(a) Except as provided in sections 52-146c to 52-146j, inclusive, sections 52-146p, 52-146q and 52-146s, and subsection (b) of this section, in any civil action or any proceeding preliminary thereto or in any probate, legislative or administrative proceeding, a physician or surgeon, licensed pursuant to § 20-9, or other licensed health care provider, shall not disclose (1) any communication made to him or her by, or any information obtained by him or her from, a patient or the conservator or guardian of a patient with respect to any actual or supposed physical or mental disease or disorder, or (2) any information obtained by personal examination of a patient, unless the patient or that patient’s authorized representative explicitly consents to such disclosure.

(b) Consent of the patient or the patient’s authorized representative shall not be required for the disclosure of such communication or information (1) pursuant to any statute or regulation of any state agency or the rules of court, (2) by a physician, surgeon or other licensed health care provider against whom a claim has been made, or there is a reasonable belief will be made, in such action or proceeding, to the physician’s, surgeon’s or other licensed health care provider’s attorney or professional liability insurer or such insurer’s agent for use in the defense of such action or proceeding, (3) to the Commissioner of Public Health for records of a patient of a physician, surgeon or health care provider in connection with an investigation of a complaint, if such records are related to the complaint, or (4) if child abuse, abuse of an elderly individual, abuse of an individual who is physically disabled or incompetent or abuse of an individual with intellectual disability is known or in good faith suspected.