(a) The confidential relations and communications between a physician or surgeon licensed under provisions of RSA Chapter 329 and his or her patient are placed on the same basis as those provided by law between attorney and client, and, except as otherwise provided by law, no such physician or surgeon shall be required to disclose such privileged communications. Confidential relations and communications between a patient and any person working under the supervision of a physician or surgeon that are customary and necessary for diagnosis and treatment are privileged to the same extent as though those relations or communications were with such supervising physician or surgeon.
(b) The confidential relations and communications between a psychologist or pastoral counselor certifi