Contact Us If you have questions about the work ONE Tennessee is doing, or want to get involved in our work, please contact us by phone or email, or use the form below. Phone / FAX 615-856-1458 / 800-480-5469 Mailing Address P.O. Box 93Nashville, TN 37024 Email info@onetnhealth.org Office Address 6400 Windy Hill PlBrentwood, TN 37027