From Govtech: California Wildfires, Power Outages Are Disrupting Health Care
Across California, wildfires and outages have forced health-care providers to close hospitals and medical clinics, or greatly limit services. Both Kaiser Permanente and Sutter Health evacuated their Santa Rosa hospitals.

Another concern is that of people with health and disabilities.  See: Disabled seniors in Ca. complex left behind during outage.  Thanks to Chris Jones for this citation.