Trusted Legal Representation for Healthcare Negligence in Arizona
Written by: Hastings Law Firm | Reviewed by: Tommy Hastings | Updated: May 11, 2026
What You Should Know About Healthcare Negligence Claims in Arizona:
- Serious harm can follow when medical care falls below the accepted standard of care and directly causes injury or death.
- Options can be limited when an injury is treated as a bad outcome rather than negligence, since a poor result alone is not enough for a claim.
- A separate claim can arise when treatment occurs without proper informed consent, including when key risks are not disclosed.
- Responsibility can extend beyond an individual clinician, since hospitals and other entities may share liability for employee actions and systemic failures.
- Recovery can include both financial losses and human losses, since damages may cover medical bills and lost wages as well as pain, suffering, and loss of enjoyment of life.
- Compensation can be reduced when fault is attributed to the patient, since Arizona uses a pure comparative negligence system.
- Recovery can be cut off entirely if filing deadlines are missed, since Arizona law limits the time to bring medical injury claims and some situations have shorter timelines.
- A claim can be blocked early without a supporting expert affidavit, since Arizona requires a preliminary affidavit of merit before a lawsuit can proceed.
- Disputes often focus on causation and measurable damages, since missing any required element can lead to dismissal.
- Documentation can be central to the outcome, since medical records and expense records are closely scrutinized when damages are evaluated.
A Medical Injury Focused Law Firm
When a doctor, surgeon, or hospital causes harm through negligence, the aftermath can feel isolating. You may be dealing with unexpected medical bills, worsening symptoms, or the loss of someone you love, all while wondering whether anyone will believe what happened. That doubt is understandable, and it does not mean you are wrong.
At Hastings Law Firm, we focus exclusively on medical malpractice. Our legal team includes former defense attorneys, in-house nurse consultants, and board-certified patient advocates who know how to identify what went wrong and build a case around it. We prepare every case as though it is going to trial, because that level of preparation is what drives fair results.
If you believe you or a loved one was harmed by negligent medical care anywhere in Arizona, we can review what happened and explain your options in a free, confidential evaluation.
What Constitutes Medical Malpractice in Arizona
Medical malpractice occurs when a healthcare provider deviates from the accepted standard of care, directly causing injury or death to a patient. Not every poor result qualifies. Surgery carries inherent risk, and not all conditions respond to treatment as expected. The legal question is whether the provider’s actions fell below what a reasonably competent professional in the same specialty would have done under similar circumstances, and whether that failure caused the harm.
Under A.R.S. § 12-563, a patient must prove the provider failed to exercise the degree of care, skill, and learning expected of a reasonable, prudent healthcare provider in the same profession acting in the same or similar circumstances. A known complication after a correctly performed surgery is not malpractice. But if a surgeon operates on the wrong site, or a physician ignores diagnostic results that clearly warranted further evaluation, the harm was not an inherent risk. It was a preventable error, and that distinction is what separates a bad outcome from actionable negligence.
The Role of Informed Consent in a Medical Negligence Claim
Informed consent requires a healthcare provider to explain the material risks, expected benefits, and available alternatives of a proposed treatment before the patient agrees to undergo it. Signing a consent form acknowledges that certain complications can occur even when care is delivered properly, but it does not authorize a provider to perform negligently.
If an infection resulted from unsterilized instruments or a breakdown in surgical protocols, the provider is not shielded simply because “infection” was listed as a possible risk. The consent process covers known risks of competent care, not the consequences of substandard care.
A separate claim can also arise when a provider fails to disclose a material risk altogether. If the patient was not told about a significant risk, suffered harm from that undisclosed risk, and would have chosen differently had they been informed, the failure in the consent process itself can support a claim independent of whether the procedure was performed correctly.
How Our Arizona Medical Lawyers Prove Negligence
Every medical malpractice case in Arizona requires proof of four elements: a duty of care owed to the patient, a breach of that duty, a direct causal connection between the breach and the injury, and measurable damages. Each element must be supported by evidence, and the failure to prove any one of them can result in the case being dismissed. The burden of proof rests on the injured party to demonstrate these facts by a preponderance of the evidence.
The Four Elements of Liability
Duty of care. A doctor-patient relationship must have existed, creating a legal obligation to provide competent treatment. This duty is established the moment a provider begins treating or evaluating a patient, whether in a hospital, clinic, emergency room, or private practice.
