David Thien Shing Chia MD 777 N Broadway Ste 305 Westchester Gastroentrology Associates Tarrytown, New York, Phone: 914-366-6120 Doctor Category: Internal Medicine Profile Let this business know you found them on Westchester Magazine's Online Directories. Locations Tarrytown 777 N Broadway Ste 305 Westchester Gastroentrology Associates Tarrytown, New York 10591-1000 Claim/Edit Listing