Online Registration System (ORS) is a framework to link various hospitals across the country for Aadhaar based online registration and appointment system, where counter based OPD registration and appointment system through Hospital Management Information System (HMIS) has been digitalized. The application has been hosted on the cloud services of NIC. Portal facilitates online appointments with various departments of different Hospitals using eKYC data of Aadhaar number, if patient's mobile number is registered with UIDAI. And in case mobile number is not registered with UIDAI it uses patient's name. New Patient will get appointment as well as Unique Health Identification (UHID) number. If Aadhaar number is already linked with UHID number, then appointment number will be given and UHID will remain same.