Executive Directors

Medical Director

Dr. John  B. Cadigan III, MD FACC

Dr. John Cadigan is an Assistant Clinical Professor of Medicine at Boston University School of Medicine, and is a staff Cardiologist on the arrhythmia consult service at Boston Medical Center.

He graduated summa cum laude and was awarded the title "Scholar of the College" from Boston College. He attended Boston University School of Medicine, and did his training for his internship and residency at Boston City Hospital. His Cardiovascular fellowship was at Boston University Medical Center.

He was Chief of Cardiology and Director of the ICU/CCU at Norwood Hospital for over 10 years, and was President of the Medical Staff from 1998-1999. He became the Chief of Cardiology at the Lemuel Shattuck Hospital, the State of Massachusetts's largest public Hospital from 2003-current.

He has over 25 years of clinical experience in Cardiovascular disease, and has a particular interest in identifying occult heart disease in young adults, with specific aims at preventing sudden cardiac death. He was the athletic team physician for Dedham High School in Massachusetts for 10 years.

In 2015 he testified before the Texas house and senate on a bill considering mandatory ECG screening of young athletes in that state. He is a coauthor of a recent academic paper published in the American Journal of Medicine advocating screening ECG's in athletes and he is recognized both locally and nationally as a champion for widespread ECG screening of our youth in the United States.

Clinical Director

Cynthia Glennon, RN,BSN


Cynthia Glennon received her Bachelor of Science in Nursing from Boston College, Cum Laude in 1991. She has worked in the Department of Pediatrics at Yale New Haven Hospital, Adolescent Unit and Boston Children's Hospital, Cardiac Intensive Care Unit.

Her most recent experience includes working in the School Nurse Office at Hingham Middle School, Hingham, Massachusetts. Cynthia is a member of The National Association of School Nurses, Massachusetts School Nurses Organization and the American Nurses Association.