Most likley no. In order to get licensed and practice in the US, you would need to pass all parts of the USMLE and an english language test. You can get a medical license in most states after 1 year of residency, but you would then only be a general practicioner, no board certification and only primary care type medicine. While no one is actively watching whether or not you are practicing urology, no hospital or surgery center in their right mind would ever give you priviledges to practice urology and you certainly would never get any malpractice coverage. But you could write scripts for proscar and stuff like that. To practice urology you would need to repeat residency training. There only practicing urologists I know who did not repeat residency are those that have been here for 30+ years or people who came to the US for fellowships, but they were trained in Canadian residencies which are accepted in some states.