Cal. Health & Safety Code § 1797.214

A local EMS agency may require additional training or qualifications, for the use of drugs, devices, or skills in either the standard scope of practice or a local EMS agency optional scope of practice, which are greater than those provided in this chapter as a condition precedent for practice within such EMS area in an advanced life support or limited advanced life support prehospital care system consistent with standards adopted pursuant to this division.