2025 Elite LawyerWhen you see a doctor, a surgeon, or a hospital, you expect careful, competent treatment. When that treatment falls below the standard Illinois law requires, and the failure causes real harm, the law may allow you to hold the provider accountable.
Orland Park medical malpractice lawyer Michael J. Brennan represents patients and families across Orland Park and the South Suburbs in claims involving misdiagnosis, surgical errors, medication mistakes, birth injuries, and other forms of medical negligence. You speak directly with Michael about what happened. He brings more than 40 years of personal injury litigation experience to reviewing the evidence and explaining the process.
Medical malpractice cases involve strict Illinois filing requirements and short deadlines. If you believe a medical error caused you or a loved one serious harm, understanding what the law requires is the first step.
Key Takeaways
- Not every bad outcome is malpractice: Illinois law requires proof of the applicable standard of care, a departure from it, and injury caused by that departure.
- A written medical report is required before filing: Illinois law (735 ILCS 5/2-622) requires an attorney affidavit and a qualified health professional’s report confirming a reasonable and meritorious basis for the claim.
- Two deadlines apply, not one: a 2-year discovery-rule clock and a separate 4-year outer limit, with a distinct rule for minors.
- Michael J. Brennan personally handles every accepted matter on a contingency fee—no upfront cost.
Orland Park Medical Malpractice Attorney
At a Glance
- Representation for patients and families harmed by medical negligence
- Serving Orland Park, Tinley Park, Homer Glen, Mokena, and nearby South Suburban communities
- Former Assistant State’s Attorney in Cook County
- More than 40 years of personal injury litigation experience
- Contingency fee—no upfront cost
- Michael personally evaluates and handles every accepted matter
Michael reviews medical records, treatment timelines, and the available evidence to determine whether a provider’s care fell below the standard Illinois law requires and whether that failure caused the patient’s harm. He then explains what the evidence shows, what further review is needed, and the decisions ahead. You have a direct conversation with the attorney responsible for that work.
What Counts as Medical Malpractice Under Illinois Law?
A poor medical outcome, on its own, does not establish malpractice. Some complications occur even when a provider meets the accepted standard of care. Illinois law requires a patient to establish a legal claim built on four elements: a duty owed by the provider, the standard of care that applied, a failure to meet that standard, and an injury proximately caused by that failure.
Common categories of medical malpractice claims include:
- Misdiagnosis or delayed diagnosis: Failing to identify a condition that a reasonably careful provider would have caught in time to treat it effectively.
- Surgical errors: Operating on the wrong site, leaving a foreign object in the body, or departing from accepted surgical technique.
- Anesthesia errors: Improper dosing, inadequate monitoring, or a failure to account for a patient’s medical history.
- Medication errors: Prescribing or administering the wrong drug, wrong dose, or a dangerous combination.
- Birth injuries: A failure to respond to fetal distress or a delivery complication in a way that meets the accepted standard of care.
- Hospital and nursing negligence: Failing to monitor a patient, respond to a change in condition, or follow a physician’s orders.
Each of these categories requires its own review of the medical records, the applicable standard of care, and how the treatment actually unfolded. For example, a delayed cancer diagnosis case turns on what a reasonably careful physician would have ordered or referred given the same symptoms and history—not simply on the fact that the cancer was eventually found.
Medical error is a recognized patient-safety concern nationally, not just an occasional headline. A widely cited 2016 analysis by Johns Hopkins researchers, published in The BMJ, estimated that medical errors may contribute to a substantial number of U.S. deaths each year. That estimate reflects the study authors’ own extrapolation, not an official government cause-of-death classification, but it underscores why careful review of what happened matters.
What Must Be Proven in an Illinois Medical Malpractice Case?
Illinois courts require a plaintiff to establish the applicable standard of care, a negligent failure to meet it, and an injury proximately caused by that failure. Except where the negligence is so obvious a layperson could recognize it without medical training, Illinois law requires expert testimony to establish the standard of care and the provider’s departure from it.
