After the medical exam is complete, the Panel Physician (if you are abroad) or the Civil Surgeon (if you are in the U.S.) will certify the results on the appropriate forms and place them in a sealed envelope. Do not open the sealed envelope. Turn in your envelope with your immigration application.
Immigration medical exams are given by licensed and experienced doctors, called Civil Surgeons (in the U.S.) and Panel Physicians (outside of the U.S.). Doctors who qualify as Civil Surgeons or Panel Physicians receive special and on-going immigration oriented medical training and policy updates.
Note: A medical exam performed by a doctor not approved by the USCIS will not be recognized.