Medical malpractice claims in Arizona require an attorney to prove four elements: duty, breach of the standard of care, causation, and damages. According to the National Academy of Medicine, medical errors play a role in thousands of preventable patient deaths every year. A Phoenix medical malpractice lawyer builds the case by establishing and proving each element.
The Four Elements of Medical Malpractice in Arizona
Every medical malpractice case in Arizona must prove four legal elements. If any one fails, the case fails.
- The medical provider owed a duty of care. This means that the medical provider must have owed a legal duty to the patient. This usually means a doctor-patient relationship existed. Duty is typically the easiest element to prove.
- The provider breached the standard of care. The provider’s actions or inactions fell below the accepted standard of care. The standard is what a reasonably prudent provider in the same specialty would have done.
- The breach actually caused the patient’s injury. This means proving the harm would not have occurred if the provider had met the standard of care.
- The patient suffered damages or actual harm. Damages include medical bills, lost wages, pain and suffering, future medical needs, and loss of enjoyment of life.
The Four Elements at a Glance
| Element | What It Means | How It’s Proven |
| Duty | Doctor-patient relationship existed | Medical records, treatment history |
| Breach | Provider deviated from standard of care | Expert witness testimony |
| Causation | The breach caused the injury | Expert testimony, medical evidence |
| Damages | Actual harm resulted | Medical bills, treatment records |
How the Standard of Care is Established
The “standard of care” is the legal benchmark for medical providers. Proving this breach requires medical expertise.
First, expert testimony is required by the Arizona courts. This establishes the standard of care, and whether the defendant met it. Plus, the medical community defines the standards, not the courts.
The expert witness must typically come from the same medical specialty as the defendant. For example, an orthopedic surgery case requires an orthopedic surgery expert. An emergency medicine case requires an emergency medicine expert.
Expert witnesses review medical records, imaging, and treatment notes to determine:
- What the accepted standard of care was at the time
- Whether the defendant met that standard
- If not, how the deviation specifically caused harm
Defense attorneys also retain experts. They testify that the standard was met. Cases often come down to a “battle of the experts” where credibility and the quality of analysis determine the outcome.
Our team identifies and retains the right specialist experts early in the case. The choice of expert can determine the outcome.
Why Arizona Requires an Expert Affidavit
Arizona has a unique procedural requirement designed to filter out non-meritorious medical malpractice claims. Under ARS § 12-2603, Arizona requires plaintiffs to file an affidavit from a qualified expert. The affidavit must state that the case has medical merit. Also, it must address:
- The expert’s qualifications
- The applicable standard of care
- How the defendant deviated from it
- How the deviation caused the patient’s injury
Once the defense formally requests the affidavit, the plaintiff has 30 days to file it. Failure to file can result in dismissal.
The affidavit requirement makes it essential to identify and retain expert witnesses early. A Phoenix medical malpractice lawyer cannot wait until late in the case. See what we do for you in serious injury cases for our broader approach.
What Damages Can You Recover in an Arizona Medical Malpractice Case?
Arizona is one of the most plaintiff-friendly states for medical malpractice damages. The state has a key constitutional protection.
Arizona’s constitutional protection: Article 2, Section 31 of the Arizona Constitution prohibits caps on damages in personal injury and wrongful death cases. Arizona has no statutory cap on non-economic damages, unlike many states that cap them at $250,000 or $500,000.
Economic Damages
Economic damages cover quantifiable financial losses. These include the following:
- Past and future medical bills
- Lost wages and lost earning capacity
- Cost of ongoing care and rehabilitation
- Out-of-pocket expenses
Non-Economic Damages
Non-economic damages may be harder to quantify. But they’re still essential to any personal injury case. These compensate for harm without a clear dollar value:
- Pain and suffering
- Emotional distress
- Loss of consortium for spouses
- Loss of enjoyment of life
Punitive Damages
Arizona allows punitive damages for negligent or reckless behavior. These appear in cases involving deliberate misconduct.
Our team handles cases for clients across Phoenix and the rest of Arizona.
Common Questions About Phoenix Medical Malpractice Cases
What does a Phoenix medical malpractice lawyer have to prove?
A Phoenix medical malpractice lawyer must prove four different elements in a case. First, a doctor-patient relationship had to exist. Then, there must be a breach of that care. The poor behavior caused the injury and truly harmed the patient.
What is the standard of care in Arizona medical malpractice cases?
The standard of care is what a reasonable medical provider, in the same field, would have done in a similar situation. Expert witnesses set what the standard required. They also help determine whether the defendant met it. The standard varies by specialty and by the medical issue.
Why does Arizona require an expert affidavit in medical malpractice cases?
ARS § 12-2603 requires plaintiffs, in medical malpractice cases, to file a Preliminary Expert Opinion Affidavit. This document confirms that a qualified expert reviewed the case. The expert must believe the defendant deviated from the standard of care.
How long do I have to file a Phoenix medical malpractice claim?
Typically, you gave two years from the date of the injury. ARS § 12-542 sets Arizona’s general personal injury statute of limitations. The discovery rule may extend this period if the injury was not immediately clear.
Are there damage caps in Arizona medical malpractice cases?
No, Arizona does not have damage caps. Article 2, Section 31 of the Arizona Constitution prohibits laws that cap damages in personal injury and wrongful death cases. Arizona has no statutory cap on either economic or non-economic damages in medical malpractice cases. This makes Arizona one of the most plaintiff-friendly states.
How much does a Phoenix medical malpractice lawyer cost?
Most plaintiff-side firms, including Alexander Shunnarah Trial Attorneys, work on a contingency fee basis. You pay nothing upfront. Instead, you only pay if your team wins a verdict or settlement in your favor.
Trust Alexander Shunnarah Trial Attorneys Today
Proving a Phoenix medical malpractice case requires understanding the four legal elements. These include the standard of care, the expert affidavit requirement, and Arizona’s damages framework. Our trial team has handled medical malpractice and serious injury cases against negligent providers, hospitals, and insurers across Arizona and nationwide. Schedule a free case review today.
Reviewed by Alexander Shunnarah, Attorney and Chief Executive Officer at Alexander Shunnarah Trial Attorneys on 2026-06-03.
Bio: https://shunnarah.com/attorney/alexander-shunnarah/