Breach of duty. The provider’s actions or omissions must have fallen below the accepted standard of care. This often involves reviewing whether proper procedures were followed, such as conducting a differential diagnosis (a systematic process of comparing possible conditions to identify the correct one) or performing medication reconciliation (verifying a patient’s full medication list to prevent harmful interactions). Expert testimony is required to define the standard and demonstrate the deviation.
Causation. The breach must be directly linked to the patient’s injury. This is typically the most contested element. Defense teams regularly argue that the harm resulted from the patient’s underlying condition rather than the provider’s error. Establishing causation requires detailed medical analysis and expert testimony connecting the specific breach to the specific harm.
Damages. The patient must have suffered real, measurable losses. Medical bills, lost income, future care costs, physical pain, emotional suffering, and diminished quality of life all fall under this element. Without proof of actual harm, there is no claim.
Our medical-legal team, including in-house nurses and a national network of specialists, examines records, timelines, and clinical protocols to determine whether each element can be supported and where liability lies.
The Preliminary Affidavit of Merit Requirement
Arizona law adds an extra procedural step before a medical malpractice lawsuit can proceed. Under A.R.S. § 12-2603, the party filing a claim must provide a preliminary expert opinion, known as an Affidavit of Merit, confirming that a qualified medical professional has reviewed the case and believes the standard of care was violated.
This requirement exists to screen out claims that lack a medical basis, and it means your legal team needs access to credible experts from the very beginning. The affidavit must come from a provider qualified in the same specialty as the defendant, and it must address the standard of care, the breach, and causation.
If the affidavit is insufficient or not provided in the required form, the case can be dismissed before it reaches discovery. We coordinate expert involvement early in every case to ensure this procedural requirement is met and the claim is protected from technical dismissal.
Who Can Be Held Liable for Medical Negligence in Arizona
Liability in a medical malpractice case can extend well beyond the physician who provided direct care. Depending on where and how the negligence occurred, hospitals, nursing staff, anesthesiologists, pharmacists, and medical device manufacturers may all share responsibility. Identifying every responsible party is a critical part of building a complete claim.
Vicarious Liability and Hospital Responsibility
Hospitals can be held liable for the actions of their employees, including nurses, technicians, and employed physicians, under the legal doctrine of vicarious liability. If a staff member causes patient harm while carrying out their duties, the employing institution may share in the legal liability.
However, many physicians working in Arizona hospitals are independent contractors rather than employees. Defense teams frequently use this distinction to argue that the hospital bears no responsibility for the doctor’s conduct. Arizona law allows claims against the facility itself when institutional failures contributed to the harm, regardless of the physician’s employment status. Our investigation determines the true employment relationship and whether the hospital’s own systems played a role in the injury.
Corporate Negligence and Institutional Failures
A hospital may also face direct liability for its own systemic failures, separate from the conduct of any individual provider. Inadequate staffing, failure to properly credential physicians, unsafe protocols, breakdowns in medication reconciliation, and failures in communication between care teams can all create conditions for patient harm.
According to a report by the [National Academies of Sciences, Engineering, and Medicine](https://www.nationalacademies.org/read/13269/chapter/3), systemic failures within healthcare institutions contribute significantly to preventable patient harm. These institutional negligence claims target the organizational decisions that allowed the error to occur. When a hospital’s own policies were not followed, or when those policies failed to meet acceptable safety standards, the facility itself can be held accountable.
Pharmaceutical and Medical Device Liability
If a patient is harmed by a defective drug, a compounding error, contaminated medication, or a faulty medical device or implant, the manufacturer, distributor, or pharmacy may be liable under medical product liability principles. These claims can exist alongside a medical malpractice claim or independently. We evaluate every potential source of liability to ensure that all responsible parties are identified.
“Cases aren’t won by the lawyer with the fanciest tie, but by the lawyer who works the hardest and cares the most.”
– Tommy Hastings, founding attorneyAn Arizona Medical Law Firm That Gets Results
Hastings Law Firm was founded in 2005 by Tommy Hastings, a board certified personal injury attorney who has dedicated his entire career to representing patients and families harmed by medical negligence. Medical malpractice is all we do. We don’t split our attention across car accidents, slip-and-falls, or general personal injury. That exclusive focus shapes how we staff cases, how we prepare for trial, and the depth of medical knowledge we bring to every claim.
