California Code, Welfare and Institutions Code - WIC § 4435

(a) It is the intent of the Legislature to advance regional center service provision that is person centered and more uniform, consistent, and equitable, while enhancing the experiences of individuals and families.  It is the further intent of the Legislature that the department shall, consistent with these equity goals, have the authority under this division to oversee and monitor the manner in which regional centers provide services pursuant to the Lanterman Developmental Disabilities Services Act (Division 4.5 (commencing with Section 4500)).

(b) Written directives issued by the department shall be consistent with the Lanterman Developmental Disabilities Services Act, and shall not interfere with the discretion of the individual program planning team to determine the needs and services appropriate for each person with a developmental disability who is entitled to services under the Lanterman Developmental Disabilities Services Act.