Thaete v. St. Luke’s — Revived malpractice claims based on the attending physician’s alleged prescribing error

Case
Keith Thaete, Steve King, and Lance Thaete v. St. Luke’s Magic Valley Medical Center and Michael R. Fry, D.O.
Court
Idaho Supreme Court
Judge
MEYER (appointment info not available)
Date Decided
July 29, 2026
Docket No.
51546
Topics
Medical malpractice; Expert testimony; Summary judgment; Appellate procedure
Source
Read the full opinion

Background

Keith Thaete brought his wife, Sherry Thaete, to St. Luke’s Magic Valley Medical Center after she became disoriented and unable to communicate. He brought bottles of Nardil and Ativan to the hospital. Evidence differed over whether attending physician Michael R. Fry knew about the Nardil prescription, although an emergency-room nurse recalled handing the bottles to Dr. Fry and seeing him examine them.

Dr. Fry prescribed Paxil, which Sherry’s psychiatrist had discontinued when starting Nardil. The two drugs are contraindicated when taken together. Hospital staff administered Paxil, and Sherry died two days after admission. Her husband and sons sued Dr. Fry and St. Luke’s under Idaho’s Medical Malpractice Act. The district court struck or excluded the plaintiffs’ expert evidence and granted summary judgment to the defendants because the plaintiffs lacked admissible testimony establishing the applicable standards of care and breach.

The Court’s Holding

The Idaho Supreme Court held first that the plaintiffs’ failure to serve their timely filed notice of appeal was not jurisdictional. Although Idaho’s appellate rules require service, only timely filing is jurisdictional. Because the defendants learned of the appeal, participated fully, and showed no resulting prejudice warranting dismissal, the Court reached the merits.

On the expert issues, the Court held that the district court abused its discretion by striking Dr. McIlraith’s August 28 declaration in its entirety and erred in finding that he lacked an adequate foundation under Idaho Code sections 6-1012 and 6-1013 to testify about the standard of care applicable to Dr. Fry. The district court permissibly struck the plaintiffs’ late August 29 supplemental response, however, and correctly concluded that Nurse Chisum’s disclosure did not state an opinion that St. Luke’s nursing staff breached the applicable standard of care. The Supreme Court therefore vacated the amended judgment, partially reversed the summary-judgment order, and remanded for further proceedings.

Key Takeaways

  • Timely filing—not service—of an Idaho notice of appeal is jurisdictional, although a service violation may still support discretionary sanctions.
  • A medical expert’s standard-of-care foundation must be evaluated from the facts showing actual familiarity with the relevant community standard; the Supreme Court found Dr. McIlraith’s foundation sufficient.
  • The physician-related malpractice claims may proceed, but the plaintiffs’ disclosed nursing expert evidence did not establish a breach by St. Luke’s nursing staff.

Why It Matters

The decision reinforces that Idaho courts must distinguish between jurisdictional appellate defects and procedural violations that call for discretionary sanctions. It also cautions trial courts against excluding otherwise admissible medical-malpractice testimony when an expert has adequately demonstrated familiarity with the applicable standard of care.

For malpractice litigants, the ruling also underscores the importance of complete expert disclosures. A disclosed opinion describing the standard of care is not enough unless the disclosure also states that the defendant breached it.

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