In no event shall the disability pension be less than one-sixtieth of the member's final average salary multiplied by the number of years of total service, not to exceed twenty, which would have been credited to the member had he remained in service until age sixty; provided, however, that for members who are credited with service prior to July first, nineteen hundred fifty-nine, the minimum pension as so determined shall be reduced by one quarter of one per cent of final average salary multiplied by the number of his years of service prior to July first, nineteen hundred fifty-nine.
On retirement for disability, in addition to the pension hereinabove provided, a member shall receive an annuity which shall be the actuarial equivalent of his accumulated contributions at the time of his retirement.
On and after July first, nineteen hundred seventy-seven, a member who is age fifty-five or over and who otherwise meets the requirements of this subdivision, shall receive on retirement for disability the retirement allowance he would have received had he filed for a service retirement.
On or after October sixteenth, nineteen hundred ninety-two, the disability pension shall in no event be less than:
Notwithstanding anything to the contrary in this article, any member who shall receive a disability retirement allowance pursuant to this subdivision shall be required once each year or at such other interval as the retirement board may determine to undergo a medical examination by a physician or physicians designated by the retirement board. Should any disability beneficiary refuse to submit to a medical examination, his retirement allowance shall be discontinued until his withdrawal of such refusal, and should refusal continue for one year all rights in and to his pension shall be forfeited.
In the case of persons who last became members on or after July first, nineteen hundred seventy-three, the provisions of this subdivision shall apply only until July first, nineteen hundred seventy-four.
N.Y. Educ. Law § 511