Dr. Dennis Cassidy, M.D.
What this data tells you about Dr. Cassidy
Dr. Dennis Cassidy is a clinical cardiac electrophysiology physician in St Petersburg, FL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Cassidy performed 2,543 Medicare services across 1,302 unique beneficiaries.
Between the years covered by Open Payments, Dr. Cassidy received a total of $2,909 from 19 pharmaceutical and/or device companies across 90 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in clinical cardiac electrophysiology physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Cassidy is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Hospital follow-up visit, high complexity | 597 | $95 | $331 |
| Electrocardiogram (EKG), 12-lead | 508 | $11 | $65 |
| Office visit, established patient (30-39 min) | 398 | $94 | $340 |
| Initial hospital admission, high complexity | 162 | $133 | $591 |
| EKG interpretation and report | 139 | $6 | $45 |
| Remote pacemaker/defibrillator monitoring, 90 days | 112 | $17 | $74 |
| Remote pacemaker monitoring, 90 days | 98 | $23 | $100 |
| New patient office visit, complex (60-74 min) | 95 | $164 | $636 |
| Office visit, established patient, complex (40-54 min) | 75 | $136 | $459 |
| Evaluation of cardiac rhythm monitor system, remote up to 30 days | 68 | $19 | $81 |
| Programming of dual lead pacemaker system | 63 | $57 | $188 |
| Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec | 63 | $26 | $108 |
| Heart rhythm review and interpretation of continous external ekg over 8-15 days | 40 | $19 | $80 |
| Heart rhythm recording of continous external ekg over 8-15 days | 35 | $9 | $42 |
| Hospital follow-up visit, moderate complexity | 33 | $64 | $224 |
| Critical care, first 30-74 min | 27 | $173 | $833 |
| Insertion of pacemaker and upper and lower heart chamber electrode | 15 | $411 | $1,676 |
| External shock to heart to regulate heart beat | 15 | $87 | $476 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Cassidy is an electrophysiology & device specialist, with moderate Medicare volume, with low-engagement industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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