Tri-City Vein Center. 6402 E. Superstition Springs Boulevard, Mesa, AZ 85206. Tri-City Cardiology (Gilbert) 3530 S. Val Vista Drive, Gilbert, AZ 85297. Tri-City Cardiology (Dobson) 1520 S. Dobson Road, Mesa, AZ 85202. Tri-City Cardiology (San Tan Valley) 36543 N. Gantzel Road, San Tan Valley, AZ 85140..