I did not check New York. Yes, she is licensed to practice there.
However, a physician must be licensed in each state that they practice. Teaching is not considered practicing unless it is in a clinical setting.
I know several MD’s who are clinical faculty in North Carolina medical schools and live in Massachusetts.
The exception to being licensed in each state is if you are working for the US Government, then you must be licensed in one of the states, not necessarily the one where you are practicing.