That expert generally must be a licensed practitioner in the same school of medicine as the defendant and familiar with the standard of care in the same or a similar community, requirements the Illinois Supreme Court set out in Purtill v. Hess, 111 Ill. 2d 229 (1986). This is why Michael consults independent, qualified medical reviewers early in a case rather than relying on the medical records alone.
A Bad Outcome Is Not Automatically a Claim
Some medical complications happen even with careful treatment. The legal question is whether the provider’s care fell below the accepted standard—not simply whether the result was disappointing or unexpected.
What Is the Affidavit of Merit Requirement in Illinois?
Illinois law imposes a filing requirement unique to medical malpractice cases. Under 735 ILCS 5/2-622, the plaintiff’s attorney must file an affidavit certifying that a qualified health professional reviewed the case and found a reasonable and meritorious basis for the claim, along with that reviewer’s written report. A separate certificate and report is generally required for each defendant named in the case.
Two narrow exceptions allow the certificate to follow the complaint by up to 90 days: when the statute of limitations is close to expiring and the required consultation cannot be completed in time, or when requested medical records are not produced within 60 days of the request. Outside those exceptions, failure to file the required certificate is grounds for dismissal under 735 ILCS 5/2-619.
The Affidavit of Merit Is Not a Formality
A medical malpractice case generally cannot proceed without this certificate and a supporting medical report. Missing this requirement can result in dismissal, which is why the underlying medical review should begin as early as possible.
Unsure which medical records to gather or how a claim is reviewed? Talk directly with Michael in a free case evaluation.
How Long Do You Have to File a Medical Malpractice Claim in Illinois?
Illinois applies two separate deadlines to most medical malpractice claims under 735 ILCS 5/13-212(a): a discovery-rule period and a statute of repose. These are independent limits, and whichever expires first generally controls.
| Rule | Time Limit | How It Runs |
|---|---|---|
| Discovery rule (most adults) | 2 years | From when the patient knew, or reasonably should have known, of the injury and its connection to negligent care |
| Statute of repose (outer limit) | 4 years | From the date of the negligent act or omission, regardless of discovery, absent fraudulent concealment |
| Minors | 8 years, never past age 22 | From the date of the act or omission, but never after the minor’s 22nd birthday |
Because the 2-year discovery clock can expire well before the 4-year outer limit, and because determining exactly when a patient “should have known” of negligent care is often disputed, an early evaluation matters. Medical records, imaging, and provider communications can also become harder to obtain the longer a claim waits.
What Is Informed Consent, and How Is It Different?
A separate type of medical malpractice claim involves informed consent—a provider’s failure to disclose the risks, alternatives, and likely outcomes a patient needed to make a knowing decision about treatment. Illinois measures what a physician should have disclosed against what a reasonably careful medical practitioner in the same or similar circumstances would have disclosed.
Informed consent claims work differently from a standard negligence claim in one important respect. In Coryell v. Smith, 274 Ill. App. 3d 543 (1995), an Illinois appellate court held that this specific causation question—whether a reasonably prudent person in the patient’s position would have declined the treatment if properly informed—does not require expert testimony the way an ordinary standard-of-care claim does. The disclosure standard itself, however, generally still requires expert evidence about what a reasonable provider would have disclosed.
Common Types of Medical Malpractice Cases Michael Handles
Diagnostic Errors
Misdiagnosis, delayed diagnosis, or a failure to order the tests a reasonably careful provider would have ordered.
Surgical Errors
Wrong-site surgery, retained surgical instruments, or a significant departure from accepted surgical technique.
Anesthesia Errors
Improper dosing, inadequate monitoring, or a failure to account for a patient’s documented medical history.
Medication Errors
Incorrect prescriptions, dosing mistakes, or dangerous drug interactions that a careful review should have caught.
