Ascension Saint Thomas is the leading faith-based health care system in Tennessee and is a part of Ascension, the largest non-profit health system in the U.S. and the world's largest catholic health system. We are committed to delivering compassionate, personalized care to all, with special attention to persons living in poverty and those most vulnerable. We are an outpatient only hospital department that offers multiple cardiac specific non-invasive exams. The tests are performed by trained personnel utilizing Hospital standards. Our Echo lab is Accredited with the International Commission for the Accreditation of Echocardiography Labs. The majority of our staff have worked in their fields for over 10 to 35 years. Please be advised that your ordering physician must have ordering privileges with Ascension Saint Thomas. Please contact your provider to confirm these privileges. The phone number for the scheduling department of this provider is (615) 284-5000, Option 1. The fax facilitator number is (615) 284-2053.