About Leon Ptaszek, MD, PhD

Dr. Ptaszek received his M.D. and Ph.D. degrees from the Mount Sinai School of Medicine. He completed his internal medicine residency training at the Stanford University School of Medicine, and then completed fellowships in cardiology and clinical cardiac electrophysiology at the Massachusetts General Hospital. He is board certified in internal medicine, cardiovascular diseases, and clinical cardiac electrophysiology. Dr. Ptaszek is an Assistant Professor of Medicine at Harvard Medical School and MGH.His clinical interests focus on the management of patients with heart rhythm disorders. Dr. Ptaszek performs catheter ablations of supraventricular tachycardias (SVTs) and premature ventricular contractions (PVCs). He also implants pacemakers, implantable cardioverter defibrillators (ICDs), and cardiac resynchronization therapy (CRT) devices. His research interests include the development of novel ablation catheters and high-resolution arrhythmia mapping systems.

Departments, Centers, & Programs:

Clinical Interests:

Treats:

Locations

Mass General: Demoulas Center for Cardiac Arrhythmias
55 Fruit St.
Boston, MA 02114
Phone: 617-724-4500

Waltham: Mass General Waltham

Mass General Heart Center at Waltham
52 Second Ave.
Suite 570
Waltham, MA 02451
Phone: 781-487-6000

Medical Education

  • MD, Mount Sinai School of Medicine
  • Residency, Stanford University School of Medicine
  • Fellowship, Massachusetts General Hospital

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Reviews: Comments and Ratings

4.8out of 5(449 Ratings, 168 Comments)

March 2025

The staff was great, and Dr. Ptaszek is thorough and takes his time ensuring all questions that I had were answered.


February 2025

My visit was a consultation before a proposed surgical implant. First time with this physician. I was pleasantly surprised with the amount of time, level of detail and depth of questions he answered. This built my confidence in the plan of treatment. Very thorough and clear communications.


February 2025

The staff were very caring and easy to talk to


February 2025

He seems great.


February 2025

This experience was a very good one. The Doctor was caring, listening to my questions and concerns. He was also prompt and on time with my appointment.


February 2025

Great physician.


February 2025

Dr. Ptaszek was knowledgeable, patient, clear and thoughtful in answering all of my questions.


February 2025

Dr. Ptaszek is caring and knowledgeable. He takes the time to listen and respond to my questions. Top notch in my book.


February 2025

I had an excellent experience with the provider in a very complex, what I thought was a very complex procedure. And the provider explained and simplified the procedure in layman's terms, and I was very comfortable with the entire experience.


February 2025

Dr. Ptaszek is consistent with all of my other doctors at MGH. They are all the best in the world and I am so grateful to have them for my care. God bless them all and the MGH staff.

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