$15 MILLION Awarded For Our Client: 13-year-old suffered permanent brain injury in rollover crash. Multiple defendants.

Expert Guidance and Advocacy for Life’s Legal Challenges

Medical Malpractice Attorneys Serving Illinois and Beyond

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Trusted Medical Malpractice Representation for Injured Patients

When medical care causes serious harm, you need more than a general explanation of the law. You need an experienced legal team that can review what happened, explain whether negligence may have occurred, and pursue accountability with the care and urgency your situation deserves.

The Law Offices of Frederick W. Nessler & Associates, Ltd./PLLC has represented injured individuals for nearly 50 years, with medical malpractice in Illinois as a key focus of our firm. Our attorneys bring decades of civil trial experience to these complex cases, working to secure fair settlements and verdicts for clients harmed by preventable medical errors.

We take medical malpractice cases on a contingency fee basis, which means you pay no legal fees unless your case resolves in your favor. From the first review through each stage of the claim, our team is committed to straightforward guidance, ethical representation, and a justice-focused approach for every client we serve. 

Medical-Malpractice

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What Counts as Medical Malpractice Under Illinois Law

Medical malpractice requires four elements: 

  1. The medical provider owed the patient a duty of care.

  2. That duty was breached by failing to meet the accepted standard of care.

  3. The breach directly caused harm.

  4. Actual damages resulted.

Not every bad outcome from medical treatment constitutes legal negligence. Medical treatment carries inherent risks, and outcomes don't always go as hoped, even when providers act appropriately. The law addresses conduct that falls outside what a reasonably competent provider would do under similar circumstances.

Illinois has specific procedural requirements for medical malpractice claims, including the need for a qualified medical professional to review the case before it proceeds. Because standards vary by state, cases involving care in Florida, Texas, Colorado, Missouri, or Kentucky are governed by those jurisdictions' rules. Our attorneys are familiar with that landscape.

Types of Medical Errors We Handle

Medical negligence can take many forms. The following categories outline the primary types of cases we represent.

  • Surgical and Anesthesia Errors: Wrong-site surgery, unintended damage to surrounding tissue, and errors in anesthesia administration can cause serious and lasting harm. Our surgical error attorneys work to establish where standard care fell short.

  • Diagnostic Errors: A missed, delayed, or wrong diagnosis can allow a condition to progress when earlier intervention would have made a difference. These cases often depend on what the provider knew and what a competent clinician should have done with that information.

  • Birth Injuries and Labor and Delivery Negligence: Injuries during labor, delivery, or immediately following can affect a child for life. Our birth injury attorneys represent families in cases involving harm to the infant, including oxygen deprivation, delayed intervention, and improper use of delivery instruments. For cases involving harm to the patient giving birth, our labor and delivery negligence attorneys review hospital conduct, provider decisions, and failures in care during childbirth. 

  • Emergency Room Errors: The pace of an emergency department creates conditions that lead to errors. Misread imaging, failure to recognize a cardiac event, and premature discharge are situations our ER malpractice attorneys evaluate.

  • Medication and Pharmacy Errors: Prescribing the wrong medication, dispensing an incorrect dose, or failing to flag dangerous drug interactions can cause serious injury. Our pharmacy negligence attorneys take cases where errors in the medication chain caused preventable harm.

  • Unnecessary Treatment or Procedures: When a provider recommends or performs a procedure that was not medically warranted, the resulting harm may form the basis of a claim.

  • Monitoring Failures and Failure to Treat: Providers are responsible for tracking a patient's condition over time. Failures to monitor adequately, act on changes in status, or order appropriate follow-up care can be just as damaging as an active error.

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What Causes Medical Errors

Medical errors often involve a combination of individual and systemic factors. At the provider level, failures can include inadequate review of a patient's medical history, fatigue affecting judgment, and failure to order diagnostic tests. At the institutional level, understaffing creates conditions in which individual providers take on more patients than they can safely manage, and communication breakdowns allow critical information to fall through the cracks.

Research shows medical errors affect a significant number of hospitalized patients. These incidents aren't limited to poorly managed facilities, either; they can occur even in highly respected hospitals and involve experienced professionals.

Damages That May Be Available in a Malpractice Case

When a medical malpractice claim is successful, the compensation may cover two main types of losses:

  • Financial Costs: This includes medical bills, future care, lost income, and the loss of future earning ability.

  • Personal Impact: Such as physical pain, emotional distress, loss of enjoyment of life, and loss of consortium.

If medical negligence led to a patient’s death, surviving family members may be able to bring a wrongful death claim under Illinois law. These claims may seek compensation for losses such as financial support, companionship, and the overall impact of losing a loved one. The damages available depend on the circumstances of the case.

You can review our case results to see the matters we've represented, and our attorney profiles provide background on the legal team involved.

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Related Practice Areas

Medical malpractice cases sometimes connect to other serious legal matters, depending on where the harm occurred.

  • Nursing home negligence cases often involve the same failure-to-monitor patterns that define medical malpractice in institutional settings.

  • Catastrophic injury cases may arise directly from surgical or diagnostic errors that cause permanent harm.

  • Cerebral palsy claims frequently trace back to birth injuries caused by oxygen deprivation or delivery errors.

  • Head injury matters can stem from failures in emergency care or post-operative monitoring.

Serving Clients Across Illinois, Florida, Texas, and More

Illinois is the heart of our medical malpractice practice, but we serve clients throughout the country with offices in Largo, Florida, and Fort Worth, Texas. We also serve clients in Colorado, Missouri, and Kentucky. For a complete list of office locations, visit our locations page.

Common Questions About Medical Malpractice Cases

The legal standard asks whether a provider's conduct fell below what a reasonably competent professional would have done under similar circumstances, and whether that failure directly caused harm. An attorney can review your situation and give a more informed assessment.

We take medical malpractice cases on a contingency fee basis. You don't pay attorney fees unless your case resolves in your favor.

Timelines vary considerably depending on the complexity of the medical issues, the number of expert witnesses required, and whether the case resolves through negotiation or trial. Some cases settle within months; others take several years.

Yes. Illinois law provides a path for surviving family members to pursue a wrongful death claim when a patient dies as a result of medical negligence. The damages available in those cases differ from a standard malpractice claim and may include compensation for loss of financial support and companionship.

We do. While our medical malpractice practice is most concentrated in Illinois, our firm also represents clients in Florida, Texas, Colorado, Missouri, and Kentucky. Our office footprint in those states reflects a genuine presence, and we work with clients in those states the same way we do in Illinois.

Talk to a Medical Malpractice Attorney in Illinois

If you're trying to figure out whether what happened during medical care was a preventable error, you deserve a straight conversation. We're here to review the facts of your situation and give you an honest answer about whether you have a viable claim. There are no fees unless your case resolves in your favor. To speak with a medical malpractice attorney, call us or submit a request through our online contact form.

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Our Locations

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20 South Clark St, Suite 1800
Chicago, IL 60603
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M-F 8am – 5:00pm

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Denver, CO 80202
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Tampa, FL 33607
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Fort Worth, TX 76164
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536 N. Bruns Lane
Springfield, IL 62702
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M-F 8am – 5pm

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With over 40 years of experience fighting for the injured, The Law Offices of Frederick W. Nessler & Associates, Ltd./PLLC is ready to hear your story and fight for the compensation you deserve.