The preparation and intensity we bring to every case has earned us a reputation that defense attorneys and insurance carriers recognize. Medical malpractice is all we do, and that matters when you’re going up against hospitals, insurance carriers, and defense teams with unlimited resources.
Experienced & Dedicated Medical Injury Lawyers Near You
Patients and families across Arizona trust Hastings Law Firm because we combine deep medical knowledge with aggressive litigation strategy. Tommy has obtained millions of dollars in compensation for his clients, and the attorneys and medical professionals on our team bring that same standard to every case we take on.
Recoverable Damages in Arizona Healthcare Negligence Lawsuits
Patients harmed by medical negligence can recover economic damages for measurable financial losses and non-economic damages for the personal toll of the injury. The full scope of compensation depends on how the injury has affected your daily life, your ability to work, and your need for future medical care.
Economic damages cover past and future medical expenses, lost wages, diminished earning capacity, rehabilitation costs, home modifications, and any other out-of-pocket costs directly caused by the injury. Detailed documentation is essential, as the defense will scrutinize every expense to minimize their financial exposure. For cases involving permanent disability or the need for lifelong care, we work with economists and life-care planners to project future costs accurately.
Non-economic damages address the human toll. Physical pain, emotional distress, mental anguish, loss of enjoyment of life, disfigurement, and the impact on family relationships are real losses, even though they do not come with a receipt. An Arizona medical malpractice lawyer experienced in these claims knows how to present this evidence in a way that resonates with a jury.
The Arizona Constitution, Article 2, § 31, provides a significant protection for injured patients. It prohibits the legislature from placing caps on personal injury damages. Unlike many other states, Arizona allows juries to award the full amount they believe is fair, without arbitrary limits on any category of recovery.
In wrongful death cases, surviving family members may recover both economic and non-economic damages. The two-year statute of limitations for wrongful death typically runs from the date of death rather than the date of the original negligent act.
Pure Comparative Negligence
Arizona follows a pure comparative negligence system, which adjusts the final compensation based on each party’s share of responsibility for the injury. Under this rule, a patient can still recover damages even if they were partially at fault.
If a jury finds that the patient bears 20% of the responsibility and awards $1 million in total damages, the patient would receive $800,000. Unlike some states that bar recovery once the patient’s fault exceeds a certain threshold, Arizona allows recovery at any percentage.
Defense teams frequently use this rule to shift blame toward the patient. Common arguments include claims of non-compliance with treatment plans, failure to attend follow-up appointments, or delay in seeking care. These arguments are often raised to reduce the award even when the provider’s negligence was the primary cause of the harm. We prepare for these arguments from the start by documenting the patient’s actions alongside the provider’s obligations, building a factual record that counters attempts to deflect accountability.
Arizona Statute of Limitations for Malpractice Claims
Arizona law generally requires medical malpractice lawsuits to be filed within two years from the date the injury occurred or was discovered. If that deadline passes, the right to file a claim is almost always lost, regardless of how strong the evidence may be.
The standard rule comes from A.R.S. § 12-542, which sets a two-year statute of limitations for personal injury actions, including those based on medical negligence. But the clock does not always start on the date of the procedure or treatment.
The Discovery Rule and Exceptions for Minors
The discovery rule can extend the filing deadline when an injury was not immediately apparent. Under this exception, the two-year clock may begin on the date the patient knew, or reasonably should have known, that the injury was caused by negligent care. This applies most often in cases involving misdiagnosis, retained surgical instruments, or conditions that develop gradually after treatment.
For children injured by medical malpractice, the statute of limitations is typically tolled (paused) until the child reaches the age of 18, giving them until age 20 to file. However, families often choose to file sooner to ensure evidence is preserved and witness memories remain fresh.
Claims Against Government Entities
Claims against government-operated hospitals and healthcare facilities in Arizona, including county medical centers and some VA-affiliated facilities, are subject to a much shorter timeline. Arizona law requires a Notice of Claim to be filed within 180 days of the injury. This is not a lawsuit; it is a mandatory preliminary step that must be completed before a lawsuit can be filed. Failure to submit the Notice of Claim within this window strictly bars the case, regardless of the severity of the injury.
