I met Randy Linthicum at Operation Sunrise -- he was demonstrating an online system which registers licensed health professionals to be called upon during a disaster/emergency.
While CERT volunteers should proactively locate medical resources within their neighborhoods, this system effectively and officially manages the database.
Please go to:
https://medicalvolunteer.ca.gov/If you're a licensed health professional with an active license, or a member of a medical disaster response team in California who would like to volunteer for disaster service, you've come to the right place! The California Medical Volunteer Site is your secure, confidential site to register with the State of California for volunteer emergency/disaster service. During the on-line registration process, you will be asked to enter information regarding your license (if applicable), the best way to contact you, and other relevant background information. (If you have already completed the registration process or wish to return to a registration which you've started but not completed, you can log in and update your profile.)
The main web-site for Emergency Medical Services Authority (State of California) is:
http://www.emsa.ca.gov/