1. When the Hospital Is Responsible
Hospitals generally answer for employees’ negligent acts within the scope of employment under respondeat superior. A nurse administering the wrong medication may create hospital liability without proof that administrators separately acted negligently. The patient must still establish a departure from accepted practice and resulting injury. This distinction is central to medical malpractice litigation.
Independent Physicians and Apparent Agency
An independent physician’s mistake does not automatically become the hospital’s responsibility. Apparent agency may apply when hospital conduct causes a patient reasonably to accept treatment in reliance on the physician’s apparent hospital affiliation. Hospital forms, physician assignments, and whether the patient selected a private doctor can matter. In Dragotta v Southampton Hospital, the Appellate Division, Second Department, recognized factual disputes over apparent agency in 2007.
Following a Private Physician’S Orders
Hospital staff generally may follow a private attending physician’s orders without making the hospital liable for that physician’s prescribing mistake. Liability may arise when staff commit independent negligence or follow orders so clearly contraindicated that ordinary prudence requires questioning them. Administering a dose incorrectly and correctly administering an obviously unsafe order therefore raise different issues.
2. What the Patient Must Prove

A medical malpractice claim requires an applicable duty, a departure from accepted practice, causation, and injury. Qualified expert testimony is generally necessary when those questions involve medical judgment. A wrong dose may establish a treatment error, but the claim also needs evidence connecting that error to harm. Timing alone does not establish causation.
Connecting the Drug to the Injury
Experts evaluate the medication, dosage, timing, and patient’s condition to determine whether the departure substantially contributed to injury. The mistake need not be the only cause. However, the evidence must distinguish its effects from the underlying illness or an unavoidable complication. Recoverable compensatory damages may include additional treatment costs, lost earnings, and pain attributable to the injury.
Evaluating the Hospital’S Own Conduct
Direct negligence concerns the institution’s own failures rather than responsibility for someone else’s conduct. Allegations involving inadequate supervision or unsafe medication procedures require evidence of a breached duty and a causal connection to injury. Understaffing or the absence of barcode scanning does not, by itself, establish liability. The analysis must identify what safeguard was required and how its absence contributed to the error.
3. Records That Clarify Responsibility
The medication administration record should be compared with the original prescription, pharmacy verification, and patient’s clinical course. Electronic audit trails and dispensing logs may help identify who entered, changed, dispensed, or administered an order. Staffing records and contracts can address employment and agency questions. Preserve discharge instructions, medication packaging, and a dated account of symptoms without changing the original materials.
Missing Records and Expert Review
A discharge summary may omit details necessary to reconstruct the error. Request the complete treatment record, including medication orders and administration entries. Audit trails and other technical records may require targeted discovery. Expert review should address what each provider knew at the relevant time, avoiding assumptions based only on the eventual outcome.
4. Filing Deadlines and Required Documents
CPLR § 214-a generally requires a medical malpractice action within two years and six months of the negligent act or omission. Qualifying continuous treatment for the same condition can change the starting point. Discovering a medication error later does not ordinarily restart the clock. The statute expressly excludes chemical compounds from its foreign-object exception.
Public Hospitals Have Different Deadlines
For NYC Health + Hospitals claims, a notice of claim is generally required within 90 days after the claim arises. The lawsuit generally must begin within one year and 90 days, subject to applicable tolling rules. Courts may permit late notice in qualifying circumstances. These rules should not be applied indiscriminately to every publicly operated hospital; the responsible entity matters.
The Certificate of Merit Has Exceptions
Under CPLR § 3012-a, an attorney generally must provide a certificate accompanying the complaint after reviewing the facts and consulting a qualified physician. The attorney concludes whether a reasonable basis exists. Statutory alternatives address imminent deadlines, unsuccessful consultation attempts, and requested records not yet produced. The certificate is a filing requirement, not proof that malpractice occurred or that the patient will prevail.
02 Oct, 2026

