N.Y. Comp. Codes R. & Regs. tit. 14, § 635-11.5
(c) In all other situations, or if any party specified in subdivisions (a)-(c) of this section who would otherwise enroll the person or act in the FIDA-IDD review process is unwilling or unavailable, any of the following parties, in the order stated, may enroll the person, act in the FIDA-IDD review process or appoint another party to act in the FIDA-IDD review process:
(d) In all other situations, the person may be enrolled by the CEO (or designee) of the agency providing service coordination for the person. The CEO or designee may also enroll the person or act in the FIDA-IDD review process when any party specified in subdivisions (a)-(c) of this section who would otherwise enroll or act in the FIDA-IDD review process is unwilling or unavailable. If that CEO enrolls the person in the FIDA-IDD plan or acts in the FIDA-IDD review process, he or she shall give written notice of such enrollment and/or action to: