Medical Record Review for Medical Expert Witnesses, IMEs and QMEs

At deposition, opposing counsel will ask which records the expert reviewed, whether the expert read all of them, and where each finding appears in the chart. Each answer should point to a document the expert can hand over, such as the records index or a chronology with a citation on every entry. Getting there takes work on both sides. The firm sends a complete, indexed record in a predictable order and tracks what is still missing. The expert checks every chronology entry against its source page before relying on it, lists the chronology among the materials considered, and keeps opinions out of it.

This guide is for the firm that retains a medical expert and for the physician who has to defend the review under oath. For what a medical chronology is, see our explainer on AI medical chronologies.

What Each Expert Role Needs From the Record

What the expert sees, and what the other side can demand about it, turns on the expert's role.

Role	Who selects the records	How complete the record should be	Disclosure rule
Consulting expert (not expected to testify)	Retaining attorney	Often a partial set for a merit screen	Discoverable only on a showing of exceptional circumstances (FRCP 26(b)(4)(D)); that protection ends if the expert is later designated to testify
Retained testifying expert	Retaining attorney, then supplemented through discovery	The complete record	Written report listing "the facts or data considered by the witness" (FRCP 26(a)(2)(B))
Treating physician testifying about their own care	The physician's own chart	Their own records; reviewing outside records to form new opinions can trigger the full written report required of retained experts	The party serves a summary of the facts and opinions (FRCP 26(a)(2)(C))
Independent medical examiner (IME)	The party requesting the exam, usually a carrier or defense counsel	Whatever the requesting party sends, which the other side will check for missing records	For a court-ordered exam in federal court, FRCP 35(b) entitles the examined party to the report on request; state rules govern state cases and carrier-arranged exams
Qualified medical evaluator (QME), California workers' compensation	Both parties, under state service rules	Records served on the opposing party at least 20 days before they reach the evaluator (8 CCR 35)	Report must name everyone who performed services for it (Labor Code § 4628)
Agreed medical evaluator (AME), California	Both parties, under the same service rules	Same as a QME	Same as a QME

Two existing guides go deeper on the roles themselves: the three tiers of medical expert involvement for merit reviewers, consultants, and testifying experts, and QME vs. AME vs. IME for the California workers' compensation process.

What a Firm Should Send a Medical Expert and in What Order

Records that arrive in batches with no index cost the expert time and give opposing counsel an opening. A predictable transmittal also gives the firm a clean answer when opposing counsel asks what the expert was given and when.

An engagement letter with the specific questions. Scope the assignment before any records go out. Facts counsel provides are discoverable if the expert considers them, and assumptions if the expert relies on them, so state them with care.
A records index. List every provider, the date range each production covers, the Bates range, and the custodian or certification that came with it.
The complete records, organized by provider. Keep each provider's production intact and in its original order, with Bates numbers applied.
Imaging, with the images and the reads. A radiology report without the underlying study limits what a specialist can say.
Pharmacy and billing records. Fill histories and bills often show treatment the clinical notes never mention.
Pre-incident records. The baseline decides causation and apportionment arguments, and its absence is the first thing an opposing expert looks for.
Depositions and prior examination reports. Include earlier IME reports and treating physician depositions.
The opposing side's expert reports. Send them as soon as they are disclosed, so the expert can respond point by point.
A list of known missing records. Name the provider, the date range, and the status of each outstanding request or subpoena.
Supplemental productions with a change log. When new records arrive after the expert has started, say what changed and where it falls in the timeline.

Records containing protected health information should go out within the terms of the authorization, court order, or qualified protective order they were produced under (45 CFR 164.512(e)), and substance-use treatment records covered by 42 CFR Part 2 need their own consent or court order. Send the file through a secure portal with access logging, which also answers "what did you receive, and when."

How to Build a Chronology That Holds Up Under Cross-Examination

Cross-examination on a record review tends to run through the same questions. The table pairs each one with the document that answers it.

What opposing counsel asks	What answers it
Which records did you review?	A materials-considered list with Bates ranges, matching the records index
Did you read all of it?	A count of pages reviewed, pages that were illegible, and pages still outstanding, plus a log of when the review happened
Where in the chart does it say that?	A page or Bates citation on every chronology entry
Are those your words or the doctor's?	Entries that quote the record, with any paraphrase marked as the reviewer's
Is that the same visit recorded twice?	Duplicates marked and cross-referenced, kept in the file
Who prepared this summary?	A note of who built each part of the chronology and who checked it against the source
Did you see the records produced after your report?	Version dates on the chronology, tied to each supplemental production

Keep the expert's opinions out of the chronology itself, so it stays a record of what the chart says. Where two providers describe the same event differently, flag the conflict in the entry with both citations, and the expert can deal with it before opposing counsel raises it.

