California Code, Welfare and Institutions Code - WIC § 5365.1

The conservatee or proposed conservatee may, upon advice of counsel, waive the presence at any hearing under this chapter of the physician or other professional person who recommended conservatorship pursuant to Section 5352 and of the physician providing evaluation or intensive treatment. In the event of such a waiver, such physician and professional persons shall not be required to be present at the hearing if it is stipulated that the recommendation and records of such physician or other professional person concerning the mental condition and treatment of the conservatee or proposed conservatee will be received in evidence.