Apart from the openings listed before ( for hospital Administration) as health managers there are openings in various NGOs and programs like NACO, NRHM etc. Also there are international openings in UN organisations like WHO and UN funded agencies. However, for such organisations, a strong CV in terms of work ex, research experience, internships and projects plays a major role.
Research project which is an essential part of MHA (Health) creates research level oppurtunities in various areas like health financing, epidemiology, human resource in health care etc.
In the end I would like to add that apart from career oppurtunities the course offers you, your interest should be a major factor in deciding which stream you finally choose
Wish you all, best of luck for the written exam results and forthcoming rounds of GD/PI.