Hi

In order for you get the post of government medical officer you need to pass the UPSC combined medical service examination. Eligibility criteria to seat for the exam is that the candidate must pass with 50% marks in Bachelor of medicine or MISS, BHMS, BDS etc and the aspirant should be between 21 to 32 years of age.

After your bhms you can seat for UPSC combined medical service examination and try to become medical officer

For more details:

https://competition.careers360.com/exams/upsc-cms

Hope this helps