Yun, Sun M.D.Attending PhysicianInternal Medicine Education: Henan, Henan Medical School of Zhengzhou UniversityMain Office:336.545.1515 Bethany Medical 3402 Battleground Ave Greensboro, NC 27410 Clinic Intersts:internal medicine, transthoracic echo cardiology, exercise stress testing, nuclear stress testing, stress cardiovascular disease and pharmacological echocardiography stress testing.Certifications: Board Certified in Internal Medicine