Takashi is a great restaurant in Manhattan that serves Korean and Japanese dishes. They have a number of paleo friendly dishes that you wont find from most other Asian restaurants in New York. You can buy some great tasting grass-fed beef offal. Most of the beef you will find in New York is clearly factory farmed and certainly not organic.
Try this great restaurant if you want some more organic, grass-fed beef when you stop in Manhattan. They received a great review in the New York Times and many paleos claim that they love this place as well.