Welfare and Institutions Code section 5251

(a)

For a person to be certified under this article, a notice of certification shall be signed by two people.

(1)The first person shall be the professional person, or his or her designee, in charge of the agency or facility providing evaluation services. A designee of the professional person in charge of the agency or facility shall be a physician or a licensed psychologist who has a doctoral degree in psychology and at least five years of postgraduate experience in the diagnosis and treatment of emotional and mental disorders.

(2)

The second person shall be a physician or psychologist who participated in the evaluation. The physician shall be, if possible, a board certified psychiatrist. The psychologist shall be licensed and have at least five years of postgraduate experience in the diagnosis and treatment of emotional and mental disorders.

(b)

If the professional person in charge, or his or her designee, is the physician who performed the medical evaluation or a psychologist, the second person to sign may be another physician or psychologist unless one is not available, in which case a licensed clinical social worker, licensed marriage and family therapist, licensed professional clinical counselor, or registered nurse who participated in the evaluation shall sign the notice of certification.