Degrees: BS: Massachusetts Institute of Technology 1981 Electrical Engineering MS: Massachusetts Institute of Technology 1983 Electrical Engineering PhD: Massachusetts Institute of Technology 1987 Electrical Engineering MD: Harvard 1987 Medicine Professional Appointments: 1987-1988 Intern in Medicine, Brigham and Women's Hospital 1988-1990 Resident in Medicine, Brigham and Women's Hospital 1988-1990 Research Scientist, Harvard M.I.T. Division of H.S.T. 1990-1993 Fellow in Cardiology, Johns Hopkins University 1993-1998 Assistant Professor of Medicine, Johns Hopkins University 1996- Co-Director of Cardiac Electrophysiology, Johns Hopkins Hospital 1998-2005 Associate Professor of Medicine, Johns Hopkins University 2002-2005 Associate Professor of Biomedical Engineering, Johns Hopkins University 2005- Professor of Medicine, Johns Hopkins University 2005- Professor of Biomedical Engineering, Johns Hopkins University. Dr. Berger is rated as an Elite provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Ventricular Tachycardia, Cardiac Ablation, and Pacemaker Implantation.

Dr. Eric Schwartz joined Cardiovascular Specialists in July 2012. In addition to training in nuclear cardiology, echocardiography, and vascular ultrasound, Dr. Schwartz is trained in the implantation of pacemakers and defibrillators. A Howard County native, Dr. Schwartz and his wife have two sons. In his spare time, he is an avid Peloton cyclist and enjoys strength training. A member of the Active physician admitting staff at Johns Hopkins Howard County Medical Center, he currently serves as the Chairman, Department of Medicine, Chair of the Medical Staff Credentials Committee, Co-Chair of the Johns Hopkins Howard County Medical Center STEMI Committee, and Medical Director of the Interventional Radiology Cardiovascular Lab. Dr. Shwartz is a member of the Electrophysiology Clinical Community of the JHHS. He is a past recipient of the HCGH Physician of the Year award, and two-time winner of the Johns Hopkins Innovations in Clinical Care Excellence Award. Videos Implantable Heart Monitor - Loop Recorder (Q&A) Implantable Devices for People with Heart Conditions (Q&A) 2018 Physician of the Year. Dr. Schwartz is rated as an Advanced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Arrhythmias, Familial Ventricular Tachycardia, Catecholaminergic Polymorphic Ventricular Tachycardia, Ventricular Tachycardia, and Pacemaker Implantation.

David Jackson is a Cardiologist in Columbia, Maryland. Dr. Jackson is rated as an Advanced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Arrhythmias, Catecholaminergic Polymorphic Ventricular Tachycardia, Ventricular Tachycardia, and Familial Ventricular Tachycardia.

"Dr. Sunil Kumar Sinha is an Assistant Professor of Medicine in the Division of Cardiology at the Johns Hopkins University School of Medicine. He is the medical director of the Arrhythmia Service at Frederick Memorial Hospital. Dr. Sinha is also an attending physician at Johns Hopkins Howard County Medical Center. He is currently engaged in research on atrial fibrillation and catheter ablation, defibrillator and pacemaker therapy, and humanitarian device re-use. Dr. Sinha received his undergraduate degree and medical degree from the University of Manitoba in Winnipeg, Canada. He completed a residency in internal medicine at the University of Western Ontario in London, Canada. He returned to the University of Manitoba for his cardiology fellowship. Subsequently, Dr. Sinha completed his clinical cardiac electrophysiology fellowship at the Mount Sinai School of Medicine (New York, New York) prior to joining the Johns Hopkins faculty in 2005. Besides his teaching and clinical engagements, Dr. Sinha is on the editorial board for Heart Rhythm, the official journal of the Heart Rhythm Society and the Cardiac Electrophysiology Society, and was recognized with the HRS “Remarkable Reviewer” distinction from 2006 - 2015 and ""Remarkable Editor"" distinction from 2016 - 2017. He is also a reviewer for PACE, and Circulation: Arrhythmias & Electrophysiology.". Dr. Sinha is rated as an Advanced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Heart Attack, Arrhythmias, Apoplexy, Cardiac Ablation, and Pacemaker Implantation.

