurer, with the patient held harmless at their in-network cost-sharing amount. The impact has been measurable. A Government Accountability Office report published on February 19, 2026 analyzed 18 million professional anesthesiology claims and found that in-network claim rates improved after the No Surprises Act took effect.
Anesthesiology claims at ambulatory surgery centers had declined from 96.8% to 94.4% in-network between 2019 and 2021, then recovered to 96.8% by 2023. The trend of declining in-network participation reversed course after implementation of the law, suggesting the NSA pressured more anesthesia groups to join insurance networks rather than rely on out-of-network billing. However, the law does not solve every problem. If a patient receives anesthesia services at a facility that is itself out of network, the No Surprises Act’s balance billing protections may not apply outside of emergency situations. Patients who elect to go to an out-of-network facility for a scheduled procedure could still face out-of-network anesthesiology charges. Additionally, the law’s arbitration process — designed to resolve payment disputes between providers and insurers — has itself become a battlefield, with insurers alleging that some anesthesia groups are abusing the system to extract payments far above what they would receive through normal in-network contracts.
How UnitedHealthcare and Other Insurers Are Fighting Back Against Anesthesia Groups
The conflict is not limited to patients versus providers. UnitedHealthcare filed five separate lawsuits against NorthStar Anesthesia, alleging the company abused the No Surprises Act’s independent dispute resolution (IDR) process to obtain higher out-of-network payments than it would have received through standard network contracts. The insurer argued that NorthStar strategically remained out of network to exploit the arbitration system, submitting inflated rate demands through the IDR process rather than negotiating reasonable in-network rates. This tactic — sometimes called “strategic out-of-network billing” — works because the IDR process considers multiple factors when determining payment, including the provider’s typical charges.
If an anesthesia group sets artificially high out-of-network rates, those rates can influence arbitration outcomes in the group’s favor. UnitedHealthcare’s lawsuits contend this undermines the purpose of the No Surprises Act, which was designed to protect patients and create fair payment standards, not to hand providers a more profitable alternative to joining insurance networks. The insurer side of this fight matters to patients because costs flow through the system. When anesthesia groups extract above-market payments through arbitration, those costs contribute to rising premiums. And when insurers respond with aggressive countermeasures — as Anthem Blue Cross Blue Shield did in January 2026 by implementing a policy reducing facility payments by 10% if any services are rendered by out-of-network providers across 11 states — hospitals and patients can get caught in the crossfire.
What Should Patients Do If They Receive a Surprise Anesthesiology Bill?
The first step is determining whether the No Surprises Act applies to your situation. If you received anesthesia services at an in-network facility or during emergency care after January 1, 2022, you are likely protected from balance billing. You should not owe more than your in-network cost-sharing amount — your copay, coinsurance, or deductible — regardless of the anesthesiologist’s network status. If a provider sends you a bill that exceeds this amount, you can file a complaint with the federal No Surprises Help Desk or your state’s insurance department. However, the process is different depending on whether you have employer-sponsored insurance, an individual marketplace plan, or a state-regulated plan. Federal protections apply broadly, but some states have their own surprise billing laws that may offer additional protections or different complaint processes.
For bills that predate the No Surprises Act (before January 2022), federal protections do not apply, though some states had their own laws in place earlier. Patients with older surprise bills may need to negotiate directly with the provider, request an itemized bill, or consult with a patient advocate. The tradeoff patients face is between paying a disputed bill to avoid collections damage and fighting the charge through formal channels. Disputing a bill takes time — sometimes months — and during that period some providers may send the account to collections. Under the No Surprises Act, providers are prohibited from sending protected bills to collections while a dispute is pending, but not every provider complies. Documenting everything in writing, requesting that the provider confirm in writing that the bill is on hold during a dispute, and monitoring credit reports are practical steps to protect yourself during the process.
The Private Equity Problem Behind Anesthesiology Consolidation
The FTC’s case against USAP and Welsh, Carson, Anderson & Stowe put a spotlight on how private equity ownership of medical practices can harm patients. According to the FTC’s complaint, Welsh Carson invested in USAP specifically to roll up anesthesiology practices across Texas, creating a dominant player with enough market power to dictate prices. Upon acquiring a practice, USAP would raise that group’s rates to its own higher rates — not because the quality of care improved, but because reduced competition gave USAP the use to demand more. In May 2025, the FTC approved a final consent order with Welsh Carson resolving the charges against the private equity firm, though the case against USAP itself continued.
