The department is authorized to conduct investigations and take disciplinary actions as set forth in § 19a-17 for any of the following reasons: (1) Fraud or material deception in procuring or attempting to procure licensure; (2) illegal conduct, incompetence or negligence in carrying out professional functions; (3) any occupationally disabling emotional disorder or mental illness; (4) physical illness including, but not limited to, deterioration through the aging process; (5) abuse or excessive use of drugs, including alcohol, narcotics or chemicals; (6) fraud or material deception in the course of professional activities; (7) wilful and significant falsification of entries in any hospital, patient or other record; and (8) violation of any provision of this chapter, any regulation adopted pursuant to this chapter, or any provisions of subdivision (6) of subsection (a) of § 19a-14. The commissioner may order a license holder to submit to a reasonable physical or mental examination if his physical or mental capacity to practice safely is the subject of an investigation. The commissioner may petition the superior court for the judicial district of Hartford to enforce such order or any action taken pursuant to § 19a-17.