We are located on Dobson Road just South of Pecos Road. We are in the PRESIDIO complex on the 2 nd floor of the North building. 1100 South Dobson Road, #223. Chandler, AZ 85286. Phone: 480-821-8888. Fax: 480-821-0888. Directions from the East: Take AZ-202 San Tan Loop West and Exit 49 for Dobson Rd..