Withdrawal of Release of Information to Medical Board of California is a process by which a medical practitioner can opt out of providing certain medical information to the California Medical Board. This process ensures that a practitioner’s personal medical information is not released to the Board without the practitioner's express consent. There are two types of Withdrawal of Release of Information to Medical Board of California. The first type is known as the Voluntary Withdrawal of Release of Information and the second type is called the Mandatory Withdrawal of Release of Information. Voluntary Withdrawal of Release of Information is when a medical practitioner voluntarily chooses to opt out of providing certain medical information to the California Medical Board. This type of Withdrawal of Release of Information is usually done for privacy reasons. Mandatory Withdrawal of Release of Information is when a medical practitioner is required by law to opt out of providing certain medical information to the California Medical Board. This type of Withdrawal of Release of Information is usually done to protect the medical practitioner from any potential liability from the release of confidential information.