Hello dear student
Greetings 
You want to serve patients for that you need to be a doctor, To be doctor you need to do mbbs for that you need to go through entrance examination like Neet , Aiims or Jipmer . If you qualify any one of these 3 exam you will get a seat in medical colleges and then complete your mbbs and there you go with your medical degree to serve patients.
thankyou
Please feel free to ask your further queries if any.