In 1988 a group of innovative California hospital executives banded together to form a member-owned professional liability insurance company. Since then, California Healthcare Insurance Company, Inc., a Risk Retention Group (CHI) has emerged as the longest continually-operating professional liability insurance carrier in California. Optima Healthcare Insurance Services is a wholly-owned subsidiary of CHI and acts as the management company for CHI as well as a multi-line property/casualty commercial insurance broker.