Patient browse (search) is the key element for any EMR / PMS Software. In my past 15 years experience, i involved more than 5 times in design/development (using VB6, VB.NET) / test the Patient demographics search and patient demographics page.
Here is the excellent UI which shows how to design patient search window
Patient Search window
or you can see the screen shot here
Here is the excellent UI which shows how to design patient search window
Patient Search window
or you can see the screen shot here