Federal Rule of Evidence 702, as amended in December 2023, requires the proponent to show the court that it is "more likely than not" that the testimony "is based on sufficient facts or data." An expert who cannot point to the records behind an opinion gives the other side a sufficiency argument under Rule 702(b), and a page citation on each entry answers it. State courts apply their own tests, including Frye in New York and the Sargon gatekeeping standard in California, and a thin record review invites the same attack under each.

When Someone Else Built the Chronology

Paralegals, nurse consultants, vendors, and software often build the chronology before the expert opens the file, and anything handed to the expert can end up on the materials-considered list.

Federal cases. A testifying expert's report must list "the facts or data considered by the witness in forming" the opinions. The 2010 Advisory Committee note says that phrase covers "any material considered by the expert, from whatever source, that contains factual ingredients." Communications between counsel and a retained testifying expert are generally protected, but the protection does not reach communications that "identify facts or data that the party's attorney provided and that the expert considered." Courts read "considered" broadly. In Pertile v. General Motors (D. Colo. 2017), the court cited with approval the test from In re Mirena IUD (S.D.N.Y. 2016): anything the expert "received, reviewed, read, or authored" in forming the opinion, where the subject matter relates to it.

A chronology a firm hands its testifying expert is therefore likely to be disclosable, and any notes inside it may travel with it. The safer workflow is for the expert to check the chronology against the source pages, list it among the materials considered, and keep their own review notes separate from anything counsel prepared. Rule 26(b)(4)(B) protects drafts of the report, but courts differ on whether an expert's working notes count as drafts.

California QMEs. Labor Code § 4628 says that no one other than the signing physician may take part in the nonclerical preparation of a medical-legal report, and it names "reviewing and summarizing prior medical records" as one of those tasks. Subdivision (c) lets a non-physician excerpt records for the physician, provided the physician reviews the excerpts. The summary and the conclusions have to be the physician's own work, and the report must "disclose the name and qualifications of each person who performed any services in connection with the report." A report that falls short of the statute can be ruled inadmissible.

In Gurrola Martinez v. H & H Wallboard, the defense argued that a QME had let a third-party service summarize the medical records, and the workers' compensation judge struck his reports in May 2025. In August 2025 the Appeals Board rescinded that order because the QME had no notice or chance to respond, while calling the judge's reading of § 4628 "very likely" correct. Panel decisions are not binding precedent. For a QME, the practical line is that any outside help should stay on the excerpting side of § 4628(c), with the physician reviewing the excerpts, writing the summary, and naming the help in the report.

This section describes the rules and cases; it is not legal advice for any specific matter.

What Courts Have Said About AI in Expert Work

Of the four admissibility rulings below, Ferlito is the only one where an expert's use of AI did not cost him, and he used it after his report was written. In Kohls and LeDoux, citations nobody checked cost experts their testimony.

Case	What happened	What it means for record review
Kohls v. Ellison (D. Minn. Jan. 2025)	An expert declaration drafted with help from GPT-4o cited two articles that do not exist. The court excluded it, finding that the errors "undermine its competence and credibility."	Checking each cited article against its source would have caught both errors.
Matter of Weber (N.Y. Sur. Ct. Oct. 2024)	A damages expert used Microsoft Copilot to cross-check his calculations and could not say what he had entered. The trial-level court found his testimony unreliable on several grounds and stated that "counsel has an affirmative duty to disclose the use of artificial intelligence" in evidence before it is admitted.	Save prompts and outputs, since the expert here could not reconstruct what he had entered.
Ferlito v. Harbor Freight Tools (E.D.N.Y. Apr. 2025)	After writing his report, an expert used ChatGPT to confirm findings drawn from decades of experience. The motion to exclude him was denied.	The court admitted the testimony where the expert formed the opinion first and used the tool afterward.
LeDoux v. Outliers (W.D. Wash. Aug. 2026)	Plaintiff's counsel used AI to generate a citation table and gave it to two experts, and was sanctioned $3,000 under Rule 11 in July. In August the court excluded a third expert, Dr. Holguin, citing counsel's involvement in drafting his materials list with AI and his own lack of diligence in verifying the sources, and found that "the hallucinated citations undermine Dr. Holguin's entire report." It then granted summary judgment.	The expert lost his report over a materials list counsel drafted with AI and he did not verify, so material a firm hands its expert needs the same checking as the expert's own work.
Conservation Law Foundation, Inc. v. Shell Oil Co. (D. Conn. May 2026)	A magistrate judge compelled discovery of the AI prompts an expert and her team used, reasoning that "an expert witness's methodology is fair ground for discovery," as reported by Mayer Brown. As of September 2026 the order is stayed pending the district judge's ruling on an objection.	Plan for prompts and AI logs to be requested in discovery.

