A doctor at a Costa Rican hospital has shared new details about Miller Gardner’s medical emergency and tragic passing.
Dr. Kevin Gannon, who oversees Quepos Urgent Care Hospital in Quepos, Costa Rica, told Us Weekly that his team rushed to resuscitate Miller after receiving an emergency call from his hotel on Friday, March 21.
Emergency Response and Failed Resuscitation Efforts
While speaking to Us Weekly on Wednesday, March 26, Gannon, who did not personally treat Miller, explained that the hospital’s medical team was dispatched to the Arenas Del Mar Beachfront & Rainforest Resort. The 14-year-old son of former New York Yankees star Brett Gardner had been vacationing there with his family.
“We received a call from the hotel and responded immediately,” Gannon stated. “The emergency involved a non-responsive 14-year-old male. A licensed physician, a nurse, and an ambulance first response driver arrived at the scene.”
Upon arrival, they found Miller without vital signs while his family members were present. The medical team performed advanced life support CPR for 30 minutes before declaring him dead. Authorities were then notified.

Investigation and Autopsy Findings
Autopsy results remain pending. “We don’t know what caused this,” Gannon admitted. He declined to discuss Miller’s medical history or speculate on the cause of death but mentioned that other family members experienced gastrointestinal symptoms.
Earlier that Wednesday, Costa Rica’s Judicial Investigation Agency (OIJ) informed Daily Mail that the Gardners—Brett, 41, his wife Jessica, their older son Hunter, and Miller—had suffered severe stomach cramps, vomiting, and diarrhea after dining at a nearby restaurant on Thursday, March 20.
Toxicology and Further Investigation
An OIJ representative clarified to Us Weekly on Tuesday that asphyxiation was ruled out after authorities confirmed Miller’s airways were unobstructed. Investigators are now exploring whether the medication given to Miller contributed to his death.

Delays in Autopsy Results
Due to rising gang violence in Costa Rica, autopsy and toxicology results may take months. “We’re seeing a surge in homicides as drug gangs battle for territory, and every one of these cases requires an autopsy,” the OIJ official told Daily Mail.
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