Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Susan Byrne Horwitz, Practice Areas No known practice areas. is located in the city of San Mateo, the state of California. Attorney legal address 225 Castilian WaySan Mateo, CA, 94402. For more information, please call (415) 343-7040 Your comments* (not for publishing) * — Required information Susan Byrne Horwitz ← View details 225 Castilian WaySan Mateo, CA, 94402, San Mateo, California (415) 343-7040