Specialists at NHI focus on Non-Invasive testing, as well as TEE, Advanced Imaging, Interventional Cardiology, Electrophysiology (Watchman, Lariat), Structural Heart procedures, Vascular and Cardiothoracic Surgery. Specialists at NHI focus on: non-invasive testing as well as invasive cardiac catheterization, TEE, interventional cardiology, EP, structural heart procedures, vascular and cardiac surgery.