Moovit is a great phone application that can help you find the best route to take to reach your destination.
You can download the app here: https://moovit.com/
Information for the use of public transportation
From Penn Station
The NYU Langone Medical Center is directly across town from Penn Station on the West Side. Take the M34 bus on 34th St. going east to its final stop.
You can also walk east across town along 33rd Street. Taxis may deposit passengers at the main lobby entrance on First Avenue.
Coming from downtown, the M15 bus runs the length of First Avenue in Manhattan and stops at 32nd Street and First Avenue. Coming from uptown, the M15 bus runs along Second Avenue and stops at 34th and 2nd.
The M34 bus runs the length of 34th Street in Manhattan and stops directly in front of the north entrance to NYU Langone Medical Center on 34th Street, East of First Avenue. The M16 bus directly connects nationwide bus service at the Port Authority Bus Terminal (42nd Street and 8th Avenue) with the NYU Langone Medical Center 34th Street entrance bus stop. Bus fare is $2.75. A MetroCard or coins are required.
The subway costs $2.75 and you must purchase a MetroCard. The stops closest to the NYU Langone Medical Center are:
33rd Street stop (at Park Avenue) on the Number 6 line.
Grand Central Terminal at 42nd Street between Lexington Avenue and Park Avenue (4,5,6).
You can download and print the NYC subway map at this link: http://web.mta.info/nyct/maps/subwaymap.pdf