Apparent Agency in Medical Malpractice: When Hospitals Share Liability
Cases involving apparent agency in medical malpractice seek to make an Illinois hospital answer for the negligence of a doctor it never employed. Many physicians who treat patients inside a hospital are retained as independent contractors rather than hired as employees, a distinction patients rarely see when they arrive. Hon. Russell W. Hartigan (ret.), a member of the ISBA Mutual Insurance Company Board of Directors, examined the issue in the July 2026 Illinois Bar Journal after a client in the medical field asked how the law separates the two.
Under Illinois law, a hospital may be held liable in a medical malpractice case on two distinct theories.
The first rests on a principal-agent relationship, where apparent agency applies.
The second rests on the hospital's own duty to review and supervise the care a patient receives.
Courts treat whether an agency relationship exists as a question of fact. For Illinois lawyers on either side, details such as consent forms, branded clothing, office locations, and timing often decide the outcome.
How Illinois Courts Apply Apparent Agency in Medical Malpractice
In the original article, "Cloak and Scalpel," Hartigan identifies two Illinois Supreme Court decisions as the leading cases. Gilbert v. Sycamore Municipal Hospital (1993), Dr. Irving Frank treated Jack Gilbert while covering for another physician, even though Gilbert had requested a different doctor. After Gilbert died, the hospital denied vicarious liability because Dr. Frank was not its employee. The hospital had never told patients that its emergency room physicians were independent contractors, and the court reversed summary judgment in its favor.
The first element, "holding out," is satisfied when a hospital presents itself as a provider of emergency care without disclosing the contractor arrangement. The second, "justifiable reliance," is satisfied when the patient relies on the hospital, rather than a specific physician, for complete care. Under Gilbert, an ambiguous consent form can overcome a hospital's claim that no apparent agency existed.
York v. Rush-Presbyterian-St. Luke's Medical Center (2006) was brought by Dr. James York, a retired orthopedic specialist injured while receiving anesthesia before knee-replacement surgery. His anesthesiologist, an independent contractor, wore Rush-branded scrubs and lab coats, a common practice at Rush. Evidence was presented from which a jury could conclude the anesthesiologist was "cloaked with authority" by the hospital. Law firms face a parallel risk through Illinois imputed liability.
How Hospital Consent Forms Shape Vicarious Liability
A clear, unambiguous signed consent form is an important factor in hospital vicarious liability claims. In Brown v. Mercy Hospital & Medical Center, summary judgment was affirmed for a hospital whose patient signed five identical consent forms, including one at admission. Bold type, set-apart text, and her initials beside the independent-physician acknowledgment made the forms unambiguous. That result held even though her cardiologist wore a badge bearing the hospital's name without his practice group's name.
In Delegatto v. Advocate Health & Hospitals (2021), Tracy Delegatto signed Silver Cross consent forms on three occasions, and each stated that "all physicians" were independent contractors. Choosing her surgeon because of his hospital affiliation was not evidence of apparent authority. The court also weighed form length, bold type, required initials, bullet points, and signature placement.
Timing mattered in Brayboy v. Advocate Health & Hospital Corp. (2024), where a mother was handed a three-page consent form two hours after bringing her young son to the emergency room. The form was never explained to her, and she signed it so treatment would continue. Despite the form's clear language, the First District found fact questions on holding out and reliance and reversed partial summary judgment.
A Checklist for Evaluating Independent Contractor Physician Claims
Hartigan's article includes a checklist, "Determining Apparent Agency," that may help any party in hospital cases involving independent contractor physicians. Whether a physician is an employee or an independent contractor remains a question of fact. Hartigan notes that Illinois caselaw on apparent agency "appears to be across the board," with outcomes that often turn on specific facts and on patient perception. Each question should be answered from the patient's perspective, based on what the patient could reasonably know about their care:
Does the consent form contain any ambiguity about the doctor-hospital relationship?
What did the hospital do to hold the doctor out as its agent?
What role did the hospital play in selecting the surgeon?
Does the physician maintain an office on-site at the hospital?
Is the doctor's lab coat or badge marked with the hospital's logo?
Was the employment relationship discussed between the physician and the patient?
Is the physician paid by the hospital, or are certain benefits provided by the hospital?
Has the reliance element of the apparent agency claim been satisfied?
Can you show a sympathetic judge or jury that an issue of fact exists?
Several questions track the facts of Gilbert, Brown, Delegatto, Brayboy, and York, which makes the list useful for early case evaluation.
Key Takeaways on Apparent Agency in Medical Malpractice
Gilbert and York remain the two leading Illinois Supreme Court decisions on apparent agency, and both show the exposure a hospital faces when it stays silent about contractor status. On the defense side, Delegatto is regarded as a very strong recent authority on the consent-form issue.
Gilbert explained that a principal is bound by the authority it actually gives and by the authority it appears to give. That appearance is measured by what a reasonably prudent person would suppose from the principal's conduct. Most people who seek emergency care do not know the employment status of the professionals treating them. Unless patients are put on notice, they can reasonably assume those professionals are hospital employees.
For Illinois lawyers, these cases offer a practical framework for assessing consent forms, branded attire, and timing in hospital vicarious liability claims from the first client meeting. To learn how to protect your own practice from professional liability risk, contact ISBA Mutual Insurance Company.
