Medical and Police Verification in USA

Hi Has anyone done Police Clearance and Medical in USA, while being on temporary VISA. I need to get same done in India as well. Please advise.
I mean like medicals you can do anywhwere, i was resident of Germany but got my medicals in Russia. In terms of PCC - you need PCCs for each country you spent 12 months in.
Thanks.. is there a list of medical institutes, they are tied up and accept only those? I heard about it