Shaare Hatikvah
I'm told this was the first Minhag Ashkenaz Shul in Washington Heights. Still going.
"Congregation Shaare Hatikvah – Ahavath Torah v'Tikvoh Chadoshoh is an Orthodox Synagogue founded in 1935 and located in Washington Heights, Upper Manhattan, by German-Jewish refugees"
Also from the website
"Our weekday morning minyan each day at 6:45 AM has successfully taken off. We are steps away from the bus station, subways, and the M98 bus. There's also lots of free street parking available. Check out our For Commuters Page for details."