Al Madina Mosque (Islamic Center of Brooklyn)

Great mosque, is local, and has an Imam. There are no classes offered at this mosque. Friday prayer (Jumah) is read, and coming by to check prayer times firsthand might be appropriate.
There's no person supervising the mosque, so no number or email that can be called. Mostly local people that help to keep it clean and tidy. Easy, diversified convenient, and friendly behavior.