N.Y. Comp. Codes R. & Regs. tit. 18, § 360-10.7
(b) If the MMCO has elected to restrict PCP changes, or an enrollee has been restricted pursuant to section 360-6.4 of this Part or the MMCO’s recipient restriction program, an enrollee nevertheless has good cause to change PCPs at any time if:
(1) the provider has failed to furnish accessible and appropriate medical care, services or supplies to which the enrollee is entitled under the terms of the contract under which the MMCO has agreed to provide services. This includes, but is not limited to, the failure to:
(5) there is a change in the provider's practice, including but not limited to the following:
(8) the provider leaves the MMCO's network.
(c) Requests to change PCPs.