Which option has better career prospects: Engineering or Doctor?

Well Rohit it entirely depends on your interest. And why did you post this in Design? Wish you the best for your career. Remember, your Career is a resultant of your knowledge combined with your passion and expression ability. If you like this answer you may select it as best answer or press like

Rohit, you cannnot say which is better between an Apple and an Orange. Same here. Both engg and medicine are good and it would depend upon your personal liking to make any of it a real success for you. Judge your thoughts by your way of life, your nature, your sensitiveness, your creative instincts

It depends on your interest. Both fields have immense growth opportunities for a talented individual. If you are asking from income point of view then a talented doctor has slight advantage over a talented engineer. If want good money + time for your family + time for yourself then go with engineer