Birth Injuries
A failure to respond appropriately to fetal distress or a delivery complication under the accepted standard of care.
Hospital and Nursing Negligence
Failing to monitor a patient’s condition, respond to a documented change, or follow a physician’s orders.
What Compensation May Be Available?
A successful Illinois medical malpractice claim may pursue compensation for documented losses connected to the negligent care, including past and future medical expenses, lost income and reduced earning capacity, and pain, suffering, disability, or disfigurement supported by the evidence and applicable Illinois law. The official Illinois Pattern Civil Jury Instructions include damage instructions addressing these categories when supported by the evidence and law. No generic calculator can determine a particular case’s value.
Illinois currently has no statutory cap on non-economic damages, such as pain and suffering, in medical malpractice cases. The Illinois Supreme Court struck down the legislature’s most recent attempt to impose one in Lebron v. Gottlieb Memorial Hospital, 237 Ill. 2d 217 (2010), finding the cap unconstitutional—the third time the court has struck down a damages cap of this kind.
Michael’s past results include a $750,000 medical malpractice settlement. Each case depends on its own facts and medical evidence.
Have questions about the financial effects of a suspected medical error? Discuss your concerns and the available information with Michael.
Why Choose Michael J. Brennan, Esq.?
Medical malpractice cases are among the most demanding in personal injury law. Hospitals, physicians, and their insurers defend these claims aggressively, and proving negligence requires a working understanding of both the medicine and the law involved.
Michael personally handles every accepted matter, from the initial evaluation through resolution. He consults qualified medical reviewers, prepares the required certificate of merit, and explains what the evidence shows at each step. You communicate directly with him and can ask questions as the case develops. His background as a former Assistant State’s Attorney in Cook County informs how he evaluates evidence, questions witnesses, and prepares a case. Learn more on Michael J. Brennan’s attorney profile or review the full range of matters on the practice areas page, including car accident claims and other personal injury matters Michael handles.
Orland Park, IL Medical Malpractice FAQs
How do I know if I have a medical malpractice case?
Not every medical mistake qualifies. Illinois law requires proof that the provider’s care fell below the accepted standard and that this failure caused your injury. A medical and legal review can help determine whether both elements are present.
What is the affidavit of merit, and why does it matter?
Illinois law (735 ILCS 5/2-622) requires an attorney affidavit and a qualified health professional’s written report confirming a reasonable and meritorious basis for the claim before most cases can proceed. Failure to file it is grounds for dismissal.
How long do I have to file a medical malpractice claim in Illinois?
Generally 2 years from when you knew, or reasonably should have known, of the injury and its connection to negligent care, but never more than 4 years after the negligent act, absent fraudulent concealment. A different rule applies to minors.
Is there a different deadline for a child’s medical malpractice claim?
Generally yes. A minor’s claim may be filed up to 8 years after the act or omission, but never after the minor’s 22nd birthday.
Will I need a medical expert to support my claim?
In most cases, yes. Illinois law requires a written report from a qualified health professional before filing, and expert testimony is generally required to establish the standard of care unless the negligence is obvious to a layperson.
Is there a cap on how much I can recover in an Illinois medical malpractice case?
No. Illinois does not currently cap non-economic damages, such as pain and suffering, in medical malpractice cases. The Illinois Supreme Court struck down the state’s most recent attempt to impose such a cap.
What does it cost to hire Michael J. Brennan?
Michael handles medical malpractice matters on a contingency fee—no upfront cost. He explains the written fee agreement during the free case evaluation.
Get a Free Case Evaluation
If you believe medical negligence caused you or a loved one serious harm, start with a direct conversation with Michael J. Brennan. He will listen to your concerns, explain the records he needs, and discuss the review process with you. The case evaluation is free, and he personally handles every matter he accepts.
Speak Directly With Michael J. Brennan
Call (708) 460-9300 or use the contact form to schedule a free case evaluation. Contingency fee—no upfront cost.
