You did not set a valid value for 'Custom Variable 1' for Patient Portal syndicated content. Acceptable values are: TriStar Health 1000 Health Park Dr. Ste. 500 Brentwood, TN 37027 Telephone: (800) 242-5662. ... TriStar Health 1000 Health Park Dr. Ste. 500 Brentwood, TN 37027 Telephone: (800) 242-5662.