Ilona Gont 777 Old Saw Mill River Rd Tarrytown, New York, 10591 Phone: 914-847-1304 Company Name: Regeneron Pharmaceuticals Inc Lawyer Category: Intellectual Property Profile Let this business know you found them on Westchester Magazine's Online Directories. Locations Tarrytown 777 Old Saw Mill River Rd Tarrytown, New York 10591 Claim/Edit Listing