Cal. Health & Safety Code § 1400
(b) It is unlawful for any person, association, or corporation to establish, conduct, or maintain a referral agency or to refer any person for remuneration to any person or agency outside a long-term health care facility, as defined in Section 1418, for professional services for which the long-term health care facility does not employ a qualified professional person to furnish a specific service, including, but not limited to, laboratory, diagnostic, or therapy services, unless the long-term health care facility complies with current federal and state laws regarding the provision of these services and all of the following conditions are met: