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Dr. Dennis M. Cassidy, MD

Cardiovascular Disease

  • (727) 545-3864

Dr. Cassidy's Overview

Dr. Dennis M. Cassidy graduated from the Mem Univ of Newfoundland, Fac of Med, St Johns, Nfld, Canada in 1978. He works in Saint Petersburg, FL and specializes in Cardiovascular Disease and Clinical Cardiac Electrophysiology. Dr. Cassidy is affiliated with Northside Hospital and Saint Petersburg General Hospital.

Dr. Cassidy's Experience

Years in Practice: 37

Dr. Cassidy's Specialties

Cardiovascular Disease, Clinical Cardiac Electrophysiology

Dr. Cassidy's Education & Training

Medical School: Mem Univ of Newfoundland, Fac of Med, St Johns, Nfld, Canada; Graduated 1978

Dr. Cassidy's Rating

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Overall Rating


  • Explains conditions & treatments
  • Takes time to answer my questions
  • Provides follow-up as needed
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Dr. Cassidy's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO
  • CIGNA LocalPlus
  • CIGNA Open Access Plus
  • Coventry Employer Group HMO/Open Access - FL
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Dr. Cassidy's Office Information & Appointments

Office Locations

The Heart Institute

6006 49th St N Ste 200
Saint Petersburg, FL 33709
(727) 545-3864


Office Hours and Information

Fax: (727) 544-7389

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 9:00 AM - 5:00 PM
Tuesday 9:00 AM - 5:00 PM
Wednesday 9:00 AM - 5:00 PM
Thursday 9:00 AM - 5:00 PM
Friday 9:00 AM - 5:00 PM
Saturday Closed
Sunday Closed

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Dr. Cassidy's Hospital Affiliations

Office Locations

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