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S.D.N.Y.Substantive rulingFiled Apr. 21, 2025

Darley v. United States

Judge
Philip Halpern
Docket
7:22-cv-00714
Court
U.S. District Court · Southern District of New York
Pages
12
TortSummary JudgmentPro Se
In one sentence

In Darley v. United States, Judge Halpern granted the United States summary judgment and denied as moot Darley’s motion to exclude expert testimony.

Who this affects

Nicholas Darley’s Federal Tort Claims Act negligence and medical-malpractice claims were dismissed on summary judgment; the United States prevailed, and Darley’s motion to exclude the government’s expert testimony was denied as moot.

What happened

Darley v. United States concerned Nicholas Darley’s claims under the Federal Tort Claims Act for negligence and medical malpractice based on treatment of painful lipomas while he was receiving care at a federal correctional facility. The United States was the only remaining defendant.

The court ruled that Darley’s negligence claim was really a medical-malpractice claim because it challenged medical examinations, diagnosis, treatment, referrals, and medication. The court also ruled that his medical-malpractice claim required expert testimony, which Darley did not provide, and that the alleged errors were not obvious enough for a jury to evaluate without an expert.

Judge Halpern granted the United States’ motion for summary judgment, dismissing both claims, and denied as moot Darley’s motion to exclude the government’s expert testimony. The court directed the clerk to close the case.

The detailed version

For law students, journalists, and other readers who want the full reasoning

Case
Darley v. United States · No. 7:22-cv-00714
Judge
Philip Halpern
Date
Apr. 21, 2025

Background

Nicholas Darley proceeded without a lawyer and without paying the filing fee. He sued the United States under the Federal Tort Claims Act, asserting negligence and medical-malpractice claims based on medical care he received at Federal Correctional Institution Otisville. Earlier in the case, the court granted the other defendants’ partial motion to dismiss, leaving the United States as the sole defendant.

Darley began seeking treatment in October 2017 for lumps on his lower abdomen and lower back. Medical staff identified the lumps as lipomas, which the opinion defines as benign tumors composed chiefly of fat cells. Over more than a year, staff provided various treatments, scans, and medications. Darley continued to report pain and later nausea and vomiting. In March 2019, he was referred to a general surgeon. An outside doctor recommended surgery, and Darley underwent surgery in September 2019. The opinion states that he had no further pain from the former lipoma sites or abdominal pain after the surgery.

The United States moved for summary judgment, which asks whether the evidence shows that no genuine dispute of important fact requires a trial and that the moving party is entitled to judgment under the law. Darley moved to exclude the testimony of the United States’ expert, Dr. Aaron Manson.

Negligence Claim

The court applied New York law because the alleged acts and omissions occurred at FCI Otisville, which is in New York. Under New York law, a negligence claim based on the same medical-treatment facts as a medical-malpractice claim is duplicative when the alleged duty arose from the doctor-patient relationship or was substantially related to medical treatment.

The court concluded that Darley’s negligence claim challenged medical treatment, including the medical examination, diagnosis, treatment, and delay in referral to a surgeon. The court therefore held that the claim sounded in medical malpractice rather than ordinary negligence. It granted the United States’ motion for summary judgment dismissing the negligence claim as duplicative.

Medical-Malpractice Claim

Under New York law, a medical-malpractice plaintiff generally must provide expert testimony to establish that medical care departed from accepted practice and that the departure caused injury. Expert testimony is not required only when the alleged departure is so clear and obvious that an ordinary person could evaluate it without specialized medical knowledge.

Darley did not present expert testimony, even though the court had extended the expert-discovery deadline to give him time to retain a medical expert. The court rejected his argument that his continuing pain and the delay before surgery were matters that ordinary jurors could evaluate without expert assistance. The court held that his allegations concerning treatment of the lipomas, referral to an outside surgeon, and prescribed medication involved medical diagnosis and treatment beyond a layperson’s ordinary understanding.

Because Darley lacked the required expert testimony and the alleged malpractice was not clear and obvious, the court held that he could not establish a prima facie case of medical malpractice. It granted the United States’ motion for summary judgment dismissing that claim. The court stated that it therefore did not need to reach the United States’ other arguments concerning the medical-malpractice claim.

Motion to Exclude and Disposition

Because the court did not need the United States’ expert report to decide the summary-judgment motion, it denied Darley’s motion to exclude Dr. Manson’s expert testimony as moot.

Judge Halpern’s conclusion granted the United States’ motion for summary judgment and denied as moot Darley’s motion to exclude expert testimony. The clerk was directed to terminate the pending motions, mail Darley a copy of the opinion and order, and close the case.

The authoritative version

Read the full 12-page opinion on CourtListener, the free public archive maintained by the Free Law Project.

Open opinion PDF →
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