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When a case hinges on medical facts, the right expert witness can make or break your argument. Whether it’s a complex medical malpractice claim or a personal injury lawsuit, a qualified medical expert provides the credibility and clarity juries need to understand technical evidence. But not all experts are created equal—and finding one who can withstand cross-examination and communicate persuasively is key.
Here are the top three traits attorneys should prioritize when selecting a medical expert witness:
A solid educational background is the baseline, but real-world clinical experience in the relevant specialty—specifically extensive clinical experience—is what makes an expert’s opinion truly persuasive. Juries and judges tend to give more weight to physicians who actively practice in the same field as the case at hand, particularly in medical malpractice cases. (For example, in a birth injury case, an OB-GYN with a current hospital affiliation and years of labor and delivery experience is far more compelling than a general practitioner who hasn’t delivered a baby in decades.) An expert’s medical background and their reputation within the medical community are also crucial for establishing credibility.
Key questions to ask:
AMFS in action: Dr. David Carpenter, physician and Director of the Institute for Health and the Environment and an expert on Polychlorinated Biphenols (PCBs), testified for the plaintiffs on PCB exposure they claim left them with brain damage. Dr. Carpenter’s participation in numerous studies related to PCBs made him uniquely qualified to testify on the effects of PCB exposure. His testimony helped clarify medical facts and present medical evidence to the court, supporting the plaintiffs’ claims.
The result? A judgment in favor of the plaintiff for $185.15 million.
Watch Dr. Carpenter’s testimony.
A highly credentialed expert means little if they can’t effectively explain complex medical concepts to a lay audience. Your ideal witness should be able to break down jargon into plain language without sacrificing accuracy, and clarify complex medical issues for the court. They should remain calm, confident, and composed under pressure—especially during cross-examination.
A great medical expert knows how to tell a clear, consistent story supported by evidence. They should provide valuable insights that help the jury understand the case, avoid speculation, stay within the scope of their expertise, and explain their reasoning in a way that helps the jury connect the dots.
Red flags to look for:
AMFS in action: Dr. Suresh Moolgavkar, a medical doctor, epidemiologist and mathematician, testified for the defense and established doubt that mesothelioma is always related to asbestos exposure by explaining concepts such as “signal tumor” and spontaneous generation of tumors. The expert’s testimony provided valuable insights into the complex medical issues at the heart of the case.
The result? The jury unanimously ruled in favor of the defense while deliberating for only a few hours.
Watch Dr. Moolgavkar’s testimony.
An expert’s past experience in legal settings matters—especially when it comes to writing expert reports, participating in legal proceedings and legal cases, preparing for deposition, and presenting testimony at trial. Thorough preparation and practice sessions are essential parts of readiness for court. A seasoned expert knows what to expect in the courtroom and can anticipate the kinds of challenges opposing counsel may raise.
However, objectivity is just as important. Judges and juries can quickly spot someone who always testifies for one side or who stretches their opinion to fit the attorney’s narrative. The most credible experts are those who take their role seriously and demonstrate a commitment to impartiality.
What to look for:
AMFS in action: Dr. Micheal Zeide, an orthopedic surgeon, testified for the defense in a personal injury case that alleges a knee injury was the result of a car accident. Dr. Zeide used anatomical props and referenced medical reports and MRI images to support his testimony. His thorough review of medical records and independent medical exams played a crucial role in supporting the defense’s legal arguments.
The result? The judge’s ruling favored the defense.
A medical expert witness must be more than just a physician with a nice resume; they need to be a strategic asset to your legal team. The right expert offers a blend of deep clinical insight, persuasive communication, and litigation credibility. By focusing on finding an expert with these three traits, you’ll be better equipped to find a trusted partner who can help strengthen your case and win over the jury.
Looking for an expert medical witness to make the difference on your next case? Partner with AMFS, the nation’s largest network of pre-screened, board-certified medical expert witnesses. Check out our expert directory to get started!
The medical expert witness partner for attorneys serious about building a winning case
AMFS is your trusted source for highly-qualified medical expert witnesses. After pioneering the field nearly three decades ago, we’re continuing to redefine medical expert witness services by providing value far beyond a referral alone.
Our Physician Medical Directors know what it takes to build a strong case. Our medical expert witnesses leave no doubt. And our case managers streamline billing and logistics every step of the way, letting you focus on what you do best: constructing your winning case. Explore why AMFS clients expect more from their medical expert witnesses—and get it.
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