Proposed Federal Rule of Evidence 707, published for comment in August 2025, would have applied the Rule 702 standard to machine-generated evidence offered without an expert. In May 2026 the Advisory Committee on Evidence Rules declined to advance it, reworked the draft around artificial intelligence, and held it for further study. Under Rule 702 as it stands today, an expert who uses software to organize a file still owns the opinion and has to be able to show the source for each fact it rests on.

Where Superinsight Fits

Superinsight builds the cited chronology an expert reviews, from the full record set.

Entries that quote the chart. Each entry records what the provider wrote, with the date and the author, and the chronology can be narrowed to the conditions at issue in the question the expert was asked.
A source citation on every entry. The expert opens the cited page from the entry and checks the finding against the chart.
Searchable records. Handwritten notes, scans, and exports from any records system can be searched, so the expert can pull up a specific note mid-evaluation.
A log of the expert's review. Every review the expert performs is logged with its time, place, and duration, and on demand the log becomes a signed report of the entire engagement for the expert to produce. The log shows when and for how long the expert worked in the record. Like any review record it is discoverable, so it is most useful when the time recorded fits the size of the file.

The attorney or expert checks each entry against its cited page before relying on it. For a QME, the quoted, page-cited entries serve as excerpts the physician reviews, and the summary and conclusions in the report remain the physician's own.

For firms, Superinsight also runs an expert network backed by a referral practice with more than 50 years of experience placing medical experts. Matching runs from the case record, experts answer case-specific questions before committing, and licenses and board certifications are confirmed with the boards themselves. Physicians join at no cost and bill their own rates; attorneys pay the referral fee. The page for medical examiners shows how the review tools work.

Frequently Asked Questions

What records does a medical expert witness review?

A testifying expert should review the complete record that bears on the opinion: records from every treating provider, imaging and the reads, pharmacy and billing records, pre-incident records, prior examination reports, and relevant depositions. A consulting expert screening a case for merit often starts with a smaller set, and the full record follows if the case goes forward.

What types of medical expert witnesses are there in a federal civil case?

For disclosure purposes, federal civil cases separate the consulting expert who will not testify, the retained testifying expert who must produce a written report, and the treating physician who testifies about their own care, for whom the party serves a shorter summary disclosure. Each receives different records and faces different discovery rules.

Is the chronology a law firm gives its expert discoverable?

Often, yes. Federal Rule 26 requires a testifying expert to disclose the facts or data they considered from any source, and the protection for attorney-expert communications does not cover facts or data counsel provided. A chronology the expert read is usually treated as considered, so the expert should verify it against the source records and list it among the materials considered.

Can expert witnesses use AI to review medical records?

No federal or California rule bars it, though some judges' standing orders require disclosure of AI use in filings. A federal court let an expert testify after he used AI only to double-check conclusions he had already reached, and other courts have excluded expert work built on AI-generated citations nobody verified. The expert has to stand behind every fact the opinion rests on and should check each one against the cited page.

Can a QME use a record summary service or AI in California?

Labor Code § 4628 reserves reviewing and summarizing prior medical records for the signing physician. A non-physician, or a tool, may excerpt records for the physician's review, but the summary and conclusions must be the physician's own work, and the report must name each person who performed services for it.

What disqualifies a medical expert's opinion?

Under Federal Rule of Evidence 702, a court can exclude an opinion that is not based on sufficient facts or data or that does not reliably apply the expert's method to the facts of the case. Fabricated or unverified AI-generated citations have led to exclusion in federal court, and an opinion the proponent cannot tie to the record is open to the same challenge.

How much do medical expert witnesses charge?

Published surveys put typical hourly rates in the mid-hundreds of dollars. SEAK's 2024 survey of more than 1,600 experts across all fields put the median at $450 an hour for file review and $500 for testimony. Expert Institute's averages across all expert witnesses run somewhat lower: about $356 an hour for initial case review, $448 for depositions, and $478 for trial testimony. Rates vary by specialty and region.

How does Superinsight document an expert's review of the record?

Every review is logged with its time, place, and duration, and on demand the log becomes a signed report of the engagement for the expert to produce. Paired with a chronology in which every entry cites its source page, the log documents what the expert worked from and when.

Get the Record Ready for Your Expert

Attorneys can book a demo to see what the chronology returns on the case type they handle most, or read how firms work with the expert network. Physicians can join the network by sending a CV and a fee schedule, plus a W-9 for payment.