FLOWER MOUND 3424 Long Prairie Road, Suite 200 Flower Mound, TX 75022. Phone (972) 436-7557 Fax (972) 221-8246. CORINTH 3001 FM 2181, Suite 400 Corinth, TX 76210. Phone (972) 436-7557 Fax (972) 221-8246 Friday mornings only. Office hours. Monday 8:00 AM - 5:00 PM ... Patient Portal. Pay Online..