N.Y. Comp. Codes R. & Regs. tit. 10, § 80.75
(c) Official New York prescription forms are available for use by institutional dispensers. Institutional dispensers shall register with the department to be issued official prescriptions.
(e) Interns or residents are required to use the Drug Enforcement Administration registration number of the institution and the code number assigned by the institution for such purpose. Any practitioner who is an intern, resident or foreign physician may dispense and prescribe controlled substances under the registration of the hospital or other institution which is registered and by whom the physician is employed, provided that:
(f) It is the responsibility of the dispensing institution to obtain all official prescriptions for outpatient use and to assign such prescriptions to staff practitioners and interns and to insure the security of all such official prescriptions. Institutions obtaining official New York State prescriptions shall establish a system of control and security which will include the following: