Hurricane Ike may have barreled into Galveston as a Category 2 storm with 110 mph winds, but, hours after the storm's retreat, the city's largest health care provider reports treating just 16 patients for relatively minor injuries.

"We've had no serious injuries and some injuries weren't even hurricane-related," John Kolen, a spokesman for the University of Texas Medical Branch at Galveston, told FOXNews.com at about 6 p.m. CST.

"Some had cuts or broken bones, but no major trauma," he said.

About 23,000 or 40 percent of Galveston's 58,000 residents ignored a mandatory evacuation order and remained on the island.

The hospital, which was damaged by wind and rain, sustained some broken windows, roof damage and flooding. It is being powered by generators and is unable to admit patients at this time, Kolen said.

"We're only receiving patients for emergency treatment and then transferring them to other hospitals," he said.

UT Galveston evacuated all of patients ahead of the storm, but maintained a staff of 500 so that it could provide emergency treatment as needed.

Kolen said the medical campus weathered the storm well.

"All of the damage is relatively minor, considering the type of storm it was," he added.

Other buildings in the city did not fare as well.

Ten buildings burned to the ground and seven collapsed because of wind, the Houston Chronicle reported on its Web site. Two of the seven that collapsed were apartment buildings. Officials didn't know if anyone was inside.

Amazingly, the city had reported no casualties as of Saturday afternoon, according to the Chronicle. By mid-afternoon rescuers had searched 42 buildings and rescued 27 people who were taken to a city high school, which was being used as a shelter.

Click here to read more from the Houston Chronicle.

Elsewhere in Texas, one Houston hospital said it was without power but still able to care for patients.

"We are safe, and operating under our own power," said Gale Smith, a spokeswoman for The Methodist Hospital System in Houston.

There were some minor leaks around the building, she added, and a few windows popped open, "but, overall, things look good here at Methodist."

The hospital has about 700 patients in residence.

Over in Lake Charles, La., which is nearly three hours from Galveston, residents were also experiencing what Mayor Randy Roach called a "major flooding event."

Nonetheless, Christus St. Patrick Hospital still has to prepare for one of its busiest weeks ever, said Karen Stubblefield, the hospital's public information officer.

"Less than 50 percent of the community evacuated," Stubblefied said. "So the risk to hurt (yourself) outside is far greater. And we will take-in patients this week from hospitals who are less equipped than us. We are preparing for a really busy 48-hour to 7-day operation."

In Louisiana, Ike's storm surge inundated thousands of homes. In Plaquemines Parish, near New Orleans, a sheriff's spokesman said levees were overtopped and floodwaters were higher than either hurricane Katrina or Rita.

VIDEO: Click here to watch a video on evacuation necessities.

VIDEO: Click here to watch Dr. Manny Alvarez discuss how hospitals prepare for a storm.

FOXNewshealth.com's Jessica Doyle contributed to this report.