Mark M. Applefeld, M.D.

Director, The Heart Center at Mercy

Chief, Division of Cardiology

View Additional Leadership Titles
The Heart Center at Mercy

A 2020 Top Doc - Baltimore magazine

Heart Center Board Certified: Specialties: Areas Of Interest: Languages Spoken: Phone: Fax: Locations:

Mark M. Applefeld, M.D., is the Director of The Heart Center at Mercy and Chief of the Department of Cardiology at Mercy Medical Center in Baltimore, Maryland. He and his team at The Heart Center at Mercy specialize in the diagnosis, treatment and prevention of cardiovascular disease.

A Lifelong Dedication to Heart Health

Dr. Mark Applefeld has devoted his entire career to the advancement of cardiac care. He is Board Certified in Cardiology and Internal Medicine and is a Fellow of the American College of Physicians and the American College of Cardiology.

Dr. Applefeld is a former president of the Maryland Chapter of the American Heart Association as well as a member of numerous other professional associations. He has authored numerous publications, participated in editorial review boards and has lectured extensively on subjects pertaining to heart health.

Dr. Applefeld continues his effort to advance his field as a Clinical Professor of Medicine at the University of Maryland School of Medicine.

Serving the Greater Baltimore Area

Dr. Mark Applefeld utilizes his expertise to lead a team of specialized cardiologists seeing patients at several locations throughout the Baltimore region allowing the Center to provide patients comprehensive care when and where it’s convenient for them.

Awards and Recognition

Dr. Applefeld has been named a "Top Doc" by Baltimore magazine in the Cardiology category numerous times.

Education & Fellowships
  • Fellowship - Georgetown University Hospital
  • Residency - University of Maryland Hospital, Department of Medicine
  • Medical Degree - University of Maryland School of Medicine, Cum Laude
Patient Stories
The Heart Center at Mercy


The story of a patient who forms a relationship with Mercy's doctors that spans over 20 years.

Associations & Memberships
  • American College of Cardiology, Fellow
  • American College of Physicians, Fellow
  • Alpha Omega Alpha
  • American College of Physicians
  • American College of Cardiology
  • Maryland Society of Cardiology
Additional Content That Might Interest You