Sec. 12. This chapter does not prevent the attorney general from obtaining by subpoena as part of an investigation under IC 25-1-7 for a violation under IC 25-1-9:
(1) the application for privileges or employment completed by the professional staff member under investigation regardless of whether the member is the subject of peer review committee proceedings;
(2) except for reports prepared as part of a peer review investigation, incident reports prepared contemporaneously to document the circumstances of an accident or unusual occurrence involving a professional staff member regardless of whether the member is the subject of peer review committee proceedings; or
(3) information otherwise discoverable from original sources, that is not the communications to, records of, or determinations of a peer review committee;
from a professional health care provider.