Sidney Mark Cohen DDS 5 Old Mamaroneck Rd White Plains, New York, 10605 Phone: 914-946-5544 Company Name: Sidney Mark Cohen Dds Dentist Category: Cosmetic Dentistry and General-Family Dentistry Profile Let this business know you found them on Westchester Magazine's Online Directories. Locations White Plains 5 Old Mamaroneck Rd White Plains, New York 10605 Claim/Edit Listing