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 Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Mitral Valve Regurgitation, Necrosis, Dilated Cardiomyopathy (DCM), and Cardiomyopathy.

Rebecca Hung is an Advanced Heart Failure and Transplant Cardiologist in Nashville, Tennessee. Dr. Hung is rated as a Distinguished provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Cardiac Amyloidosis, Heart Failure, Transthyretin Amyloidosis, and Transthyretin Amyloid Cardiomyopathy.

Muhamed Baljevic is a Hematologist Oncology specialist and a Hematologist in Nashville, Tennessee. Dr. Baljevic is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Multiple Myeloma, Relapsed Refractory Multiple Myeloma (RRMM), Smoldering Multiple Myeloma, Bone Marrow Transplant, and Bone Marrow Aspiration. Dr. Baljevic is currently accepting new patients.

David Slosky is a Cardiologist in Nashville,, Tennessee. Dr. Slosky is rated as an Advanced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Angina, Cardiac Ablation, and Pacemaker Implantation.

Dr. Chad Armstrong comes to The Chattanooga Heart Institute from Vanderbilt University Medical Center where he completed a fellowship in Cardiovascular Medicine and where he also completed an Internal Medicine residency. Dr. Armstrong sees patients at our Chattanooga Glenwood office and at our Hixson office. Dr. Armstrong is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Mitral Valve Regurgitation, Necrosis, Aortic Regurgitation, and Aortic Valve Stenosis.

Dr. Andrew Fowler is a cardiologist at The Chattanooga Heart Institute. He is board-certified in internal medicine, cardiovascular diseases, and interventional cardiology. Dr. Fowler completed his fellowship in cardiology at the Medical University of South Carolina, where he also pursued advanced training in interventional cardiology. Prior to that, he completed his internship and residency in internal medicine at the University of Alabama at Birmingham. He graduated magna cum laude from Furman University with a B.S. in chemistry and a B.A. in music. With a patient-centered approach, Dr. Fowler believes in a shared decision-making process with his patients. His goal is to help patients achieve longer lives and allow for a better quality of life. He was inspired to become a physician so that he could be with others in their time of need and finds great fulfillment in fostering meaningful relationships with his patients.He is particularly drawn to the anatomy, physiology, and hemodynamics of cardiology, and is excited about the advancements in the field that help patients feel better and live longer. Dr. Fowler was instrumental in integrating fractional flow reserve, a technique which improves the ability to see the significance of a blockage, into catheterizations in Chattanooga. He views advancements in imaging technology as a significant evolution in his field, which makes for better decision-making and allows patients to avoid unnecessary procedures.Outside of work, Dr. Fowler enjoys spending time with his wife, creating music with loved ones, and playing pickleball. Dr. Fowler is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Angina, Atrial Fibrillation, and Heart Bypass Surgery.

Ashley Bock is an Advanced Heart Failure and Transplant Cardiologist in Nashville, Tennessee. Dr. Bock is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Heart Failure, Pulmonary Edema, Cardiogenic Shock, Cardiac Ablation, and Pacemaker Implantation.

Deepak Gupta is a Cardiologist in Nashville, Tennessee. Dr. Gupta is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Heart Failure, Heart Failure with Preserved Ejection Fraction (HFpEF), Traumatic Brain Injury, Craniectomy, and Vitrectomy.

A Thomas is a Cardiologist in Nashville, Tennessee. Dr. Thomas is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Necrosis, Cardiomyopathy, Arrhythmogenic Right Ventricular Cardiomyopathy, Pacemaker Implantation, and Cardiac Ablation.

Muddassir Mehmood is an Advanced Heart Failure and Transplant Cardiologist and a Cardiologist in Knoxville, Tennessee. Dr. Mehmood is rated as an Advanced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Heart Failure, Transthyretin Amyloid Cardiomyopathy, Transthyretin Amyloidosis, Pulmonary Edema, and Heart Transplant. Dr. Mehmood is currently accepting new patients.

Teresa Swanger is an adult gerontology nurse practitioner who worked at The Chattanooga Heart Institute as a nurse for many years before pursuing her master’s degree to become a nurse practitioner. She earned a Master of Science in Nursing from Southern Adventist University. Teresa works with our cardiologists in the care of their patients. Ms. Swanger is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Atrial Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Paroxysmal Supraventricular Tachycardia (PSVT), and Heart Failure with Preserved Ejection Fraction (HFpEF).

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 an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Mitral Valve Regurgitation, Necrosis, Arterial Embolism, Coronary Heart Disease, and Heart Bypass Surgery.