Because this 180-day deadline is significantly shorter than the standard two-year statute of limitations, patients treated at government facilities face an especially narrow window. If you received care at a county hospital or government-run facility, consulting an Arizona medical malpractice lawyer promptly is critical to preserving your right to pursue a claim.
Where Medical Malpractice Cases Are Filed in Arizona
Medical malpractice lawsuits in Arizona are filed in the Superior Court of the county where the negligent care occurred or where the defendant resides. Arizona has 15 counties, each with its own Superior Court, and the procedural expectations and local rules can vary from one jurisdiction to another.
Maricopa County Superior Court is the largest jurisdiction in the state and the fourth-largest trial court system in the country, serving over 4.7 million residents. Civil filings are submitted to the Clerk of Superior Court, with the civil filing counter at 201 W. Jefferson Street in downtown Phoenix. Attorneys are required to file electronically under Arizona Supreme Court Administrative Order 2021-30.
Pima County Superior Court in Tucson handles cases from the state’s second-largest metro area. Pinal County, Yavapai County (Prescott), Coconino County (Flagstaff), and Yuma County each maintain their own Superior Court with jurisdiction over malpractice claims arising from care in those regions.
Maricopa County operates a compulsory arbitration program for certain civil cases, but most medical malpractice claims exceed the jurisdictional dollar threshold and proceed directly to a judge or jury. If a case is routed to arbitration, either party may request a trial de novo if they disagree with the result.
Appeals from any Arizona Superior Court are heard by the Arizona Court of Appeals. Division One sits in Phoenix and covers Maricopa County and much of the northern and western parts of the state. Division Two sits in Tucson and covers Pima County and the southern counties.
Our attorneys file and appear in Arizona Superior Courts across the state. That familiarity with local procedural rules, scheduling expectations, and judge-specific practices affects how we prepare cases and manage timelines from the start.
Major Hospitals and Health Systems in Arizona
Arizona’s healthcare market is anchored by several large hospital systems that operate facilities across the state. Understanding where patients receive care matters because malpractice claims can arise from any part of this network, and identifying the correct institutional defendants is an early and important step in building a case.
Banner Health is the largest private employer in Arizona and one of the largest nonprofit hospital systems in the country, headquartered in Phoenix. Banner University Medical Center Phoenix is a 746-bed Level I Trauma Center and the primary teaching hospital for the University of Arizona College of Medicine in Phoenix. Banner also operates Banner University Medical Center Tucson, Banner Estrella Medical Center in west Phoenix, Banner Thunderbird Medical Center in Glendale, Banner Desert Medical Center in Mesa, Banner Gateway Medical Center in Gilbert, and Banner Ironwood Medical Center in San Tan Valley. Across these campuses, Banner provides everything from emergency trauma care to high-risk obstetrics and organ transplantation.
Dignity Health, now part of CommonSpirit Health, operates St. Joseph’s Hospital and Medical Center in central Phoenix, which houses the Barrow Neurological Institute, one of the top neuroscience programs in the world. Dignity Health also operates Chandler Regional Medical Center and Mercy Gilbert Medical Center in the southeast Valley. In Tucson, CommonSpirit operates Carondelet St. Mary’s Hospital and Carondelet St. Joseph’s Hospital.
HonorHealth runs four hospital campuses across Scottsdale and North Phoenix, including Scottsdale Osborn Medical Center, Scottsdale Shea Medical Center, Deer Valley Medical Center, and John C. Lincoln Medical Center.
Valleywise Health is Maricopa County’s public safety-net hospital and the county’s only public teaching hospital. It serves uninsured and underinsured patients across the Valley through its main medical center and a network of community health centers.
Mayo Clinic Hospital in Phoenix is a nationally ranked specialty and surgical facility. Phoenix Children’s Hospital is the state’s only hospital dedicated exclusively to pediatric care. Abrazo Health operates multiple campuses across the Valley, including Abrazo Central Campus, Abrazo Arrowhead Campus, and the Arizona Heart Hospital.
Tucson Medical Center (TMC) is the largest locally governed nonprofit hospital in southern Arizona. Northern Arizona Healthcare operates Flagstaff Medical Center and Verde Valley Medical Center, serving patients across the northern part of the state. Yuma Regional Medical Center is the primary hospital serving the Yuma area and surrounding agricultural communities near the Arizona-Mexico border.
