N.Y. Retire. & Soc. Sec. Law § 410-A
Notwithstanding anything to the contrary contained in section four hundred ten of this act, the comptroller is hereby authorized to deduct from the retirement allowance of any retired member, such amount as the retired member may specify in writing filed with the comptroller for the payment of any insurance premiums written on the group plan, covering only such insurance in which the employer as defined in section three hundred two of this article contributes, and to transmit the sums so deducted to the company carrying such insurance or its authorized representative. The comptroller is further authorized to deduct from the retirement allowance of any retired member such amount as the retired member may specify in writing filed with the comptroller for the payment of any insurance premiums due for medicare, and to transmit the sums so deducted to the agency for the federal government authorized to administer the medicare program. Any such written authorization may be withdrawn by such retired member at any time upon filing notice of such withdrawal with the comptroller.
N.Y. Retire. and Soc. Sec. Law § 410-A