23. The Government, or any agency authorised by the Government in this behalf, may maintain separate Registers to register names of medical practitioners and dentists possessing such medical qualifications and dental qualifications from such date as the Government may, by notification in the official Gazette, specify; and the Council shall, from the date specified in the notification, refrain from registering the medical practitioners and the dentists possessing such medical and dental qualifications as have been specified in the notification.