Beyond hospitals, Arizona has seen rapid expansion of freestanding emergency rooms, ambulatory surgical centers, and urgent care clinics, particularly across the Phoenix metro. These facilities are held to the same standard of care as hospital-based ERs and physician offices. When a provider at any of these locations fails to meet that standard and a patient is harmed, the facility and its providers face the same liability exposure as a major hospital system.
Types of Arizona Medical Malpractice Litigation We Handle
Medical malpractice takes many forms, and each type of case presents distinct medical and legal challenges. Our team has the clinical knowledge and litigation experience to handle claims across the full spectrum of healthcare negligence.
Surgical errors include wrong-site surgery, retained instruments, nerve damage, and anesthesia complications. These cases require detailed reconstruction of operative protocols and often involve testimony from surgeons and anesthesiologists in the defendant’s specialty.
Birth injuries involve harm to a mother or infant during pregnancy, labor, or delivery. These claims depend heavily on electronic fetal monitoring strips, nursing notes, and expert review by maternal-fetal medicine specialists and neonatologists.
Misdiagnosis and delayed diagnosis cases arise when a failure to identify or correctly diagnose a condition causes it to worsen or become untreatable. Cancer, stroke, heart attack, and pulmonary embolism are among the most commonly involved conditions.
Hospital and systemic failures involve negligence at the institutional level, including inadequate staffing, unsafe protocols, medication errors, and communication breakdowns between care teams.
Emergency room negligence involves failures in triage, diagnostic errors, and premature discharge. Proving negligence in the ER requires showing that the standard of care was violated despite the time constraints inherent to emergency medicine.
Nursing home abuse and neglect cases target substandard care in long-term care facilities, including falls, medication errors, pressure injuries, and failures in basic patient monitoring.
Pharmaceutical injuries and medical device failures involve harm caused by dangerous drugs, compounding errors, defective implants, or device malfunctions. These claims may target manufacturers, distributors, and the providers who prescribed or implanted the product.
Wrongful death claims are brought by surviving family members when a patient dies as a result of preventable medical error.
What to Expect When Pursuing a Malpractice Case in Arizona
The process of bringing a medical malpractice case in Arizona follows a structured path, and each step builds on the one before it. Here is a general overview of how it works.
We start with a free evaluation. A patient advocate reviews your medical records and the circumstances of your case to determine whether the evidence supports a claim. If the case moves forward, our in-house medical team conducts a detailed review of the records to reconstruct the timeline of care and identify where the standard may have been breached.
Before a lawsuit can be filed, we must secure the Affidavit of Merit required under A.R.S. § 12-2603. We coordinate with qualified medical experts early to ensure this procedural step is completed and the claim is protected from technical dismissal.
Once the complaint is filed, the case enters discovery. Both sides exchange evidence, request documents, and depose witnesses, including treating physicians, nursing staff, and retained experts. This phase builds the factual foundation of the case and often reveals information that was not available during the initial investigation.
Many malpractice cases in Arizona resolve through settlement negotiation or mediation before reaching trial. But settlement offers are only meaningful when the defense knows the plaintiff’s team is prepared to try the case. We build every case with that standard in mind, so that whether the resolution comes at the negotiation table or in a courtroom, our clients are in the strongest possible position.
For cases involving government entities, the timeline is compressed. The 180-day Notice of Claim requirement means the pre-suit investigation must begin immediately, and our team is structured to move quickly when that deadline applies.
Arizona Communities Our Law Firm Serves
We represent patients and families harmed by medical negligence across the state of Arizona from our Phoenix office.
In the Phoenix metro, we serve clients in Phoenix, Scottsdale, Tempe, Mesa, Chandler, Gilbert, Glendale, Peoria, Surprise, Goodyear, Avondale, Buckeye, Cave Creek, Fountain Hills, Paradise Valley, Queen Creek, San Tan Valley, and the surrounding communities.
In southern Arizona, we represent patients and families in Tucson, Oro Valley, Marana, Sierra Vista, Green Valley, and the surrounding areas.
