Northside Deli Address: 331 Route 25a, Mount Sinai, NY 11766 Phone: (631) 928-8511 Nice to Know: Good For Kids Yes Noise Level Average Wifi No Accepts Credit Cards Yes Good For Groups Yes Wheelchair Accessible Yes Delicatessens Other Businesses: Mount Sinai Heritage Diner at 275 Route 25A, Mount Sinai, NY 11766 Amici at 304 Route 25A, Mount Sinai, NY 11766 Bench Warmer's Tavern Grill at 23 Route 25a, Mount Sinai, NY 11766