Who Regulates Health Insurance In California? 
The California Department of Insurance -LRB- aka the California Insurance Commissioner 's Office -RRB- . If you are having problems with an insurer you can contact the department at 800-927-4357 if you are within the state of California or 213-897-8921 if you are outside of the state of California . You can also use their contact form , which can be found here : WEBSITELINK 