Across the rest of the state, we serve clients in Flagstaff, Prescott, Sedona, Yuma, Lake Havasu City, Kingman, Casa Grande, and their surrounding communities. Cases arising outside Maricopa County are filed in the Superior Court of the county where the care occurred. The underlying
Why Hastings Law Firm for Your Arizona Medical Malpractice Claim
Medical malpractice cases are among the most complex in civil litigation. They demand a team that understands both the law and the medicine behind every claim, and that has the resources to go up against hospitals, insurance carriers, and well-funded defense teams. Hastings Law Firm was built specifically for this work.
Medical malpractice is all we do. We don’t split our attention across car accidents, slip-and-falls, or general personal injury. That exclusive focus shapes how we staff cases, how we prepare for trial, and the depth of medical knowledge we bring to every claim. Our founder, Tommy Hastings, is a board certified personal injury attorney and a 2025 inductee into the American Board of Trial Advocates (ABOTA), an invitation-only organization recognizing experienced trial lawyers.
Our legal team includes former defense attorneys who previously represented hospitals and healthcare systems, giving us a clear understanding of how the other side builds its case. Our staff also includes experienced nurses and Board Certified Patient Advocates who review medical records, identify charting inconsistencies, and interpret clinical data that might otherwise go unnoticed. That collaboration between legal and medical professionals gives our clients a strategic advantage at every stage.
We prepare every case from day one as if it will go before a jury, and we operate on a contingency fee basis. You pay no attorney fees or costs unless we recover compensation for you.
Talk to an Arizona Medical Malpractice Lawyer About Your Case
If you or a loved one has been harmed by medical negligence anywhere in Arizona, we are here to help you understand what happened and whether you have a case. Your first conversation with us is free, confidential, and comes with no obligation. We will review the details of your situation, answer your questions, and give you an honest assessment of your legal options. If we take your case, you pay no attorney fees or costs unless we recover compensation on your behalf. Call or use the contact form on this page to schedule your free case review.
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Questions About Arizona Medical Injury Lawsuits
Key Medical Malpractice Terms:
- Standard of care
- The benchmark of skill, judgment, and treatment that a reasonably competent healthcare provider in the same specialty would deliver under comparable circumstances. Under A.R.S. § 12-563, the patient must demonstrate that the provider failed to exercise the degree of care, skill, and learning expected of a reasonable, prudent provider in the same profession acting in the same or similar circumstances, and that the shortfall directly caused the injury.
- White Coat Effect
- A psychological phenomenon where patients feel intimidated by doctors or other medical professionals and are reluctant to question their decisions, ask for clarification, or advocate for themselves. In medical malpractice cases, this effect can prevent patients from recognizing warning signs of negligence or seeking a second opinion when something feels wrong.
- Informed consent
- The legal obligation of a healthcare provider to explain the material risks, expected benefits, and available alternatives of a proposed treatment or procedure before the patient agrees to undergo it. Signing a consent form does not protect a provider from liability for negligence. Informed consent covers known risks of competent care, not the consequences of substandard care or preventable errors. A separate claim can arise when a provider fails to disclose a material risk and the patient suffers harm from that undisclosed risk.
- Differential diagnosis
- The systematic clinical process of evaluating a patient’s symptoms and test results to distinguish between possible conditions and arrive at the correct diagnosis. In a malpractice claim, expert testimony may focus on whether the provider conducted an adequate differential diagnosis or failed to consider conditions that the available evidence should have prompted them to evaluate.
- Medication reconciliation
- The process of creating and maintaining an accurate list of all medications a patient is taking and comparing that list at every transition of care, such as hospital admission, transfer, or discharge. Failures in medication reconciliation can lead to dangerous drug interactions, duplicate therapies, or incorrect dosages, and may establish liability when the resulting harm was preventable.
- Sentinel event
- An unexpected event during medical care that results in death, serious physical or psychological injury, or the risk of such harm. Healthcare facilities are expected to investigate sentinel events internally to identify systemic failures. Examples include surgery on the wrong body part, medication errors causing severe harm, or undetected patient deterioration. The occurrence of a sentinel event often indicates a serious breach in the standard of care.
- Vicarious liability
- A legal doctrine that holds an employer, such as a hospital, responsible for the negligent actions of its employees performed within the scope of their employment. If a nurse, technician, or other staff member causes patient harm while carrying out their duties, the employing institution may share in the legal liability for the resulting injury.