Dr. Keith Friedman joined the practice in 2003 following the completion of his Cardiology fellowship at the University of Maryland Medical Center. Dr. Friedman is also trained in nuclear cardiology and echocardiography. Born and raised in Baltimore, Dr. Friedman and his wife, who reside in Pikesville, have two sons and a daughter. A member of the Active physician admitting staff at Johns Hopkins Howard County Medical Center, he currently serves as Section Chief of Cardiology and as Medical Director of the Cardiac Telemetry Unit. Dr. Friedman is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Arrhythmias, Atrial Fibrillation, High Cholesterol, and Cardiomyopathy.

Dr. Daniel Kim joined Cardiovascular Specialists in 2018 following completion of his cardiology fellowship at the University of Maryland. As a non-invasive cardiologist, he is trained in echocardiography, transesophageal echocardiography, nuclear medicine, and vascular ultrasound. He and his wife, who is a pediatric pulmonologist specializing in sleep, have two children and reside in Howard County. Dr. Kim is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Atrial Fibrillation, Familial Ventricular Tachycardia, Atherosclerosis, and Coronary Heart Disease.

Dr. Jasmin Sahbaz joined Cardiovascular Specialists in July 2021 following completion of his cardiology fellowship at the University of Maryland Medical Center in Baltimore, where his training included nuclear cardiology, echocardiogaphy and vascular ultrasound. He was the chief fellow during his last year of training. He completed his medical school training at SUNY Upstate Medical University in Syracuse, New York and a residency at the University of Maryland Medical Center. Originally from Bosnia, and then the Ithaca, New York area, Dr. Sahbaz graduated from Cornell University. He resides in Howard County with his wife and two children. In his spare time, he is an avid cyclist and triathlete. Dr. Sahbaz is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Heart Attack, Heart Failure, Pulmonary Edema, and Angina.

Imtiaz Chowdhry is a Cardiologist in Columbia,, Maryland. Dr. Chowdhry is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Sitosterolemia, High Cholesterol, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Dr. Jose Madrazo is a general cardiologist in the Johns Hopkins Division of Medicine, and an assistant professor of medicine at the Johns Hopkins School of Medicine. He received his medical degree from the University of Puerto Rico School of Medicine and completed his residency at the Baylor College of Medicine in Houston, TX. Dr. Madrazo pursued a cardiovascular fellowship with a focus on echocardiography at the Washington University School of Medicine before joining the Hopkins faculty. Dr. Madrazo is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Hypertrophic Cardiomyopathy (HCM), Cardiomyopathy, Familial Hypertrophic Cardiomyopathy, and Heart Attack.

Dr. Chao-Wei Hwang is an interventional cardiologist and Assistant Professor of Medicine at Johns Hopkins. Dr. Hwang received doctoral and medical training at Harvard Medical School. He completed residency in Internal Medicine at Brigham and Women's Hospital, and Cardiology and Interventional Cardiology fellowships at The Johns Hopkins Hospital. Dr. Hwang joined the Division of Cardiology as faculty in 2011. He spent a year at Virtua Health System in New Jersey as systemwide Director of Interventional Cardiology, and is now Director of the Johns Hopkins Interventional Cardiology Program at Frederick Health Hospital (FHH) and Co-Medical Director of the FHH Cardiac Catheterization Lab. Dr. Hwang is an expert interventional cardiologist specializing in complex coronary interventions, management of acute coronary syndromes and advanced coronary artery disease. He has specialized expertise in PCI of chronic total occlusions (CTO). Dr. Hwang has been involved in a number of device and coronary clinical trials, and his broad areas of research interests include developing and optimizing devices for the treatment of coronary artery disease. Dr. Hwang has published extensively in stent-based drug delivery systems and local delivery systems for cell-based therapies to the heart. Dr. Hwang is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Heart Attack, Apoplexy, Arterial Embolism, Angioplasty, and Percutaneous Coronary Intervention (PCI).

Dr. Maniu joins the interventional section as an interventional cardiologist with over two decades of experience in academic, hospital, and community settings. He earned his medical degree from Carol Davila University of Medicine and Pharmacy in Bucharest, Romania, and completed his residency in Internal Medicine, as well as fellowships in Cardiovascular Diseases and Interventional Cardiology, at the Mayo Clinic in Jacksonville and Rochester. Clinically, Dr. Maniu sees outpatients at the Cardiology Clinic in Columbia, and he will cover the interventional lab at Howard County Medical Center. Also, he interprets outpatient echos, primarily at our Columbia Clinic office. Dr. Maniu is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Heart Attack, Apoplexy, Arterial Embolism, and Pulmonary Edema.

