Dennis M. Cassidy, MD
Affiliated Physician Member of Bayfront Health St. Petersburg Medical Group

Dennis M. Cassidy, MD - Cardiology - Electrophysiology

Bayfront Health Medical Group Cardiovascular

Address: 601 7th St. South
Ste 205
St. Petersburg, FL 33701

Call: (727) 893-6234

Fax: (727) 893-6111


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Dennis M. Cassidy, MD, is a board-certified clinical cardiac electrophysiologist with Bayfront Health Medical Group Cardiovascular. He specializes in all aspects of the diagnosis and management of patients with electrical abnormalities of the heart.

Dr. Cassidy’s education and early postdoctoral training were in Canada. He received a bachelor’s degree in biology, graduating with honors, from Arcadia University in Wolfville, Nova Scotia, and then earned his medical degree from Memorial University of Newfoundland. He remained at Memorial for an internship in internal medicine before completing his residency in internal medicine at the University of Toronto. He completed his residency in cardiology at Queen's University in Kingston, Ontario. Dr. Cassidy was the recipient of a Canadian Heart Foundation research fellowship which allowed him to complete a three-year fellowship in clinical cardiac electrophysiology at the Hospital of the University of Pennsylvania. He has authored and co-authored several articles in the field of cardiac electrophysiology.

In addition, Dr. Cassidy earned an MBA with a finance concentration from the University of Tampa. His most recent affiliation was with the University of South Florida Morsani School of Medicine, where he directed the inpatient cardiac electrophysiology service at Tampa General Hospital. His passion for teaching was recognized with him being awarded The Guillermo B. Cintron Award for excellence in cardiology teaching.


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