14 Hospitalized at Chainsmokers Concert in San Jose, Second Mass Medical Response in Weeks

Fourteen people were hauled off in ambulances Friday night during a Chainsmokers concert at Discovery Meadow in San Jose. Fourteen ambulances, fourteen patients, one show.

The San Jose Fire Department says it got the first call at 8:22 p.m. on September 4, roughly three hours into the 18-and-over outdoor event. Within minutes, the department requested an Ambulance Task Force, two additional advanced life support units, and a Battalion Chief to run the scene, according to SJFD's own account posted to X. This represented a mass-casualty protocol, not a normal medical response.

Police told NBC Bay Area and ABC7 News that the hospitalizations stemmed from suspected alcohol intoxication and drug-related issues. No single cause has been confirmed, and no arrests were reported. Paramedics treated some attendees on-site at the five-acre park before ambulances hauled the rest away. By the time SJFD wrapped up around 10:34 p.m., roughly thirty minutes after the show's scheduled end, 14 people were in local hospitals. Their conditions haven't been made public.

The concert ran from 5 p.m. to 10 p.m. and was promoted by Insomniac and Midnite Events, with Don Diablo also on the bill. It's part of an ongoing Chainsmokers tour that saw the duo, Alex Pall and Drew Taggart, playing Encore Beach Club in Las Vegas the very next night, September 5, with an Austin City Limits date in October still on the books.

Less than a month earlier, a Chainsmokers set at Splash House's After Hours event at the Palm Springs Air Museum ended with a fight breaking out and bottles thrown into the crowd, according to TMZ. Nine people were injured; seven went to the hospital. Two shows, two mass-casualty scenes, same band, same summer.

The Chainsmokers have said nothing about either incident. They posted concert footage to Instagram on Sunday with zero mention of San Jose. Page Six reached out to the duo's representatives for comment and got no response.

Insomniac and other festival promoters routinely argue these incidents are a byproduct of large outdoor gatherings in warm weather, not evidence of an unsafe venue or lineup, and that harm-reduction infrastructure like water stations and medical tents is standard practice at major EDM shows. weraveyou, an electronic music outlet, framed the San Jose incident within that broader conversation about "harm reduction, on-site medical provision" at large events, and noted multi-agency response protocols "appear to have been in play throughout the San Jose show."

Fourteen ambulances responding fast and no deaths is evidence the emergency system worked. San Jose police assisted with traffic control and there's no indication the venue itself was unsafe.

But it raises an obvious question: why does this keep happening at Chainsmokers shows specifically? Two incidents in a matter of weeks, both involving crowds needing mass medical intervention, is a pattern, not bad luck. If police are right that alcohol and drugs are driving these hospitalizations, responsibility lies with the individuals who showed up impaired or made bad decisions once they got there. Nobody forced 14 people to over-drink or take something at an 18-and-over show.

At the same time, when a promoter and an artist keep drawing crowds that end up needing this level of emergency response, it's fair to ask whether venue capacity, alcohol sales policies, or on-site messaging need a second look. Insomniac has run large-scale events for years without this kind of headline. Two Chainsmokers shows producing double-digit hospitalizations in one summer is now something San Jose and Palm Springs authorities, and Insomniac itself, have to account for before the next date sells tickets.

No fatalities were reported in either incident. No charges have been filed against anyone connected to either show. Whether San Jose police or health officials plan any formal review of crowd safety protocols at Discovery Meadow hasn't been announced. The Chainsmokers' silence on both incidents, now going on several weeks for Palm Springs and two days for San Jose, remains the most conspicuous fact in the story.