Wildfires in Southern California have killed at least 25 people and destroyed at least 12,000 structures since they began burning January 7. Still, area health systems have largely remained operational.

Here's how the wildfires have affected health care operations, employees and priorities in Southern California:

UCLA Health's Family Medicine clinic in Pacific Palisades was destroyed in the fire, Phil Hampton, the health system's senior director of communications, told Newsweek on January 14. The health system is contacting the clinic's patients to offer appointments at other locations or virtual visits.

In addition to the family medicine clinic, a small number of UCLA's 280 community clinics temporarily closed -- mainly because of public safety utility shutdowns and proximity to evacuation zones, according to Hampton. Some have reopened in recent days, but as of Tuesday evening, clinic operations were still impacted in Calabasas, Malibu and Pacific Palisades.

Fortunately, all UCLA Health hospitals are outside of evacuation warning zones and have remained open and operational. Surgery and procedure scheduling processes have not changed, Hampton said.

Cedars-Sinai has reopened the majority of outpatient offices and surgery centers that temporarily closed and resumed a full surgical schedule, the system reported. However, some locations in Altadena remain closed, and health care professionals in the Brentwood/West L.A. office are currently seeing patients virtually, according to the health system's most recent update on Thursday.

AltaMed Health Services' Pasadena medical center was destroyed by the Eaton fire, the health system shared in a January 8 X post. Everyone was safely evacuated, according to the post. AltaMed's website shows that three medical group locations are temporarily closed in addition to the Pasadena medical center.

All Kaiser Permanente facilities remain fully operational, the health system told Newsweek in a statement on Tuesday.

MemorialCare -- which operates its nearest facility about 30 miles from the affected area -- and Scripps Health -- which is more than 100 miles south of Los Angeles County -- both told Newsweek they are continuously monitoring conditions but have not closed any facilities.

"Our decisions are based on guidance from local emergency services, and we are always prioritizing the safety of patients and staff," Richele Steele, vice president of communications and public relations at MemorialCare, told Newsweek. "We have contingency plans in place should the need arise."

The health systems that spoke with Newsweek said staffing protocols have not been affected.

A Scripps Health spokesperson noted that one employee lives in the area impacted by the wildfires, and the health system is in contact with them. Scripps has also started a fund to assist employees' family members who lost their homes.

"Our hearts go out to everyone in our communities who have been affected, including our own staff and their families," Kaiser Permanente said in a statement shared with Newsweek. "We are grateful to our dedicated employees and physicians who continue to work tirelessly to care for our members, even as some of them are personally impacted by the fires."

UCLA Health has treated about 60 patients with fire-related injuries, Hampton said Tuesday: "The vast majority were treated and released."

Some health systems are expanding access to their services amidst the crisis. Kaiser Permanente is extending mental health resources to its members and others affected by the fires. Clinicians from other markets have volunteered to help, according to the system's statement.

Cedars-Sinai is offering 24/7 virtual care to all residents. MemorialCare is also offering telehealth services and working closely with the Disaster Response Collaborative to provide additional support as needed, according to Steele.

Kaiser Permanente has worked with Pasadena's Public Health Department to set up a health care clinic at the evacuation center at Pasadena Civic Auditorium. The clinic is open 24 hours a day and includes Kaiser Permanente medical staff such as doctors, nurses, pharmacists and mental health professionals.

The clinic offers prescription refill coordination, injury care, mental health care and routine health screenings. It is also providing community members with free over-the-counter products, eyeglasses, hearing aids and similar supplies as needed.

In addition, a Kaiser mobile health vehicle is parked at the Westwood Recreation Center from 10 a.m. to 5 p.m. daily with a primary care physician and pediatrician.

Kaiser has turned its Walnut Center into a respite center for volunteers and first responders, including rest areas, meals, internet, minor injury care and playrooms for children.

Adventist Health is organizing supply donations in partnership with the Southern California Conference of Seventh-day Adventists, according to a Thursday news release from the health system. Five trucks full of donations -- including air purifiers, N95 masks and Vitamin Water -- have been transported from Sacramento to Glendale. The health system expects more supplies to arrive later in the week and is working with the church to support a medical village that will provide care over the next nine to 12 months.

Adventist Health has also provided 10 apartments for people who have evacuated from their homes, furnished by the disaster relief nonprofit World Vision.