I am a graduate medical doctor and i was working in my country as a doctor at a hospital and I am not affiliated to any organization or university in my country. I got B1 visa to take USMLE exams -( American medical license exam ). I was lucky to find a research position in a Cancer research center although I don't have a J1 visa. I would like to change my B1 visa to research J1 visa to be a accepted into post graduate program.
would you please give me advice that if it is possible to change my visa status without affiliation to my home-university ?