After responding to three calls about patients there in distress, firefighters went through the facility early Wednesday and found three people dead and evacuated 145 patients to hospitals, many on stretchers or in wheelchairs, authorities said.
A criminal investigation into the deaths has now been launched, and Carballo said the nursing home is cooperating with authorities.
Hollywood police later tweeted that they had evacuated 158 patients to local hospitals.
After Hurricane Irma passed through Florida, 4.4 million FPL customers were without power.
Through a representative, Carballo told the SunSentinel newspaper that the home has a backup generator but that it does not power the air conditioning. Anitere Flores said on Tuesday's conference call.
"We are on emergency power, we have temporary cooling inside, but obviously it's been enough days we haven't been able to get up", said Ralph Marrinson, owner of Williamsburg Landing Assisted Living Facility.
"The industry's Irma response is one of the largest and most complex power restoration efforts in USA history", said Tom Kuhn of the Edison Electric Institute, a lobbying group that represents all US investor-owned electric companies. "I would be remiss if i didn't say our deepest sympathies goes out to the families of those (who) lost their lives", Gould said.
Florida Gov. Rick Scott announced Thursday night that he directed the Agency for Health Care Administration to terminate the Hollywood Hills center as a provider for Medicaid, which helps low-income people receive health care.
In remarks to Fox News' "America's News Headquarters" show, Bondi said the Broward County State Attorney's Office "are all over" the investigation into the troubling deaths amid widespread power outages.
Mr. Trump was scheduled on Thursday to fly first to Fort Myers, Florida, and then to Naples, where he will visit some of the areas damaged by Irma.
At Century Village in Pembroke Pines, more than half of the residential buildings 77 of 144 were still without power Wednesday afternoon.
People who fled their homes in hard-hit islands including St. Martin and the U.S. Virgin Islands that were all but cut off from the world for days arrived in San Juan late Tuesday.
Some were frustrated, just like resident Amber Roelos who said earlier in the week after sleeping in her auto for 54 hours, "I'm pregnant". Memorial Regional is located across the street from the nursing home.
Officials were investigating a number of deaths believed to be related to the storm, though it was not clear whether Irma was directly responsible in every case. The staff used fans, put cold towels and ice on patients and gave them cold drinks, he said.
While sheltering in place can be preferable at times, she said, doing so requires planning to survive the aftermath. "Someone let the ball drop very, very far", Kenneth Nova said by phone from his home in Winter Haven.
Older people can be more susceptible to heat because their bodies do not adjust to temperatures as well as those of younger people.