Our Cardiologists

Brian Z. Bilchik, MD, FACC

Cardiologist

Brian Z. Bilchik, MD graduated from the University of Witwatersrand Medical School in Johannesburg, South Africa in 1989. He completed his residency training at St. Mary’s Health Center, St. Louis, Missouri, and his fellowship in Cardiovascular Disease at Brigham and Women’s Hospital. Dr. Bilchik is Board Certified in Cardiovascular Disease, Internal Medicine, Echocardiography, and Nuclear Cardiology. Dr. Bilchik focuses on second opinions, coronary disease, valvular heart disease, and arrhythmias. He is passionate about wellness, physical activity, and prevention. He has been involved in national and global research and educational programs. He is an Assistant Professor in Medicine at Harvard Medical School. Dr. Bilchik joined the Lown staff in 1997.

Dr. Bilchik is an avid exerciser; he holds a black belt in karate and plays squash or cycles most days. Exercise is his favorite prescription. Dr. Bilchik's newest passion is kiteboarding.

Jane Bae, MD, FACC

Cardiologist

Jane Bae, MD, is a Massachusetts native who attended Wellesley High School and graduated from MIT. She received her medical degree in 1998 from NYU School of Medicine and completed her internal medicine residency at the University of Michigan and her cardiology fellowship at Boston Medical Center. She is board certified in Cardiovascular Disease, Echocardiography, and Nuclear Cardiology.

Dr. Bae spent more than 22 years at Atrius Health, caring for patients with a wide range of cardiac and vascular conditions. She served as Associate Medical Director of Nuclear Cardiology and built a practice that combined broad clinical expertise with an empathetic approach to care. Consistently rated among the top physicians by her patients, she received the Patient Choice Award, an honor reserved for the top 5% of recommended providers. In addition to her outpatient work, she was an inpatient attending cardiologist at Brigham and Women’s Hospital and Beth Israel Deaconess Medical Center, where she taught Harvard Medical School students and residents for more than two decades.

Dr. Bae’s clinical interests range from preventive cardiology to the management of complex cardiovascular disease. She believes exceptional care begins with listening carefully, helping patients understand their heart health, and partnering with them to develop treatment plans that reflect their goals and lifestyle.

In her free time, Dr. Bae enjoys gardening, cooking Korean food, skiing, and backcountry camping with friends and family.

Charles M. Blatt, MD, FACC

Cardiologist

Charles M. Blatt, MD graduated from the Columbia University College of Physicians and Surgeons in 1978 and completed his residency at Beth Israel Hospital, Boston and his fellowship in Cardiovascular Disease at Brigham and Women’s Hospital. Dr. Blatt is Board Certified in Cardiovascular Disease and Internal Medicine. His clinical work has focused on the management of patients with coronary and valvular heart disease, atrial fibrillation, and the impact of psychological stress upon the heart. He has directed several research projects focusing on the roles of depression and anxiety in coronary artery disease. He is an Assistant Professor of Medicine at Harvard Medical School. Dr. Blatt joined the Lown staff in 1984.

Dr. Blatt is an outdoorsman and enjoys sailing in the summer months and skiing in the winter. He walks daily as part of routine exercise.

Naomi Kenmotsu Rounds, MD

Cardiologist

Naomi Kenmotsu Rounds, MD, graduated from the University of Rochester School of Medicine and completed her Internal Medicine residency and Cardiovascular fellowship at Brigham and Women’s Hospital in 1998. She is Board Certified in Cardiovascular Medicine.

Before joining The Lown Group, Dr. Rounds practiced at South Shore Cardiology for 25 years, serving as Managing Partner and Medical Director. During her tenure, she helped build the practice into the largest single-specialty provider of cardiovascular care on the South Shore.

Dr. Rounds has extensive experience caring for patients with all types of heart disease, including coronary artery disease, valvular heart disease, arrhythmias, heart failure, and preventive cardiovascular management. She believes the best medical care begins with truly understanding each patient — not only their symptoms and medical history, but also the personal, professional, and lifestyle factors that shape their overall well-being. Her approach is collaborative and grounded in evidence-based medicine, with a focus on guiding patients to maintain health, vitality, and purpose throughout every stage of life.

Outside of medicine, she enjoys spending time with her family and staying active through Pilates, walking, and cooking.

Dara Lee Lewis, MD, FACC

Cardiologist

Dara Lee Lewis, MD graduated from Harvard Medical School in 1992. She trained in Internal Medicine and Cardiovascular Disease at Brigham and Women’s Hospital. Prior to joining The Lown Group, she was on the staff of Presbyterian Heart Group in Albuquerque, NM. Dr. Lee Lewis is Board Certified in Cardiovascular Disease, Echocardiography, and Nuclear Cardiology. She is an Assistant Professor of Medicine at Harvard Medical School, and is actively involved in medical education. Her professional interests include cardiac imaging, preventive cardiology, women’s cardiac health, and general cardiology issues including coronary artery disease and valvular heart disease. Dr. Lee Lewis also has a special interest in the management of patients experiencing cardiac symptoms of Lyme disease and POTS (Postural Orthostatic Tachycardia Syndrome).

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Dr. Lee Lewis is a former college coxswain and varsity field hockey player. Now an avid walker and advocate of a healthy and balanced lifestyle, she has a strong interest in the role of nutrition on overall health. In addition, she emphasizes the importance of a healthy lifestyle and non-pharmacologic therapies in the prevention and management of cardiac disease.

Shmuel Ravid, MD, MPH, FACC

Cardiologist

Shmuel Ravid, MD, MPH, received his MD from the Technion – Israel Institute of Technology in 1982 and Master of Public Health from Harvard University. After training in Internal Medicine and Cardiology in Israel, Dr. Ravid completed fellowships in Cardiovascular Disease (Brigham and Women’s Hospital) and Cardiac Electrophysiology (Lahey Clinic/New England Deaconess Hospital). He is Board Certified in Cardiovascular Disease and Internal Medicine. His clinical and research interests include management of cardiac arrhythmias, atrial fibrillation, and long-term outcomes of coronary artery disease. He is an Associate Professor of Medicine at Harvard Medical School.

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Dr. Ravid is a former Director and President of The Lown Group, and has a special interest in rhythm disorders.