(a) Once each year during the first seven years following disability retirement the Retirement Board may require any disability beneficiary who has not yet attained normal retirement age to undergo a medical examination by the Board of Medical Examiners. Based upon the health status, training, education, background, and job availability, the Retirement Board may reduce the disability benefit or stop it entirely.

(b) No disability pension shall be granted hereunder, in any case, without a report from the Board of Medical Examiners.