Dannis Hood is a Cardiologist in Ringgold,, Georgia. Dr. Hood is rated as an Advanced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Coronary Heart Disease, Angina, Atherosclerosis, Heart Bypass Surgery, and Cardiac Ablation.

Merriman Colvard is a Cardiologist in Ringgold, Georgia. Dr. Colvard is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Dilated Cardiomyopathy (DCM), Heart Failure with Preserved Ejection Fraction (HFpEF), Pulmonary Edema, and Pulmonary Veno-Occlusive Disease.

Dr. Ondrej Lisy completed his internship and internal medicine residency at the Mayo Clinic College of Medicine in Rochester, MN. Also at the Mayo Clinic in Rochester, he completed his fellowship in cardiovascular diseases with the clinician investigator track which was followed by additional fellowship training in cardiac imaging. He received his medical degree and Ph.D. degree in cardiovascular physiology from Charles University in Prague, Czech Republic, prior to accepting the Assistant Professor of Medicine position at the Mayo Medical School.He received numerous awards while at the Mayo Clinic including the Young Investigator Award of the Heart Failure Society of America and the American College of Physicians and Donald C. Balfour Award of the Mayo Clinic Alumni Association for Meritorious Research. Dr. Lisy has been published in numerous medical journals including Circulation, Journal of the American College of Cardiology, Hypertension, American Journal of Physiology and Kidney International. Dr. Lisy has been involved in cutting edge research on heart failure for many years including designing peptides for heart failure treatment.Dr. Lisy has expertise in noninvasive cardiology and cardiac imaging modalities after he did his advanced specialty training in nuclear cardiology and echocardiography. He has been instrumental in establishing the Cardiac PET Program at Memorial Hospital where he has served since 2018 as the medical director of the Nuclear Cardiology Laboratory. Dr. Lisy is board certified in cardiology, internal medicine and nuclear cardiology. He is a Fellow of the American College of Cardiology. Dr. Lisy is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Mitral Valve Regurgitation, Necrosis, Arterial Embolism, Coronary Heart Disease, and Heart Bypass Surgery.

Dr. Henry Cheng is board-certified in imaging and general cardiology. He earned his medical degree from the University of California at Los Angeles. Dr. Cheng completed an internal medicine residency at Johns Hopkins Hospital in Baltimore, MD, and a cardiovascular medicine fellowship at the Hospital of the University of Pennsylvania in Philadelphia, PA. In addition to general cardiology care, Dr. Cheng specializes in cardio-oncology, echocardiography, and nuclear cardiology. He sees patients at the Chattanooga Citico office and at our Hixson office. Dr. Cheng is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Mitral Valve Regurgitation, Necrosis, Dilated Cardiomyopathy (DCM), and Cardiomyopathy.

Dr. Gregg Shander’s research on the heart’s electrical functions adds a new dimension to The Chattanooga Heart Institute’s renowned electrophysiology expertise. Dr. Shander has been interested in heart rhythm disturbances since he was in medical school. He received the Stanley J. Sarnoff award for cardiovascular research through which he studied rhythm disturbances. He transferred this interest from research into the care of his patients.Dr. Shander earned his doctor of medicine degree at the University of Pittsburgh School of Medicine in Pittsburgh, Pennsylvania, and completed his internal medicine internship and residency at the University of Chicago Hospital. He performed research involving arrhythmias at the University of Amsterdam, The Netherlands, and the University of Chicago. He completed his general cardiology and electrophysiology fellowships at Duke University Medical Center in Durham, North Carolina, where he received further training in cardiac pacing and clinical electrophysiology including radiofrequency ablation.Dr. Shander received the American Heart Association Basic Sciences Research Award from the Chicago Chapter. He has also presented before the American Heart Association’s scientific sessions and at numerous other cardiovascular research symposiums. He has been published in the Journal of Cardiovascular Electrophysiology, the Journal of American Physiology, the Journal of Molecular and Cellular Cardiology, and the supplement to the American Heart Association’s journal, Circulation.|Dr. Shander, his wife, and two children enjoy spending time doing activities as a family. Dr. Shander is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Dilated Cardiomyopathy (DCM), Pacemaker Implantation, and Cardiac Ablation.

Dr. Lehman is board certified in Cardiovascular Disease and specializes in imaging cardiology. He came to Chattanooga Heart from Duke University Health System in Durham, NC. Dr. Lehman completed a fellowship and residency in Cardiovascular Disease at Duke University. He received his medical degree from Duke University School of Medicine and a Master’s of Public Policy, Concentration in Health Policy from Duke University Sanford School of Public Policy. He graduated summa cum laude from Georgetown University with a Bachelor’s of Science, Biology, where he had the highest GPA for all bachelor of science degrees. He served as a congressional aid on Capitol Hill. Dr. Lehman is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Mitral Valve Regurgitation, Aortic Regurgitation, Necrosis, and Arterial Embolism.

Christopher Greene is a primary care provider, practicing in Family Medicine in Ringgold, Georgia. Dr. Greene is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and High Cholesterol. Dr. Greene is currently accepting new patients.

