Completing the USCIS-mandated medical examination by an authorized Civil Surgeon is a required step in the Green Card application process.
The medical examination ensures that Green Card applicants meet the required health standards and do not have any communicable diseases that could potentially pose a public health threat. Applicants have the option of including the medical examination report at the time of filing the Green Card or they can provide it once USCIS issues a Request for Evidence for the medical report. It should be noted that including the medical report with the Green Card application can save some processing time.
Green Card applicants in the U.S. can use the USCIS 'Find a Civil Surgeon' tool to locate USCIS approved Civil Surgeons in their area by entering their zipcode. Once an appointment has been scheduled, applicants should check with the doctor’s office to confirm which documents are needed for the medical exam.
The medical examination includes a range of medical tests, physical examination, verification of vaccinations, and screening for specific diseases. After completing the medical examination, the Civil Surgeon will complete and sign the USCIS medical form and provide a sealed envelope with the completed form and report to be sent to USCIS.
You can find more information on USCIS requirements for the medical examination here.