UMID is a unique identity card for railway employees, pensioners, and their dependents to access free treatment at railway hospitals and AIIMS. Learn how to register, apply, and use UMID card for health benefits. Coordination Clerk. UMID portal for Indian Railways employees and pensioners to manage user registrations, applications, and administrative tasks efficiently. UMID is a smart health card system in Indian Railways. It helps in providing Unique Identity to all medical beneficiaries individually through a unique number as a perpetual entity.