Dr. William H. Messerschmidt

Bryan Helsel, MD, is a cardiovascular thoracic surgeon in Johnson City, TN. Dr. Helsel recently moved his family to the area after he retired from the U.S. Army, where he flew attack helicopters. He is passionate about teamwork, and providing the best possible care to his patients. Dr. Helsel is rated as an Experienced provider by MediFind in the treatment of Fibrosing Mediastinitis. His top areas of expertise are Thoracic Aortic Aneurysm, Aortic Valve Stenosis, Aortic Dissection, Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

Robert Ferguson, DO, believes the best care begins with treating patients the way he would treat his own family. Guided by the principle “Do unto others as you would have them do unto you,” he approaches every case with compassion and skill. As a cardiothoracic surgeon, Dr. Ferguson finds meaning in building trust with patients and guiding them through complex and often life-changing procedures. Dr. Ferguson is rated as an Experienced provider by MediFind in the treatment of Fibrosing Mediastinitis. His top areas of expertise are Pleuropulmonary Blastoma, Lung Nodules, Lung Cancer, Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

"Growing up, Tyler Greenfield, MD, loved watching his father, a small-town general practitioner, treat patients. He knew medicine was the life he wanted for himself one day. ""I was drawn to surgery because of my love for human anatomy,"" Dr. Greenfield says. ""I especially enjoy the physiology of the heart and lungs and performing surgical procedures to treat conditions that affect them."" He believes the doctor-patient relationship is enhanced by open communication. ""My job is to help patients get better,"" he says. ""By listening, I learn what is important to know about them and their health.""". Dr. Greenfield is rated as an Advanced provider by MediFind in the treatment of Fibrosing Mediastinitis. His top areas of expertise are Pleuropulmonary Blastoma, Squamous Cell Lung Carcinoma, ALK-Positive Non-Small Cell Lung Cancer, and Thoracic Aortic Aneurysm.