The Heart Hospital - 1100 Allied Dr, Plano, 75093 Position: Multicredentialed Sonographer Shift: PRN, Rotating Schedule, call requirement rotation (must live within a 30-40min radius) Experience: must have experience doing ECHOES, TEE, STRESS ECHOES. About Us Here & we promote the well-being of all individuals, families, and communities. And is the largest not-for-profit healthcare system in Texas that empowers you to live well.