MDxpress 1030 W. Boston Post Road, Mamaroneck, NY10543 MDxpress is a state-of-the-art urgent care center founded and run by a team of board-certified emergency room doctors…More from one of New York’s top hospitals. Our team of doctors have trained and worked together for many years and have now brought their expertise and care to Westchester. Adults and pediatrics welcome. We have an onsite laboratory and xrays. MDxpress… caring for your entire family.