Since this question comes up often. I found the following web site at the DR Superintendent of Banks:
http://www.supbanco.gov.do/entidades/datos/index.html
Go to the bottom of the page and click "Agentes de Cambio". This lists names,numbers, location of dozens of exchange houses.
http://www.supbanco.gov.do/entidades/datos/index.html
Go to the bottom of the page and click "Agentes de Cambio". This lists names,numbers, location of dozens of exchange houses.