TriStarHealth.com. 1000 Health Park Dr. Ste. 500, Brentwood, TN 37027. Phone: (800) 242-5662. facebook twitter youtube. For us, it's all about people. At TriStar Health, you'll find that caring extends to both our patients and our people. TriStar Health is the region's largest, most comprehensive healthcare provider in Middle Tennessee ....