Sec. 6.06. APPLICATION; PHYSICIAN'S STATEMENT; MEDICAL BOARD ACTION. (a) An application for disability retirement must be accompanied by a written statement, on a form approved by the board of trustees, signed by a physician of the member's choice. The member shall pay any costs of or fees for obtaining the physician's statement and shall file the application and statement with the fund. As soon as possible after the application is filed, the medical board shall evaluate the medical and other pertinent information concerning the member's application.

(b) The medical board may require any firefighter to obtain additional medical opinions before issuing a certificate that the member is unable, as a result of physical or mental disability, to perform the duties of the member's occupation as a firefighter. The fund shall pay any costs or fees of examination by a person other than the member's own physician.

(c) A certificate from the medical board may include a finding by that board that the disability is likely to be temporary or is likely to be total and permanent.

(d) The board of trustees at any time may require a person receiving a disability retirement benefit under this Act to appear and undergo a medical examination by a physician selected by the board of trustees or the medical board for that purpose. The result of the examination and report by that physician shall be considered by the board of trustees in determining whether the disability retirement benefit will be continued, increased, if less than the maximum provided by this Act, decreased, or discontinued.