Dr. Rachel L Dunagin has 2 locations. Internal Medicine Associates Of Plano 6124 W Parker Rd Ste 234 Plano, TX 75093. (972) 468-9999. ACCEPTING NEW PATIENTS. Wade Huebner Clinic 9301 N Central Expy Ste 670 Dallas, TX 75231. (214) 345-8250. ACCEPTING NEW PATIENTS..