N.Y. Comp. Codes R. & Regs. tit. 14, § 582.7
(b) The director and all staff physicians shall be currently registered and licensed to practice medicine in the State of New York; their qualifications shall be reported to the office at the time of their employment.
(1) The hospital shall not permit physicians in training to perform a service for which a license is required by the State of New York except as a part of an approved training program and unless authorized by a temporary certificate to practice medicine at the hospital and they are at the time under the direct control and supervision of a currently registered and licensed physician.