Stephen Walker, DDS, MS, PLLC Share: Dentistry - Periodontics Stephen Walker, DDS, MS, PLLC Visit Website 1703 E. Beltline Rd., Ste. 100 Coppell, TX 75019 (972) 462-9800 (469) 635-3503 (fax) About Map About Our mission at Walker Periodontics & Implant Dentistry is to provide every individual with the highest quality of care, utilizing the most advanced scientific technologies and treatment. What's Nearby? Distance: 5 10 15 20 25 50 mi.