Perkins, Dexter, Sinopoli & Hamm, P.C. Share: Finance - Accounting Perkins, Dexter, Sinopoli & Hamm, P.C. Visit Website 501 W Pres. George Bush Tpke. Ste. 130 Richardson, TX 75080 (972) 669-9730 (972) 238-1286 (fax)