Primary care standard-of-care expert
Expert class library · Medical malpractice · Either side
A family physician or general internist who testifies to the standard of care for primary care and general medicine: recognizing warning signs, ordering tests, managing medications, following up and referring or escalating care in time. Qualification fights are common, because many states require the expert to practice in the same or a similar specialty as the defendant, and an internist whose work is mostly outpatient may face a challenge when testifying against hospitalists. The causation opinion is the other weak point: testimony that earlier action could have saved a patient, without saying it probably would have, fails.
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What this expert is retained to answer
- Does the expert practice in the same or a similar specialty as the defendant, as the jurisdiction's statute requires, and did they in the year before the events?
- Is the expert's practice mainly outpatient or inpatient, and does that match the care at issue?
- Can the expert say what would more likely than not have happened with timely care, or only what could have happened?
- Which guidelines or warnings define the standard, and were they in effect at the time?
- Does a gap in the expert's own clinical practice around the time of the events affect their familiarity with the standard?
Methods
- Chart and timeline review
- Comparison of care with clinical guidelines and accepted practice
- Medication and warning label review
- Analysis of follow-up, referral and escalation decisions
- Causation analysis on what timely care would have changed
How the testimony is attacked
- Not the same specialty. Specialty-matching statutes are a frequent basis for exclusion. In Da Silva v. WakeMed the North Carolina Supreme Court held an internist who mostly oversaw outpatient care was qualified to testify against three hospitalists about a patient given an antibiotic with a black box warning, affirming the reversal of his exclusion over a dissent.
- Could, not would. Causation testimony must speak in probabilities. In Cleveland Medical Clinic v. Easley the Mississippi Court of Appeals reversed a wrongful death verdict because the plaintiff's internal medicine expert conceded he could say what could happen with earlier intensive care, not what would happen.
- A break in practice. Defendants argue an expert who was not practicing when the events occurred cannot speak to the standard of care then. In Smith v. Serafimova the Delaware Superior Court rejected that challenge to a general internist who was changing positions in the first months of the pandemic.
- Opinions outside the expert's field. Generalists are challenged when they opine on procedures performed by specialists, such as surgery or interventional radiology; the Smith court left those challenges to the weight of the testimony.
- Hindsight. Opponents argue the expert judges decisions with knowledge of the outcome rather than what the physician knew at the time.
What the public record shows
Courts have filed at least 92 opinions since 2015 that address this class of testimony under Daubert or Rule 702, as of October 4, 2026. Three that show how courts handle this class of testimony:
| Outcome | Case | Court | Year | Why |
|---|---|---|---|---|
| Exclusion reversed | Da Silva v. WakeMedNo. 326PA18 | N.C. | 2020 | The North Carolina Supreme Court affirmed the court of appeals' reversal of a trial court order disqualifying the plaintiff's internist, holding he was qualified under the state's specialty-matching Rule 702(b) to give standard of care testimony against three hospitalists who continued a black-box-warned antibiotic in a patient on steroids, and that the evidence raised a fact issue on causation, over a dissent. |
| Admitted | Smith v. SerafimovaC.A. No. N21C-08-245 JRJ | Del. Super. Ct. | 2024 | In a suit over a hospital patient who died of bleeding early in the pandemic, the court denied motions to exclude the plaintiffs' general internist, holding that his causation opinion on earlier intervention went to weight and that a gap in his clinical work while changing positions did not bar his standard of care testimony. |
| Excluded | Cleveland Medical Clinic, PLLC v. EasleyNo. 2018-CA-00329-COA | Miss. Ct. App. | 2019 | The court reversed and rendered a $744,042 wrongful death verdict against a clinic whose physicians treated a patient's gastrointestinal bleed, holding that the plaintiff's expert in internal medicine, nephrology and hospital medicine gave speculative causation testimony, conceding he could say what could happen with earlier ICU care but not what would happen, which could not support the verdict; three judges dissented. |
Each case links to the free opinion text on CourtListener.
Under amended Rule 702
Since December 1, 2023, Rule 702 says expressly that the party offering an expert must show the court it is more likely than not that the testimony meets each requirement: that it rests on sufficient facts or data, uses reliable methods, and reflects a reliable application of those methods to the case. Questions about the basis of an opinion are no longer automatically matters of weight for the jury. For how the circuits have applied the amendment, see the Rule 702 tracker, which follows each court of appeals; for what that means for preparing or attacking this class of expert, see the guide on amended Rule 702.
Related classes
- Emergency medicine standard-of-care expert
- Treating physician causation witness
- Medical standard-of-care expert
Guides
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Last reviewed October 4, 2026. How this page is built: rulings are found by searching court opinions on CourtListener, and each one is read in the opinion before it is summarised here; outcomes are labelled by what the court did with the expert's testimony. No individual expert is named. This page summarises public decisions for orientation and is not legal advice; read the opinion before relying on any ruling.