- Corporate negligence
- A legal theory that holds a hospital or healthcare facility directly responsible for its own systemic failures, separate from the actions of any individual provider. Examples include inadequate staffing levels, poor credentialing of physicians, failure to maintain equipment, and absent or unenforced safety protocols. Corporate negligence targets the institutional decisions that created conditions for patient harm.
- Affidavit of Merit
- A sworn statement from a qualified medical professional confirming that a malpractice claim has a legitimate basis in the applicable standard of care. Under A.R.S. § 12-2603, Arizona law requires this preliminary expert opinion before a medical malpractice lawsuit can proceed. Failure to provide a sufficient affidavit can result in dismissal of the case.
- Comparative negligence
- A legal rule that allocates fault among all parties involved in an injury, including the patient. Arizona follows a pure comparative negligence system, meaning a patient can recover damages even if they were partially at fault, but the award is reduced by the patient’s percentage of responsibility. Unlike some states, Arizona does not bar recovery at any threshold of fault.
- Discovery rule
- An exception to the standard statute of limitations that applies when an injury was not immediately apparent. Under the discovery rule, the filing deadline may begin on the date the patient discovered, or reasonably should have discovered, the injury and its connection to medical care rather than the date the negligent act occurred.
- Notice of Claim
- A mandatory preliminary filing required before a lawsuit can be brought against a government entity in Arizona. For medical malpractice claims involving government-operated hospitals or facilities, this notice must be filed within 180 days of the injury. Failure to file within this window permanently bars the lawsuit, regardless of the severity of the injury or the strength of the evidence.
- Trial de novo
- A new trial conducted as if no previous proceeding had occurred. In Maricopa County, if a medical malpractice case is routed through compulsory arbitration and either party disagrees with the result, they may request a trial de novo before a judge or jury. This preserves the right to a full trial regardless of the arbitration outcome.
- Eggshell Plaintiff doctrine
- A legal principle holding that a defendant is liable for the full extent of harm caused by their negligence, even if the patient was unusually vulnerable due to a pre-existing condition. Under this doctrine, a provider cannot avoid responsibility by arguing that a healthier patient would not have been as severely injured. If negligent care aggravated or worsened an existing condition, the full extent of that aggravation is compensable.
- Contingency fee
- A fee structure in which the attorney’s compensation is calculated as a percentage of the recovery obtained for the client, with no payment required upfront. If the case does not result in a recovery, the client owes no attorney fees. In Arizona, contingency fee agreements are governed by ER 1.5 of the State Bar of Arizona’s Rules of Professional Conduct.
- Medical product liability
- A legal claim arising from harm caused by a defective medical device, implant, or pharmaceutical product. These claims may target the manufacturer, distributor, or healthcare provider who recommended or implanted the product, and they can be pursued alongside or separate from a traditional medical malpractice claim.
- A.R.S. § 12-563, Standard of Care for Health Care Providers | Arizona State Legislature
- A.R.S. § 12-542, Statute of Limitations for Personal Injury | Arizona State Legislature
- A.R.S. § 12-2603, Preliminary Expert Opinion Affidavit Requirement | Arizona State Legislature
- Arizona Constitution, Article 2, § 31 (Prohibition on Damage Caps) | Center for American Civics, ASU
- ER 1.5, Rules of Professional Conduct (Fees) | State Bar of Arizona
- Civil Department | Maricopa County Superior Court
- Civil and Tax Filing Information | Maricopa County Clerk of Superior Court
- Public Use Data File | National Practitioner Data Bank
- Adverse Events, Near Misses, and Errors | AHRQ Patient Safety Network
- To Err Is Human: Building a Safer Health System | National Academies of Sciences, Engineering, and Medicine
- Banner University Medical Center Phoenix | Banner Health
- St. Joseph’s Hospital and Medical Center | Dignity Health
- Valleywise Health | Valleywise Health
- File a Complaint | Arizona Medical Board
- Arizona Department of Health Services | AZDHS
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If you think that medical negligence, a dangerous drug, or a failed medical product caused harm to you or someone you love, our team is standing by to offer guidance. We’ll explain your options under current laws and help you move forward with clarity and understanding. Case reviews are free and 100% confidential.