Most physicians encounter the legal system exactly once, and not by choice. A certified letter arrives, a claims manager calls, and for the next two or three years the case sits in the back of the mind like a stone in a shoe. That experience teaches a doctor that law and medicine are adversaries.
There is another way to meet the legal system: as the person the lawyers are asking to explain what happened. Expert witness work is a real part of a surgical or medical career, and it is one that almost nobody teaches in residency. Below are the six questions I hear most often from physicians who are curious but have not yet taken a case.
1. Why do it at all?
I will give you my own four reasons, and the first one is the one nobody says out loud.
It is fun. Every file is a puzzle. A patient did well or did not, and the answer is buried across an operative note, an anesthesia record, a pathology report, and a set of nursing entries that do not quite agree with one another. The work is detective work. You assemble a timeline, find the moment where the story changes, and figure out whether that moment mattered. No two cases are the same, and no case arrives with the answer attached. For anyone who went into medicine because they liked hard problems, this is the same pleasure in a different room.
It makes me a better doctor. Reviewing another surgeon's records forces you to read a chart the way an attorney reads it. You start noticing what your own operative notes fail to say. You notice that hemostasis was obtained
documents nothing, that a timestamp on an addendum matter, that the consent conversation you had beautifully in the pre-op area left no trace anywhere. It sharpens thinking, it improves documentation, and it makes decisions safer, because you have already seen where the same decision went wrong for someone else. It is also lifelong learning of the most demanding kind. A hard case sends you back to the primary literature to defend a position in writing, knowing a smart and motivated opponent will attack every sentence of it.
The cases teach. Every matter I review becomes material. Real cases, stripped of identifiers, are the most effective teaching tool I have, whether the audience is third-year medical students on a surgery rotation, residents, or a room full of attorneys and legal nurse consultants. Nothing holds a room like an actual chart. Experience that would otherwise stay in my head turns into lessons that change how someone else practices.
It is a teaching role. This is where the work stops being about a single case. Explaining a standard of care to a jury, mentoring a younger physician through a first retention, or showing a resident what a defensible operative note looks like all do the same thing. They raise the floor. The point of expert work is not to sit in judgment of what happened. It is to learn from it, teach from it, and improve the care that comes after it.
2. What are the real benefits?
Income that is not tied to RVUs. This is the reason most people ask, so let's address it directly. Expert work is compensated hourly for record review, report preparation, deposition, and trial, at rates that reflect specialty and experience. It is meaningful money. It is also inconsistent money. Cases arrive in clusters, settle without warning, and get continued for a year. Nobody should treat it as a salary replacement in the first several years, but as a supplement built on knowledge you already have, it is efficient.
Portability. The work travels. It can be done from home, at night, between cases, in a hotel room. There are no facility fees, no staff, no overhead beyond a laptop and a good scanner. For physicians facing a change in clinical volume, a physical limitation, or an eventual retirement, it is one of the few things in medicine that scales down gracefully instead of ending abruptly.
Professional standing. Serious expert work puts you in regular contact with attorneys, legal nurse consultants, and other experts in your specialty. It generates CLE lectures, writing opportunities, and referrals of a kind that clinical practice does not.
3. Am I qualified yet?
The bar is lower than most physicians assume and higher than they hope.
What you need is straightforward. Board certification in the relevant specialty. Active clinical practice, ideally still performing the procedure or managing the condition at issue. Familiarity with the guidelines that governed care at the time, which is not always the current version. A clean, explainable professional record, and if there is anything in yours, complete willingness to discuss it under oath.
What you do not need is a national reputation, a chairmanship, or a long publication list. Juries and arbitrators are persuaded by physicians who plainly do the work, not by CVs. A surgeon who performed forty of these operations last year is more credible than an emeritus professor who last operated in 2009.
The realistic gate is about three to five years of independent practice after training. Before that, opposing counsel will spend the deposition on your inexperience and you will spend it defending yourself instead of your opinion.
4. What does the work actually look like?
Very little of it resembles television.
A retention starts with a screening call and a conflicts check. Then records arrive, usually thousands of pages, often disorganized and duplicated. You build a chronology. You read the operative note against the anesthesia record against the nursing notes against the pathology, and you find the places where they disagree. That reconciliation is most of the value you provide.
Then comes the opinion. You decide whether the standard of care was met, and separately whether any breach caused the harm alleged. Those are two different questions and conflating them is the most common error new experts make. A physician can fall below the standard in a way that changed nothing about the outcome.
Then a written report, if the jurisdiction requires one, citing literature you have actually read. Then possibly a deposition, where the other side's job is to narrow your opinion, find its edges, and lock you into language they can use later. Then, in a small minority of cases, testimony.
Most cases never reach trial. Most of your hours are spent reading and writing alone.
5. Plaintiff, defense, or both?
Do both.
There is a persistent belief that plaintiff work is disloyal to colleagues and defense work is honest. That is not how it works. The obligation runs to the record, not to the side paying the invoice. The identical review standard applied to two different cases will sometimes find a breach and sometimes find none, and it should.
Working both sides is also the strongest protection you have in cross-examination. An attorney who wants to paint you as a hired gun needs a lopsided history to do it. An expert who can say honestly that the split runs close to even, and that the last three retentions ended in an opinion the retaining attorney did not want, is very hard to attack.
The one thing you should never do is shape the opinion to the retention. Attorneys talk to each other, and a reputation for flexibility is worth less than nothing.
6. What could go wrong?
This is the question people skip, so consider it carefully.
Your record becomes discoverable. Every board action, hospital matter, prior deposition, publication, and public statement is fair material. So is your LinkedIn profile. So is a podcast you did four years ago. If there is something in your history, it does not disqualify you, but it must be disclosed to retaining counsel at the outset and explained calmly under oath. Surprises are what damage credibility, not imperfections.
Testimony is permanent. What you say in a 2026 deposition can be quoted back to you in 2031 in an unrelated case. Consistency across your body of work matters enormously.
Time pressure is real. Depositions get scheduled around attorneys' calendars, not yours. Trial dates move and then suddenly do not. Anyone with a heavy call burden should start with one or two cases and see how it fits.
Overreach is the career risk. Opining outside your competence or stretching a causation chain past what the literature supports, invites a Daubert or Rule 702 challenge. Being excluded as an expert is public and follows you. Decline anything outside your lane, in writing, and do it early.
Where to start
Take one case. Not five.
Ask a colleague who does this work to send you a screening request. Read the records fully before you say yes to anything. Put your rates and your terms in a written retention agreement before the first hour. Write an opinion you would be comfortable reading aloud to the surgeon whose care you reviewed. Then get honest feedback on your report from someone who has been deposed many times.
The physicians who do this well are not the ones with the best credentials. They are the ones who read the whole chart, say only what they can defend, and are equally willing to tell an attorney that the case is not there.
That is the entire job.
