N.Y. WKC Law § 351

§ 351. Preferred provider organizations; contracts. The state\ninsurance fund, any stock corporation, mutual corporation or reciprocal\ninsurer authorized to transact the business of workers' compensation\ninsurance in this state or self-insurer may contract with a preferred\nprovider organization to deliver all medical services mandated by this\nchapter, provided such contract takes effect on or after January first,\nnineteen hundred ninety-seven and the insurer or the employer has no\nfinancial interest in the preferred provider organization. Where there\nis a duty to collectively bargain, an employer shall collectively\nbargain the use and implementation of a preferred provider organization\nwith the authorized collective bargaining agent of its employees.\n