William Gionfriddo

William Gionfriddo, MD

Cardiology, Clinical Cardiac Electrophysiology

Provider Groups

  • Trinity Health Of New England Care Alliance

  • Trinity Health Of New England Medical Group

Primary Contact

860-714-7977
Provider Groups
  • Trinity Health Of New England Care Alliance

  • Trinity Health Of New England Medical Group

Primary Contact
860-714-7977

Services & Specialties

Areas of Specialization

  • Cardiology
  • Clinical Cardiac Electrophysiology

Clinical Interests

Conditions Treated

  • Cardiology
  • Clinical Cardiac Electrophysiology
  • Ventricular Tachycardia
  • Cardiac Arrhythmias

About

William Gionfriddo, M.D., is the Associate Chief of Cardiac Electrophysiology with Trinity Health Of New England's Hoffman Heart and Vascular Institute. Dr. Gionfriddo provides excellent care for patients in the field of Cardiac Electrophysiology. He specializes in all aspects of arrhythmia care with a particular focus on ablation of complex atrial and ventricular arrhythmias. Additionally, he is skilled in robotic ablation using Stereotaxis Remote Navigation for ventricular tachycardia management.

Dr. Gionfriddo completed fellowships in Clinical Cardiac Electrophysiology and Cardiovascular Disease and an Internal Medicine Residency at Tufts Medical Center in Boston, Mass. He received his medical degree from the University of Connecticut School of Medicine, where he earned the Carl F. Hinz, Jr. Award for Excellence in Scholars in Medicine and served as the Student Commencement Speaker in 2014.

During Fellowship, Dr. Gionfriddo served on the Tufts Cardiovascular Center Fellows Curriculum Committee and was the Tufts Medical Center Cardiovascular Fellow Liaison to the American Heart Association’s Cardiovascular Fellows Society of Greater Boston. He was also a founding member of the Code Curriculum Committee. He has worked closely with specialists at the Hypertrophic Cardiomyopathy Institute in Boston to prevent adverse arrhythmia outcomes in this population. Proficient in device implantation, Dr. Gionfriddo created a successful physiologic pacing program at Saint Francis. He also facilitated implementation of Pulsed Field Ablation technology.

Dr. Gionfriddo is a member of the American Heart Association, the American College of Cardiology, and the Heart Rhythm Society.

Additional Resources

Education & Certifications

Education

Education:
University of Connecticut School of Medicine (2014)

Residency:
Tufts Medical Center (Internal Medicine) (2017)

Fellowship:
Tufts Medical Center (Cardiovascular Disease) (2020)

Fellowship:
Tufts Medical Center (Cardiac Electrophysiology) (2022)

Board Certifications

Cardiology, American Board of Internal Medicine Subspecialty Cardiovascular Disease (2021)

Clinical Cardiac Electrophysiology, American Board of Internal Medicine Subspecialty Clinical Cardiac Electrophysiology (2023)

American Board of Internal Medicine (2017)

Provider Groups

Trinity Health Of New England Care Alliance

Trinity Health Of New England Medical Group

Provider Ratings

The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn More >

4.9 out of 5

(65 ratings)

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

10 Reviews

10/14/2026

He would be my first recommendation to anyone who needed heart care.

10/12/2026

I recently came under the care of Dr Wm Gionfriddo, MD for chronic arythmia and I saw him once for consultation. I found him to be well trained and experienced regarding my condition. He was thorough and an especially good communicator. I am very satisfied with him and have confidence in him. It is my plan to remain under his care.

10/05/2026

Perfectly explained the diverse issue's

09/28/2026

Dr. Gionfriddo was very thorough, reviewing all tests and spending the time to look at the results and explain everything to me so that it was easily understood.

08/26/2026

Excellent knowledge and kind manner

08/24/2026

Very knowledgeable

08/17/2026

If this hospital is able to retain Dr. Gionfriddo over the span of his career it will be an enormous benefit to the patients served.

08/17/2026

Fabulous Doctor, knowledgeable courteous and informative

08/12/2026

He is very detailed professional

11/19/2025

Solid person
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