Cabral v. Pali Momi Medical Center — revived apparent-authority claim against hospital for contract physician’s alleged negligence

Case
Leslie Cabral, individually and as Personal Representative of the Estate of Leonard Cabral, Jr.; Leonard Cabral, Sr.; and Nicholas Cabral v. Pali Momi Medical Center
Court
Hawaii Intermediate Court of Appeals
Judge
Karen T. Nakasone (David Y. Ige, 2020); Keith K. Hiraoka (David Y. Ige, 2018); Clyde J. Wadsworth (David Y. Ige, 2019)
Date Decided
August 18, 2026
Docket No.
CAAP-24-0000431
Topics
Medical Malpractice; Apparent Authority; Informed Consent; Juror Misconduct
Source
Read the full opinion

Background

Thirty-one-year-old Leonard Cabral, Jr. went to Pali Momi Medical Center’s emergency room with chest pain and shortness of breath. He signed the hospital’s consent-for-treatment form, was admitted, and was released the next day with instructions to obtain further testing. He died five days later.

His family and estate sued Pali Momi and others for medical malpractice. Their expert asserted that contract physician Dr. Shayne Castanera misdiagnosed Cabral’s heart attack and coronary artery spasm and failed to provide treatment that could have prevented his death. The circuit court granted Pali Momi partial summary judgment on vicarious liability and informed consent, and a jury later found that Pali Momi was not negligent through its employees. The court also rejected a new-trial motion alleging that the jury foreperson had viewed information about Cabral’s father online.

The Court’s Holding

The Intermediate Court of Appeals held that a hospital may be vicariously liable for an independent contractor physician’s professional negligence under apparent-authority principles. A plaintiff must prove that the patient reasonably believed the hospital authorized the physician to provide treatment, that the hospital did or permitted something that produced that belief, and that the patient relied on the physician’s apparent authority.

Viewed in the Cabrals’ favor, the evidence could allow a reasonable jury to find apparent authority because Pali Momi contracted for Dr. Castanera to treat its patients, required Cabral to sign its consent form, and the record did not show that Dr. Castanera was Cabral’s personal physician. The court therefore vacated summary judgment on vicarious liability and remanded that claim, including related negligent-infliction-of-emotional-distress claims. It affirmed the informed-consent ruling because the Cabrals produced no evidence that Dr. Castanera proposed a treatment or procedure triggering statutory disclosure duties.

The court also affirmed the denial of a new trial for alleged juror misconduct. The Cabrals’ screenshots did not provide specific, substantial evidence that the foreperson accessed the website, viewed information about Cabral’s father, or did so before the verdict. The court affirmed the jury’s verdict concerning Pali Momi’s employees and held that the challenge based on the manifest weight of the evidence was waived for lack of appellate argument.

Key Takeaways

  • A Hawaii hospital may face vicarious tort liability for an independent contractor physician under an apparent-authority theory.
  • A hospital’s treatment arrangements and patient-facing consent documents may support a reasonable belief that a contract physician was authorized to act for the hospital.
  • An informed-consent claim requires evidence of a proposed medical or surgical treatment or diagnostic or therapeutic procedure that triggered the statutory disclosure duty.
  • A juror-misconduct claim requires specific, substantial evidence that the alleged outside influence actually occurred and could have caused substantial prejudice.

Why It Matters

The published opinion recognizes an apparent-authority route to hospital liability for the professional negligence of nonemployee physicians. Hospitals cannot necessarily avoid vicarious liability merely by classifying a treating physician as an independent contractor when their own conduct could reasonably cause patients to perceive the physician as hospital-authorized.

The ruling does not establish that Pali Momi or Dr. Castanera was negligent. It permits the Cabrals to pursue that theory on remand while leaving intact the defense verdict concerning the hospital’s employees and the dismissal of the informed-consent claim.

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