Summary

Dr. Dennis Cassidy is a cardiovascular specialist with 48 years of experience treating heart and vascular conditions. He earned his medical degree from Memorial University of Newfoundland Faculty of Medicine and completed his residency training at the University of Pennsylvania Health System. His extensive experience in cardiovascular medicine has made him a trusted expert in diagnosing and managing complex heart conditions. Dr. Cassidy is fluent in both English and Spanish.

Dr. Cassidy practices at multiple locations throughout Saint Petersburg and Tampa, with hospital affiliations including Orlando Health Bayfront Hospital, Tampa General Hospital, and Saint Joseph's Hospital. He specializes in treating heart rhythm disorders and inappropriate sinus tachycardia. His practice also includes care for patients dealing with weight management concerns that can impact heart health. Dr. Cassidy performs electrocardiograms to evaluate heart function and diagnose cardiac conditions. Patients have given him an average rating of 3.6 out of 5.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.6
  • 48 years of experience
  • speaks English, Spanish
  • University Of Pennsylvania Health System
  • 1 written review
  • 1 specialty
  • 10 areas of expertise
  • 1 board certification
  • 8 hospital affiliations
  • 6 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Dennis Michael Cassidy has 6 locations

Bayfront Health Medical Group Cardiovascular Bayfront Medical Plaza

601 7th St S Ste 205Saint Petersburg, FL 33701
Mon8:00 am - 4:00 pm
Tue8:00 am - 4:00 pm
Wed8:00 am - 4:00 pm
Thu8:00 am - 4:00 pm
Fri8:00 am - 12:00 pm
SatClosed
SunClosed

The Heart Institute

6006 49th St N Ste 200St Petersburg, FL 33709

Saint Anthonys Health Care

1200 7th Ave NSaint Petersburg, FL 33705

Orlando Health Bayfront Hospital

701 6th St SSaint Petersburg, FL 33701

Saint Josephs Hospital Inc

3001 W Dr Martin Luther King Jr BlvdTampa, FL 33607

Dr. Dennis Michael Cassidy

601 7th St S Ste 205Saint Petersburg, FL 33701
Mon8:00 am - 4:00 pm
Tue8:00 am - 4:00 pm
Wed8:00 am - 4:00 pm
Thu8:00 am - 4:00 pm
Fri8:00 am - 12:00 pm
SatClosed
SunClosed

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Dr. Dennis Michael CassidyDr. Dana Weisshaar, MDDr. Raghav Sharma, MDNitza I Alvarez, MD
Cardiovascular DiseaseCardiovascular DiseaseCardiovascular DiseaseCardiovascular Disease
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.6 
4.9 
48 Years of Experience 37 Years of Experience 16 Years of Experience 23 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English, Hindi Speaks English, Spanish
Saint Petersburg , FLCambridge , MAWinter Park , FLLady Lake , FL
Med School: Mem Univ Of Newfoundland Fac Of Med Med School: University of Toledo Medical School Med School: New York Medical College Med School: Universidad Central Del Caribe
Current Profile
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Insurance Plans Accepted by Dr. Dennis Michael Cassidy

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Dennis Michael Cassidy has the following specialty

Specialty Expertise

Dr. Dennis Michael Cassidy has the following 10 areas of expertise

  • Acute Coronary Syndrome (ACS)
  • Cardiac Arrhythmias
  • Cardiac Defibrillator Implant
  • Catheter Ablation
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Holter monitoring
  • Pacemaker Implantation
  • Unstable Angina

Certifications, License, & Education

48 Years Experience

Dr. Dennis Michael Cassidy holds an expired medical license in the state of Florida.

Medical License

Medical Doctor with an expired medical license in the state of Florida that expired in 2026.

Education & Training

Residency

Completed their residency at University Of Pennsylvania Health System.

Medical School

Graduated from Mem Univ Of Newfoundland Fac Of Med in 1978.

NPI Number

Dr. Cassidy's NPI number is 1649272006.

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Frequently Asked Questions

How can I make an appointment with Dr. Dennis Cassidy?
You can find contact information for Dr. Dennis Cassidy here on Vitals.
Is Dr. Dennis Cassidy accepting new patients?
Dr. Dennis Cassidy is accepting new patients on Vitals. View Dr. Dennis Cassidy's profile on Vitals to make an appointment.
Does Dr. Dennis Cassidy accept my insurance?
You can see the insurance plans that Dr. Dennis Cassidy accepts on their Vitals profile.
Which hospitals is Dr. Dennis Cassidy affiliated with?
Dr. Dennis Cassidy is affiliated with Orlando Health Bayfront Hospital, Tampa General Hospital, Saint Josephs Childrens Hospital, Saint Anthonys Health Care, Saint Josephs Hospital Inc, Adventhealth Tampa, Adventhealth Carrollwood, and Saint Josephs Hospital Cancer Institute.
Where is Dr. Dennis Cassidy's office located?
Dr. Dennis Cassidy's office is located at 601 7th St S Ste 205, Saint Petersburg, FL, 33701.

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