(b) Identification by dentist; crime committed against patient under sixteen. A dentist shall be required to disclose information necessary for identification of a patient. A physician, dentist, podiatrist, chiropractor or nurse shall be required to disclose information indicating that a patient who is under the age of sixteen years has been the victim of a crime.

(c) Mental or physical condition of deceased patient. A physician or nurse shall be required to disclose any information as to the mental or physical condition of a deceased patient privileged under subdivision (a), except information which would tend to disgrace the memory of the decedent, either in the absence of an objection by a party to the litigation or when the privilege has been waived: 1. by the personal representative, or the surviving spouse, or the next of kin of the decedent; or 2. in any litigation where the interests of the personal representative are deemed by the trial judge to be adverse to those of the estate of the decedent, by any party in interest; or 3. if the validity of the will of the decedent is in question, by the executor named in the will, or the surviving spouse or any heir-at-law or any of the next kin or any other party in interest.

(d) Proof of negligence; unauthorized practice of medicine. In any action for damages for personal injuries or death against a person not authorized to practice medicine under article 131 of the education law for any act or acts constituting the practice of medicine, when such act or acts were a competent producing proximate or contributing cause of such injuries or death, the fact that such person practiced medicine without being so authorized shall be deemed prima facie evidence of negligence.