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What are the differences between a medical expert witness and an IME?

By Angela Todd July 1, 2025
What are the differences between a medical expert witness and an IME?

At AMFS, we’re committed to providing you with the top experts your case needs. That’s why we maintain the nation’s most extensive network of medical expert witnesses,  spanning over 200 medical and healthcare specialties. We’re excited to announce that we are expanding our network to include even more Independent Medical Examiners (IME) in addition to the quality expert witnesses you’ve come to expect from AMFS.  

While the expertise behind a medical expert witness and an IME is similar, their functions in the legal system are very different. So, what is the difference between a medical expert witness and an independent medical examiner?  

Medical Expert Witness
Medical expert witnesses review medical records pertaining to the case. They do not physically examine the injured party.  The purpose of their review varies from determining if a case has merit to writing reports or affidavits based on the information in the records. Medical expert witnesses may also be called to testify on their findings if a case proceeds to trial. Medical expert witnesses are often used in medical malpractice, workers’ compensation, insurance fraud, and personal injury cases.  

Independent Medical Examiner (IME)
An IMEis a neutral third-party expert who physically examines the injured party at the request of either the plaintiff or defense. The IME may assess damages, future treatment options or a person’s physical and mental capacity depending on the needs of the case. IMEs can also conduct Compulsory Medical Examinations known as a CMEs. CMEs function the same way as an independent medical exam, however the CME is recorded with either audio or video. IMEs are most commonly used in workers’ compensation and personal injury cases.  

Medical expert witnesses and IMEs play a crucial role in building your case and it’s vital to work with one that is experienced and well-vetted. By working with AMFS, you’ll get access to our extensive expert witness network and access to a free case consultation with an AMFS Medical Director. Get started with your search today! 

About AMFS

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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