Hi. My name is Artem. I have experience in C#, WPF, and Server technologies. I have do similar project with face recognition for one of my client(system for sport club).
I can do this project for you. I can do project with local database. In this case app will run only in one PC and all data will be saved in local database. And I can create Client-Server app. In this case you must install WindowsServer and SQL server database, and then run server side app. Many Client app will connect to server and can save(add new patient, change info about patient ect.) and receive data from database(login into system, get info about patient ect.) If you interesting, we can discuss all app features in skype or use freelancer chat.
Thanks and hope for our cooperation.
Best regards.