Michael Dant is a primary care provider, practicing in Family Medicine in Ringgold, Georgia. Dr. Dant is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Infant Hyperglycemia, High Cholesterol, Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Dant is currently accepting new patients.

Harish Manyam is a Cardiologist in Chattanooga,, Tennessee. Dr. Manyam is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Paroxysmal Supraventricular Tachycardia (PSVT), Pacemaker Implantation, and Cardiac Ablation.

Christopher Haddock is a primary care provider, practicing in Family Medicine in Ringgold, Georgia. Dr. Haddock is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Sitosterolemia, Maturity Onset Diabetes of the Young, High Cholesterol, and Familial Hypertension. Dr. Haddock is currently accepting new patients.

Dorel Bidiuc is a primary care provider, practicing in Family Medicine in Ringgold, Georgia. Dr. Bidiuc has been practicing medicine for over 44 years and is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Chronic Obstructive Pulmonary Disease (COPD), Familial Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Bidiuc is currently accepting new patients.

John Harris is a primary care provider, practicing in Family Medicine in Ringgold, Georgia. Dr. Harris is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Sitosterolemia. Dr. Harris is currently accepting new patients.

William Blalock is a Cardiologist in Chattanooga,, Tennessee. Dr. Blalock is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Heart Attack, Mitral Valve Regurgitation, Atrial Fibrillation, and Apoplexy.

Steven Stubblefield is a Cardiologist in Chattanooga,, Tennessee. Dr. Stubblefield is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Angina, Unstable Angina, Atherosclerosis, Heart Bypass Surgery, and Pacemaker Implantation.

Walter Few is a Cardiologist in Chattanooga,, Tennessee. Dr. Few is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Angina, Atherosclerosis, Coronary Heart Disease, Heart Attack, and Pacemaker Implantation.

John Golding is a Cardiologist in Chattanooga,, Tennessee. Dr. Golding is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Angina, Heart Attack, Atherosclerosis, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Gerald Johnson is a Pediatric Cardiologist in Chattanooga, Tennessee. Dr. Johnson is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Heart Murmurs, Ventricular Septal Defects, Familial Dilated Cardiomyopathy, and Patent Foramen Ovale.

Joseph Zenisek is a Cardiologist and an Interventional Cardiologist in Chattanooga, Tennessee. Dr. Zenisek has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Angina, Coronary Heart Disease, Atherosclerosis, Heart Failure, and Heart Bypass Surgery. Dr. Zenisek is currently accepting new patients.

Dr. Keith Bruce is a native of Cleveland, Tennessee. He is board certified in internal medicine, cardiovascular, and clinical cardiac electrophysiology.Dr. Bruce specializes in the treatment of cardiac arrhythmias, ablation, heart rhythm disorders, and implantable cardiac devices. He is currently participating in a national trial on atrial fibrillation and has previously participated in multiple preclinical trials for implantable devices and preclinical drug trials.Dr. Bruce is the recipient of numerous significant awards including the Mayo Clinic’s Cardiovascular Diseases Outstanding Achievement Award in 2005. He has made numerous national and international presentations on cardiac topics. Dr. Bruce is rated as an Advanced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Arrhythmias, Dilated Cardiomyopathy (DCM), Atrial Fibrillation, Pacemaker Implantation, and Cardiac Ablation.

Dr. Kelly Richardson is a highly experienced physician-scientist and cardiac electrophysiologist with The Chattanooga Heart Institute. She specializes in Cardiology and Electrophysiology, Dr. Richardson is board-certified by the American Board of Internal Medicine in both Cardiovascular Disease and Clinical Cardiac Electrophysiology.A native of Chattanooga, she started her journey by earning her Bachelor of Science degree with highest distinction from the University of North Carolina at Chapel Hill before graduating with high honors from Vanderbilt Medical School. She then completed her Internal Medicine residency at Massachusetts General Hospital and Harvard Medical School in Boston.Because of her passion for cardiology, Dr. Richardson pursued fellowships in Cardiology and Cardiac Electrophysiology at Stanford University, as well as a fellowship in Biodesign, which combined medicine and engineering. Prior to joining The Chattanooga Heart Institute and returning to Chattanooga, she served as a cardiac electrophysiologist and clinical instructor in the San Francisco Bay area.Dr. Richardson believes in the importance of educating her patients about their diagnoses and treatment options. She empowers patients to make informed decisions that align with their wishes. Her journey into medicine stemmed from a love of science and a desire to help others, which she finds fulfilling.She is passionate about her specialty and chose cardiology and specifically electrophysiology because it combines complex problem-solving with hands-on procedures. The field is constantly evolving, especially with advancements in ablation technology, which is both exciting and rewarding.Outside of her professional life, Dr. Richardson enjoys hiking with her husband and children, traveling, and playing tennis. Dr. Richardson is rated as an Advanced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. Her top areas of expertise are Atrial Fibrillation, Fainting, Ectopic Heartbeat, Pacemaker Implantation, and Cardiac Ablation.