
Overview
Dr. William (Bill) Warren is a cardiologist specializing in non-invasive and imaging cardiology. He is board-certified in Internal Medicine, Cardiovascular Disease, Nuclear Cardiology, and Echocardiography. Dr. Warren graduated summa cum laude from Princeton University, earned his Doctor of Medicine degree at Harvard Medical School, completed his internal medicine internship and residency at Massachusetts General Hospital, and finished a cardiology fellowship at Johns Hopkins Hospital. His areas of focus include a wide range of cardiovascular conditions and treatments, with expertise in non-invasive diagnostic studies.Since joining The Chattanooga Heart Institute in 2003, Dr. Warren has become a valued leader at CHI Memorial and in the Chattanooga medical community. He currently serves as managing partner of The Chattanooga Heart Institute, where he collaborates with over 30 colleagues. He previously chaired the CHI Memorial Board of Directors.Dr. Warren possesses a broad range of clinical interests and expertise. His dedication to patient care stems from a deep love of science combined with a genuine ability to connect with patients on a personal level. The complexity and diverse treatment options within cardiovascular care drew him to this field, allowing him to help critically ill patients recover and thrive. He was the recipient of CHI Memorial’s inaugural St. Luke’s Healer’s Heart award which recognizes physicians and providers for demonstrating compassion, inclusion, integrity, excellence and collaboration.Dr. Warren's commitment extends beyond clinical practice. He has conducted research studies which have been published in prestigious journals including the American College of Cardiology Current Journal Review, Circulation, Journal of Infectious Diseases, Journal of Clinical Microbiology, and Journal of Clinical Research.Away from work, Dr. Warren enjoys nature photography and travel. He has visited all seven continents.
Dr. Warren is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Angina, Pacemaker Implantation, and Heart Bypass Surgery.
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
- EPO
- INSURANCE PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE
- PPO
- EPO
- HMO
- PPO
- MEDICARE MAPD
- OTHER MEDICARE
- HMO
- MEDICARE MAPD
- MEDICARE PDP
- 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
- HMO
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE PDP
- EPO
- HMO
- PPO
- OTHER COMMERCIAL
- 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
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 Atrial Septal Defect (ASD). His top areas of expertise are Mitral Valve Regurgitation, Coronary Heart Disease, Atherosclerosis, Heart Bypass Surgery, and Pacemaker Implantation.
Centennial Heart LLC
Matthew Wiisanen is an Interventional Cardiologist and a Cardiologist in Chattanooga, Tennessee. Dr. Wiisanen is rated as an Advanced provider by MediFind in the treatment of Atrial Septal Defect (ASD). His top areas of expertise are Apoplexy, Atrial Fibrillation, Heart Attack, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement. Dr. Wiisanen is currently accepting new patients.
The Chattanooga Heart Institute - Chattanooga
Dr. Vimal Ramjee is board certified in cardiovascular diseases, internal medicine, echocardiography, cardiac CT, and advanced cardiovascular life support. He has received advanced specialty training in transthoracic echocardiography, transesophageal echocardiography and stress echocardiography.He completed a fellowship in cardiovascular disease and advanced cardiovascular imaging and translational research at the Hospital of the University of Pennsylvania in Philadelphia. Dr. Ramjee completed his residency in internal medicine at Emory Hospital in Atlanta. He received his medical degree from Mount Sinai School of Medicine in New York and two Bachelor of Science degrees from Emory University in Atlanta. He has received numerous academic honors and awards. Dr. Ramjee is rated as a Distinguished provider by MediFind in the treatment of Atrial Septal Defect (ASD). His top areas of expertise are Atrial Fibrillation, Mitral Valve Regurgitation, Aortic Regurgitation, Coronary Heart Disease, and Heart Bypass Surgery.
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
- AnginaDr. Warren isDistinguished. Learn about Angina.
- Aortic RegurgitationDr. Warren isDistinguished. Learn about Aortic Regurgitation.
- Aortic Valve StenosisDr. Warren isDistinguished. Learn about Aortic Valve Stenosis.
- Arterial EmbolismDr. Warren isDistinguished. Learn about Arterial Embolism.
- AtherosclerosisDr. Warren isDistinguished. Learn about Atherosclerosis.
- Atrial FibrillationDr. Warren isDistinguished. Learn about Atrial Fibrillation.
- Advanced
- Adenosine Deaminase 2 DeficiencyDr. Warren isAdvanced. Learn about Adenosine Deaminase 2 Deficiency.
- ApoplexyDr. Warren isAdvanced. Learn about Apoplexy.
- ArrhythmiasDr. Warren isAdvanced. Learn about Arrhythmias.
- Atrial TachycardiaDr. Warren isAdvanced. Learn about Atrial Tachycardia.
- Atrioventricular Nodal Reentrant Tachycardia (AVNRT)
- Bidirectional TachycardiaDr. Warren isAdvanced. Learn about Bidirectional Tachycardia.
- Experienced
- Abdominal Aortic Aneurysm (AAA)Dr. Warren isExperienced. Learn about Abdominal Aortic Aneurysm (AAA).
- Acute Coronary SyndromeDr. Warren isExperienced. Learn about Acute Coronary Syndrome.
- Anomalous Left Coronary Artery from the Pulmonary Artery
- Aortic DissectionDr. Warren isExperienced. Learn about Aortic Dissection.
- Arrhythmogenic Right Ventricular Cardiomyopathy
- Arterial InsufficiencyDr. Warren isExperienced. Learn about Arterial Insufficiency.

