NY is DO friendly, and depending on your future specialty (board scores etc.) a residency should not be a problem. As for Westchester County, once you complete your training DO behind your name will not limit your employment opportunities. One of the largest medical groups in the County has plenty of DO internist, family medicine docs and other (DO) specialist. Just to let you know NYCOM has matched several students at WMC for OB/GYN, internal medicine, anesthesia, peds and psych. Good luck.