The December 2025 ruling allowing the patient class action to proceed was significant because it confirmed that individual patients could pursue claims based on the theory that USAP’s consolidation strategy directly inflated the prices they paid. This matters beyond Texas because the private equity playbook of acquiring and consolidating medical specialty practices is not unique to anesthesiology or to a single state. Patients should be aware that consolidation does not always result in higher prices, and not every private-equity-backed practice engages in the kind of conduct alleged against USAP. But the FTC’s willingness to bring an antitrust case — and a federal court’s willingness to let a patient class action proceed — signals that regulators and courts are scrutinizing these arrangements more closely than in the past.
Anthem’s Controversial Policy and the Industry Backlash
In January 2026, Anthem Blue Cross Blue Shield implemented a policy reducing facility payments by 10% if any services at a facility are rendered by out-of-network providers. The policy affected 11 states and was designed to pressure hospitals into ensuring all providers — including anesthesiologists — are in-network.
More than 90 specialty physician and state medical associations, including the American Society of Anesthesiologists, demanded Anthem withdraw the policy, calling it “a blatant attempt to subvert the federal No Surprises Act.” The criticism centers on the fact that hospitals often cannot control which specialists are in-network. Penalizing a hospital because an anesthesiologist group refuses to join a particular insurer’s network punishes the wrong party. For patients, Anthem’s policy could lead to reduced access if hospitals respond by limiting which insurers they accept or by cutting services in states where the 10% penalty makes certain procedures financially unviable.
Where the Fight Over Anesthesiology Billing Goes From Here
The legal and regulatory landscape around out-of-network anesthesiology billing is still evolving. The GAO’s February 2026 report showing improved in-network rates after the No Surprises Act is encouraging, but the ongoing battles over the IDR arbitration process suggest the law’s implementation is far from settled. Courts will continue to shape how the No Surprises Act is applied, and the outcome of the USAP patient class action could set precedent for how consolidation-driven price inflation is treated in healthcare antitrust law.
For patients, the practical takeaway is that protections exist today that did not exist before 2022, but they require awareness and assertiveness to enforce. Providers who violate the No Surprises Act’s balance billing ban can face penalties, but only if patients recognize the violation and report it. As the legal battles between insurers, providers, and regulators continue to play out, the most effective protection for any individual patient remains understanding their rights and knowing when a bill crosses the line from legitimate cost-sharing to prohibited surprise billing.
Frequently Asked Questions
Can an anesthesiologist bill me separately from the hospital?
Yes. Anesthesiologists typically bill independently from the facility. However, under the No Surprises Act, if you received services at an in-network facility after January 1, 2022, the out-of-network anesthesiologist cannot balance-bill you beyond your in-network cost-sharing amount.
What should I do if I receive a surprise anesthesiology bill?
First, check whether the No Surprises Act applies — it covers emergency care and non-emergency services at in-network facilities. If the bill violates the law, contact the provider in writing to dispute it and file a complaint with the federal No Surprises Help Desk at 1-800-985-3059 or your state insurance department.
Does the No Surprises Act apply to bills from before January 2022?
No. The federal No Surprises Act took effect on January 1, 2022, and does not apply retroactively. However, some states had their own surprise billing laws in place before the federal law. Check your state’s specific protections for services received before 2022.
What is the USAP class action lawsuit about?
The patient class action against U.S. Anesthesia Partners alleges that USAP consolidated nearly every large anesthesia practice in Texas and raised prices upon acquisition, artificially inflating anesthesiology costs statewide. In December 2025, a federal judge denied USAP’s motion to dismiss, allowing the case to proceed.
Can a provider send my surprise bill to collections while I am disputing it?
Under the No Surprises Act, providers are not supposed to send protected bills to collections during a pending dispute. If this happens, document it and file a complaint. It is also advisable to request written confirmation from the provider that the bill is on hold.
Does the No Surprises Act apply if I chose an out-of-network hospital for a scheduled procedure?
The protections are strongest for emergency care and for out-of-network providers at in-network facilities. If you voluntarily chose an out-of-network facility for a non-emergency procedure, the balance billing protections may not apply to the anesthesiologist or other providers at that facility.