Dr. Julie Marie Miller is an assistant professor in the division of cardiology at the Johns Hopkins School of Medicine as well as director of the vascular cardiology program in the division of cardiology at Johns Hopkins University. Dr. Miller is the director of the Angiography Core Imaging Laboratory, which provides expert academic leadership, protocol development, manual of operating procedures, technical training, and complex image analysis for a multitude of research projects. The Angiographic Core Analysis is generally considered the reference standard (i.e. gold standard) test for coronary obstruction and flow. Dr. Miller earned her undergraduate degree at Saint Olaf College and medical degree at the University of Minnesota Medical School. She completed an internship and residency at Duke University Medical Center. She joined the Johns Hopkins faculty in 1999. Dr. Miller has published extensively and was most recently honored with the Eli-Lilly Grant for Research in Cardiovascular Disease in Women for her work on outcomes of PTCA in women and relationship to vessel size. Dr. Miller is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. Her top areas of expertise are Apoplexy, Heart Attack, Arterial Embolism, and Heart Failure with Preserved Ejection Fraction (HFpEF).

Stephen Shorofsky is a Cardiac Electrophysiologist and a Cardiologist in Baltimore, Maryland. Dr. Shorofsky is rated as an Elite provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Arrhythmias, Ventricular Tachycardia, Paroxysmal Supraventricular Tachycardia (PSVT), Cardiac Ablation, and Pacemaker Implantation. Dr. Shorofsky is currently accepting new patients.

George Groman is a Cardiologist in Columbia,, Maryland. Dr. Groman is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are High Cholesterol, Factor 7 Deficiency, Factor 13 Deficiency, and Dysfibrinogenemia.

Joseph Marine, MD, MBA, FACC, FHRS, is a clinical cardiac electrophysiologist who practices primarily at the Johns Hopkins Hospital in Baltimore, Maryland. He is a Professor of Medicine at the Johns Hopkins University School of Medicine and holds appointments as Vice-Director of Operations for the Division of Cardiology and Section Chief of Cardiology for Johns Hopkins Community Physicians. He trained at UC San Francisco Medical School, Brigham and Women’s Hospital/Harvard Medical School, Boston University Medical Center, and Beth Israel Deaconess Medical Center. Dr. Marine has lectured widely on a variety of arrhythmia topics and has served as a co-director of the American College of Cardiology (ACC) Cardiovascular Overview and Board Review Course for 10 years. He currently serves on the ACC Board of Governors and is co-editor of the ACC/HRS EP Self-Assessment Program. He also serves on other committees for the ACC, the Heart Rhythm Society, and MedChi. He is co-author of more than 130 original research and review articles and has served on writing committees for several national cardiology practice and training guidelines. As a clinical cardiac electrophysiologist, Dr. Marine specializes in the diagnosis and treatment of arrhythmias, which are heart rhythm disorders that cause the heart to beat too rapidly, too slowly, or irregularly. His research focuses on further improving the safety and effectiveness of catheter ablation and other treatments for atrial fibrillation and other atrial and ventricular arrhythmias. Dr. Marine is rated as a Distinguished provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Atrial Fibrillation, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Arrhythmias, Cardiac Ablation, and Heart Transplant.

Khalid Zirvi is a Cardiologist and an Interventional Cardiologist in Laurel, Maryland. Dr. Zirvi is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Apoplexy, Heart Attack, Arterial Embolism, Atherosclerosis, and Angioplasty.

Michael Carlos is a Cardiologist in Laurel,, Maryland. Dr. Carlos is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Hypertension, Glucocorticoid-Remediable Aldosteronism, Familial Dilated Cardiomyopathy, and Coronary Heart Disease.

Lisa Keithley is a primary care provider, practicing in Family Medicine in Elkridge, Maryland. Dr. Keithley is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. Her top areas of expertise are Cirrhosis, Familial Combined Hyperlipidemia, Xanthoma, and Familial Hypertension. Dr. Keithley is currently accepting new patients.

Martin Engelhardt is a Cardiologist in Ellicott City,, Maryland. Dr. Engelhardt is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Atrial Fibrillation, Familial Dilated Cardiomyopathy, Hypertension, and Glucocorticoid-Remediable Aldosteronism.

John Yackee is a Cardiologist in Laurel,, Maryland. Dr. Yackee is rated as an Experienced provider by MediFind in the treatment of Ventricular Tachycardia. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Sick Sinus Syndrome, Hypertrophic Cardiomyopathy (HCM), and Pacemaker Implantation.