Congrats.
Now you have to start thinking about getting your green-card. All too often, physicians are so tied up in their residency that they forget about this detail. Remember 2 things: A. Only very very few fellowships sponsor H1b visas. B. You have 5 years until you must have a GC petition or labor cert cooking.
So, while 5 years seems a long time right now, once you are at the 4 year mark and no job in sight to file for you, people tend to get panicky.
I don't know what residency you are doing, but give the GC issue some thought early on. (easiest solution: get married

)