Sabrina Stover is a board-certified nurse practitioner specializing in cardiology at The Chattanooga Heart Institute. Sabrina earned a Bachelor of Science in Nursing from the University of Texas at Arlington, and later earned a Master of Science in Nursing from Vanderbilt University in Nashville. She joined The Chattanooga Heart Institute in 2023, but has been with CHI Memorial since 2008. She is passionate about preventative care and helping patients achieve sustainable improvements in their overall health. Sabrina’s areas of focus include the prevention and management of inflammatory diseases through lifestyle modifications, including diet and exercise. She stresses the importance of heart health for overall wellness.Sabrina is a recipient of the St. Luke’s Healer Heart Award for Inclusion (2022) and was nominated for Nurse of the Year (2022). She also received the DAISY Award for Extraordinary Nurses in 2010 and 2014, Nurse of Excellence in 2013, Interventional Radiology Leadership Award in 2011, Interventional Radiology Employee Excellence Award in 2012, and Caring Spirit Award in 2009.Her philosophy of care centers on building trust, compassion, and empathy with each patient to collaboratively set goals and achieve incremental health improvements. She was determined to become a health care provider after witnessing shortcomings in the health care system during her father’s care, which inspired her to provide compassionate and effective care to every patient as if they are family.Her multifaceted nursing background in primary care, skilled nursing facilities, and home care, along with her experience working with infectious disease physicians during the COVID-19 pandemic, has shaped her approach to patient care and led her to specialize in cardiology.Outside of work, Sabrina enjoys spending time with her husband, grandchildren, and close friends. She is also actively involved in her church and volunteers with the elderly in her community. Ms. Stover is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Paroxysmal Supraventricular Tachycardia (PSVT), Atrioventricular Nodal Reentrant Tachycardia (AVNRT), and Atrial Tachycardia.

Genna Barnett is a board-certified family nurse practitioner specializing in cardiology at The Chattanooga Heart Institute. She earned both a Master of Science in Nursing and Bachelor of Science in Nursing from the University of Memphis.Genna’s focus is on providing comprehensive cardiac care, with a particular interest in the needs of elderly patients. She also has extensive experience in primary care and geriatrics.Genna is committed to providing patient-centered care, treating each individual with dignity and respect. She values the cultural and spiritual beliefs of her patients and works collaboratively with a multidisciplinary team to ensure safe and effective care. Her passion for cardiology began in nursing school, fueled by a family history of heart disease and a fascination with the complexities of the heart. She was inspired to become a provider after volunteering at a nursing home at the age of 11.In her free time, Genna enjoys watercolor painting and reading. She spends time with her boyfriend, his daughter, and her niece and nephew. Ms. Barnett is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Atrial Tachycardia, and Paroxysmal Supraventricular Tachycardia (PSVT).

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 Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Arrhythmias, Dilated Cardiomyopathy (DCM), Atrial Fibrillation, Pacemaker Implantation, and Cardiac Ablation.

Sara Horst is a Gastroenterologist in Nashville, Tennessee. Dr. Horst is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Crohn's Disease, Ulcerative Colitis, Viral Gastroenteritis, Endoscopy, and Colonoscopy. Dr. Horst is currently accepting new patients.

Josh Black holds a Master of Science in Nursing from the University of Tennessee at Chattanooga. He received his Bachelor of Science degree at the University of Tennessee in Chattanooga where he was a National Society of Collegiate Scholars Member and Student Director of the UTC Christian Student Center. Josh has been with The Chattanooga Heart Institute since 2013. Mr. Black is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Paroxysmal Supraventricular Tachycardia (PSVT), Atrial Tachycardia, and Inappropriate Sinus Tachycardia (IST).

A specialist in peripheral vascular disease, Dr. Brian H. Negus joined The Chattanooga Heart Institute from private practice in Gainesville, Georgia, where he also served as director of the cardiology laboratory at Northeast Georgia Medical Center.He received his doctor of medicine degree from the Medical College of Georgia in Augusta and completed both his internship and residency in internal medicine and cardiology fellowship at Parkland Memorial Hospital in Dallas. He conducted his fellowship in interventional cardiology at the University of Alabama at Birmingham, where he then served as assistant professor of medicine in the interventional cardiology section.Dr. Negus’ work with research has included projects conducted at the Medical College of Georgia and Parkland Memorial as well as at the University of Alabama at Birmingham and Emory University in Atlanta, Georgia.Board certified in internal medicine and cardiovascular diseases, he is a member of the Chattanooga-Hamilton County Medical Society. In addition, he is a fellow in the American College of Cardiology and American Heart Association. Dr. Negus is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. His top areas of expertise are Arterial Embolism, Coronary Heart Disease, Carotid Artery Disease, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.

Meredith Pugh is a Pulmonary Medicine specialist and an Intensive Care Medicine provider in Nashville, Tennessee. Dr. Pugh is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Pulmonary Hypertension, Pulmonary Veno-Occlusive Disease, Lung Metastases, Acute Interstitial Pneumonia, and Endoscopy. Dr. Pugh is currently accepting new patients.

Holly Rogers holds a Master of Science degree in Advanced Practice Nursing from Southern Adventist University. She received her Bachelor of Science in Nursing from Tennessee Technological University. Holly has 23 years of healthcare experience with 21 of those years spent working specifically in cardiology. Ms. Rogers is rated as an Experienced provider by MediFind in the treatment of Transthyretin Amyloid Cardiomyopathy. Her top areas of expertise are Atrial Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Paroxysmal Supraventricular Tachycardia (PSVT), and Inappropriate Sinus Tachycardia (IST).