My office is just North of 121 on the Dallas Tollway and Gaylord Parkway:

2591 Dallas Parkway, Suite 207
Frisco, TX 75034
(469) 333-3333
1-888-DWI-FRISCO
1-800-933-0891 -- Toll Free Fax

Traveling north on the Dallas Tollway continue until you reach the Gaylord exit in Frisco. Exit on to Gaylord and make a left at the light going over Dallas Parkway (also known as Dallas Tollway) and head south on the service road. Turn into the FIRST parking lot on your right. Sign reads...Hall Office Park. (Note: There are 2 buildings that look Identical. I am in the 2591 Building, NOT the 2595 building). When you enter the building, take the elevator to the 2nd floor and see the receptionist in 207.