(a) Notwithstanding the provisions of Section 650 or any other provision of law, it shall not be unlawful for a person licensed pursuant to the Chiropractic Act, or any other person, to participate in or operate a group advertising and referral service for chiropractors if all of the following conditions are met:

1. (1) Patient referrals by the service are the result of patient initiated responses to service advertising.
2. (2) The service advertises, if at all, in conformity with Section 651.
3. (3) The service does not employ a solicitor.
4. (4) The service does not impose a fee on the member chiropractors that is dependent upon the number of referrals or amount of professional fees paid by the patient to the chiropractor.
5. (5) Participating chiropractors charge no more than their usual and customary fees to any patient referred.
6. (6) The service registers with the State Board of Chiropractic Examiners, providing its name and address.
7. (7) The service files with the State Board of Chiropractic Examiners a copy of the standard form contract that regulates its relationship with member chiropractors, which contract shall be confidential and not open to public inspection.
8. (8) If more than 50 percent of its referrals are made to one individual, association, partnership, corporation, or group of three or more chiropractors, the service discloses that fact in all public communications, including, but not limited to, communication by means of television, radio, motion picture, newspaper, book, or list or directory of healing arts practitioners.