Any physician shall have the authority to disclose fully all medical treatment options to patients whether or not such treatment options are (i) experimental or covered services, (ii) services that the health insurer will not authorize, or (iii) the costs of the treatment will be borne by the health insurer or the patient to facilitate an informed decision by the patient, if the physician determines that such an option is in the best interest of the patient. Any physician who discloses information concerning other medical treatment options to a person with whom he has established a physician-patient relationship shall not be liable to any health insurer, in an action instituted solely on behalf of the health insurer, for any civil damages resulting from the disclosure of such information. This section shall not affect any cause of action a patient may have against a physician. For the purposes of this section, “medical treatment options” means any alternative or experimental therapeutic, psychiatric, medical treatment or procedure, health care service, drug, or remedy.