1. Each recipient of a disability retirement allowance shall provide to the System a copy of the recipient’s federal income tax return and withholding statements for all income for the preceding calendar year by May 1 of each year.
2. The Board may adopt regulations to require medical examinations of recipients of disability retirement allowances. Expenses for such medical examinations must be paid from the Public Employees’ Retirement Administrative Fund. If any member receiving such benefits refuses a reasonable request from the Board to submit to a medical examination, the Board may discontinue the payment of the member’s benefits and may provide for the forfeiture of all the member’s benefits which accrue during the discontinuance.