Physicians & Surgeons-Cardiology go Results Found: 2 Button group with nested dropdown Northwest Houston Heart Center Northwest Houston Heart Center 308 Holderrieth Blvd. Tomball TX 77375 (281) 351-4911 Lone Star Heart & Vascular Lone Star Heart & Vascular 400 Holderrieth Blvd., Ste. 104 Tomball TX 77375 (281) 766-8800