Richard Mark Plotzker MD became an Endocrinology, Diabetes, & Metabolism doctor in 1977. Male doctor. Specialty Dr. Plotzker specializes in the following: Endocrinology, Diabetes, & Metabolism Location New Castle 109 Weldin Bldg Rd 3411 Silverside Rd Wilmington DEĀ  19810 phone: 302-478-6525 fax: 302-478-6530 email: website: www.drplotzker.yourmd.com Education Dr. Plotzker was educated at the following institutions: