Hey Raja

You need to have excellent score in your Post Graduation for better chances. And it would be better if you get some on field experience of a Neurosurgeon in a clinic or hospital.  Once you get a good amount of experience, regarding working of a medical institute and aspects of your field, then you can gather a team of worthy doctors and surgeon and start focusing on your Multi Specialty Hospital, for which necessary requirement are:

• A land for the hospital
• Doctors, Nurses and Staff
• Permission from the Government
• Financial Strength
• Medical Equipment and Facilities

It is a long process and for that you should consult a professional or a firm that will help you in all the processes and guide you for the same.

All the best