hi,

see after completing diploma you can do degree courses or join in internship program related with hospital management, some of the course you may interested for,

Bachelor of Hotel Management (BHM)

Bachelor in Hotel Management and Catering Technology (BHMCT)

BA in Hotel Management.

BBA in Hospitality, travel & tourism.

also diploma degree in accepted in singapore, new zealand where you may get internship along with pursuing your course.