
Overview
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 a Distinguished provider by MediFind in the treatment of Aortic Valve Stenosis. His top areas of expertise are Mitral Valve Regurgitation, Necrosis, Aortic Regurgitation, and Aortic Valve Stenosis.
His clinical research consists of co-authoring 1 peer reviewed article. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- HMO
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- MEDICARE MAPD
- OTHER MEDICARE
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE PART D
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER MEDICARE PART D
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- PPO
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
2501 Citico Avenue, Chattanooga, TN 37404
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
The Chattanooga Heart Institute - Chattanooga
Dr. William F. Oellerich earned his medical degree from the University of Tennessee at Memphis while concurrently earning a doctorate in philosophy in its Department of Pharmacology. He completed his internship and residency in internal medicine and served as chief resident at Barnes-Jewish Hospital at the Washington University School of Medicine in St. Louis, Missouri. He also completed his fellowship in cardiology at Washington University School of Medicine.Dr. Oellerich is board certified in cardiology and echocardiography. He has had specialized training in nuclear cardiology, diagnostic cardiac catheterization, cardiac magnetic resonance imaging, autonomic pharmacology, cardiovascular pharmacology, and echocardiography. He has been published in the American Journal of Roentgenology, Neuroscience and The Journal of Pharmacology and Experimental Therapeutics.He is the director of the echocardiography lab and CT cardiovascular program at Memorial Hospital. He plays an instrumental part in the ongoing progress of the cardiovascular CT program. He is helping to coordinate the introduction of a valve clinic to The Chattanooga Heart Institute. Dr. Oellerich is rated as a Distinguished provider by MediFind in the treatment of Aortic Valve Stenosis. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Aortic Valve Stenosis, and Angina.
The Chattanooga Heart Institute - Chattanooga
Dr. Allen Atchley is board certified in Internal Medicine and Cardiovascular Diseases and also holds specialized board certifications in Echocardiography, Nuclear Cardiology and is a Registered Physician in Vascular Interpretation, Vascular Ultrasound. He completed his fellowship in cardiology at Duke University Medical Center where he further pursued advanced training with a specialized fellowship in non-invasive cardiovascular imaging. Dr. Atchley also completed his internship and residency in Internal Medicine at Duke.Dr. Atchley performed the first 3D Transesophageal Echo (TEE) in Chattanooga in March of 2011 and is one of only a few cardiologists level 3 trained in echocardiography and nuclear cardiography in the area. While at Duke University, he participated in research focused on echo and nuclear cardiology.Dr. Atchley and his wife have four young children—twin girls, a daughter one year younger and the youngest, a son. His leisure time is spent enjoying activities with his family. Dr. Atchley is a former All-American golfer. Dr. Atchley is rated as a Distinguished provider by MediFind in the treatment of Aortic Valve Stenosis. His top areas of expertise are Mitral Valve Regurgitation, Coronary Heart Disease, Atherosclerosis, Heart Bypass Surgery, and Pacemaker Implantation.
The Chattanooga Heart Institute - Chattanooga
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 Aortic Valve Stenosis. His top areas of expertise are Mitral Valve Regurgitation, Aortic Regurgitation, Necrosis, and Arterial Embolism.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Distinguished
- Aortic RegurgitationDr. Armstrong isDistinguished. Learn about Aortic Regurgitation.
- Aortic Valve StenosisDr. Armstrong isDistinguished. Learn about Aortic Valve Stenosis.
- AtherosclerosisDr. Armstrong isDistinguished. Learn about Atherosclerosis.
- Coronary Heart DiseaseDr. Armstrong isDistinguished. Learn about Coronary Heart Disease.
- Mitral Valve RegurgitationDr. Armstrong isDistinguished. Learn about Mitral Valve Regurgitation.
- NecrosisDr. Armstrong isDistinguished. Learn about Necrosis.
- Advanced
- Adenosine Deaminase 2 DeficiencyDr. Armstrong isAdvanced. Learn about Adenosine Deaminase 2 Deficiency.
- AnginaDr. Armstrong isAdvanced. Learn about Angina.
- ApoplexyDr. Armstrong isAdvanced. Learn about Apoplexy.
- Arterial EmbolismDr. Armstrong isAdvanced. Learn about Arterial Embolism.
- Atrial FibrillationDr. Armstrong isAdvanced. Learn about Atrial Fibrillation.
- Cardiac ArrestDr. Armstrong isAdvanced. Learn about Cardiac Arrest.
- Experienced
- Abdominal Aortic Aneurysm (AAA)Dr. Armstrong isExperienced. Learn about Abdominal Aortic Aneurysm (AAA).
- Aortic DissectionDr. Armstrong isExperienced. Learn about Aortic Dissection.
- Apolipoprotein C2 DeficiencyDr. Armstrong isExperienced. Learn about Apolipoprotein C2 Deficiency.
- ArrhythmiasDr. Armstrong isExperienced. Learn about Arrhythmias.
- Arrhythmogenic Right Ventricular Cardiomyopathy
- Arterial InsufficiencyDr. Armstrong isExperienced. Learn about Arterial Insufficiency.


