No agency shall disclose personal data to any person or other entity unless such disclosure is authorized by state or federal statute or regulation or is approved by the holding agency and by the data subject whose personal data is sought or an authorized representative of the data subject. Medical or psychiatric data may be disclosed to a physician, treating a data subject, upon the request of said physician, if a medical or psychiatric emergency arises which precludes the data subject's giving approval for such disclosure; provided, however, that the agency shall give notice of the fact of such disclosure to the data subject upon termination of the emergency.
950 CMR, § 33.13