Contact DSI

DSI Mailing Address

PO Box 80133
Rancho Santa Margarita,
California 92688

DSI Phone Numbers

Toll Free (800) DSI-7175
Local (949) 502-0742
Fax (949) 502-0734

Send a Message

  • Thank you for your interest in DSI. Please feel free to contact us if you have any questions about Dependent Audits or would like more information regarding any of our services.