(a) The board shall maintain a file on each complaint filed with the board. The file must include:
(1) the name of the person who filed the complaint;
(2) the date the complaint was received by the board;
(3) the subject matter of the complaint;
(4) the name of each person contacted in relation to the complaint;
(5) a summary of the results of the review or investigation of the complaint; and
(6) an explanation of the reason the file was closed, if the board closed the file without taking action other than to investigate the complaint.
(b) The board, at least quarterly until final disposition of the complaint, shall notify the person filing the complaint and each person who is a subject of the complaint of the status of the investigation unless the notice would jeopardize an undercover investigation.