Cardiovascular Consultants of Southern Delaware

R. Alberto Rosa, MD, FACC

Photo of Dr. RosaDr. Ramon Alberto Rosa is a graduate of the University of Santo Domingo in his native Dominican Republic. He completed his post-graduate medical education at the University of Pennsylvania Graduate Hospital in Philadelphia with a residency in internal medicine (1991-1994), Chief Medical Resident (1994-1995), and cardiology fellowship (1995-1998).

Dr. Rosa has practiced cardiology in Sussex County since July 1998. He has served as Medical Director of the Cardiac Catheterization Laboratory and as Chief of the Department of Cardiology at Beebe Medical Center in Lewes, DE. Dr. Rosa is trained in non-invasive cardiology, Nuclear Transesopageal Echocardiograms, as well as invasive diagnostic procedures and pacemaker implantations. Dr. Rosa is board certified by the American Boards of Internal Medicine and Cardiology. He is also a Certified Aviation Medical Examiner and is Board Certified in Nuclear Medicine.


Phone: 302-645-1233 ext :2713

Barry S. Denenberg, MD, FACC

"image002Most patients are nervous about seeing new doctors especially cardiac specialists. That’s perfectly normal and we do everything we can to put them at ease." - Dr. Barry Denenberg

Barry S. Denenberg, MD, FACC earned a B.S. in Biology from Albright College, where he graduated cum laude, and an M.D. from Temple University School of Medicine, where he was elected to Alpha Omega Alpha Medical Honor Society. His internship, residency, and fellowship were at Temple University Hospital.

Dr. Denenberg is Board Certified in Cardiology and Internal Medicine, and is a Fellow of the American College of Cardiology, a member of the Federation of Clinical Research, and a fellow at the American College of Physicians. His sub-specialties are Non-Invasive Cardiology and Nuclear Cardiology.

302-645-1233 ext: 2730

Kenneth Sunnergren, MD, PhD, FACC

Photo of Dr. Sunnergren

Dr. Sunnergren earned his B.S. degree from the University of Miami and his M.D. and Ph.D. from Thomas Jefferson University in Philadelphia. He completed his internal medicine residency at The Medical College of Virginia and his Cardiology Fellowship at The University of Texas.

Dr. Sunnergren maintains an office practice and serves at Beebe Medical Center, Lewes, DE.  He performs diagnostic cardiac catheterizations, pacemaker and device implants, transthoracic and transesophageal echocardiograms, stress testing and interpretations of vascular tests. He has served in many appointed roles in the Department of Cardiology at Beebe Medical Center, Episcopal Heart Institute in Philadelphia, and Cooper Hospital in Camden, NJ. Dr. Sunnergren is board certified by the American Boards of Internal Medicine and Cardiology and a fellow of the American College of Cardiology.

302-645-1233 ext: 2727

G. Robert Myers, MD

Dr. G. Robert Myers joined Cardiovascular Consultants of Southern Delaware as an Interventional Cardiologist on July 7, 2011.  He completed his residency in Internal Medicine and Fellowships in Cardiovascular Disease and Interventional Cardiology at Christiana Hospital. 

Dr. Myers is trained in Nuclear Cardiology and Peripheral Vascular Disease, and is board certified in Echocardiography, Cardiovascular Disease, and Interventional Cardiology.  He graduated Magna Cum Laude from Jefferson Medical College in Philadelphia, and is a native Delawarean, growing up in North Bowers Beach.  Dr. Myers also was a minor league pitcher with the Baltimore Orioles and Minnesota Twins.   Dr. Myers, his wife Alison, and 5 children now reside in Lewes.

For more information about Dr. Myers, please visit

Phone: 302-645-1233 ext: 2730

Ajith J. Kumar, MD

Dr. Ajith Kumar joined Cardiovascular Consultants of Southern Delaware August 2017. Prior to joining Cardiovascular Consultants, Dr. Kumar practiced in Northern Delaware for 16 years.

Dr. Kumar earned his bachelor's degree from Ohio State University and his medical degree from Washington University School of Medicine in St Louis, Mo. He completed his internal medicine residency at Washington University Hospital and his cardiovascular fellowship at the University of Pennsylvania in Philadelphia.

Dr. Kumar is a member of the American College of Physicians, American Medical Association and the American Heart Association.
To schedule an appointment with Dr. Kumar or to contact his staff, please call (302) 645 1233 ext: 2727.

Phone: (302) 645 1233 ext: 2727

Penny Johnson, DNP, CRNP

Penny is a Professional Advanced Practice Nurse Practitioner with 17 years of cardiology experience whom graduated from the University of Alabama with her Doctorate degree in Nursing Practice.  She is seasoned in acute and outpatient cardiac care within interventional and electrophysiology. 

Penny is ACLS/BLS Certified, ANCC Board Certified, Medicare Licensed, also with MD/DE/VA/PA Nurse practitioner Licensure.
To schedule an appointment with Penny, please contact the office at (302) 645 1233 ext: 2713


Phone: (302) 645 1233 ext: 2713

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